December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
i Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
GOVERNMENT OF THE REPUBLIC OF KENYA MINISTRY OF ROADS
MATERIAL TESTING AND RESEARCH DEPARTMENT
Technical Proposal
VOLUME I
CONSULTANCY SERVICES FOR:
1. STUDIES ON GEOSYNTHETICS REINFORCED MATERIALS FOR ROAD
EMBANKMENTS AND PAVEMENTS; AND,
2. PERFORMANCE EVALUATION OF REINFORCED EARTH WALLS (RE-
WALLS) ALONG THIKA ROAD (A2)
December 2011
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
ii Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Table of Contents
Chapter 1 Introduction 1.1 Consultant’s Interpretation of Objectives of the Assignment
1.2 Consultant’s Interpretation of Consultancy Services to be provided
1.2.1 Fundamental definition of Performance-Based Design Methodology
1.2.2 Example of Performance-Based Specifications from Consultant’s experience and interpretation
1.3 Mode of achieving Results
1.4 Introduction to Geosynthetics in brief
1.5 Brief Introduction of the European Geogrids Expert Panel (EGEP)
Chapter 2 Appreciation and Interpretation of RFP 2.1 Brief general background of assignment
2.2 Brief description of Projects
2.3 Comments and suggestions on the Terms of Reference (TOR)
2.3.1 Comments
2.3.2 Suggestions that could improve the quality/effectiveness of the assignment
2.3.3 Counterpart staff and facilities
2.4 Standard forms
2.4.1 Form T1: Technical Proposal Submission Form
2.4.2 Form T2: Consultant’s organization and Experience
A. Consultant’s Organization
B. Consultant’s Experience
2.4.3 Form T3: Comments and Suggestions on the TOR
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A. Terms of Reference
B. Counterpart staff and facilities
2.4.4 Form T4: Description of Approach, Methodology and Work Plan for performing the assignment
2.4.5 Form T5: Team composition and Task assignment
2.4.6 Form T6: Curriculum Vitae (CV) for proposed Professional staff
2.4.7 Form T7: Staffing schedule
2.4.8 Form T8: Work schedule
2.4.9 Summary of Technical Proposal Standard Forms
2.5 Appreciation of Contract for Consultancy Services
2.5.1 General
2.5.2 Particular
2.5.3 Obligations of the Client
2.5.3.1 Assistance and exemptions
2.5.3.2 Services and Facilities
2.6 Overview of the Kenya Road Design Manual and the Standard Specifications for Road & Bridge Works
2.6.1 Road Design Manual
2.6.2 Standard Specifications
2.7 Consultant’s Assignment obligations
2.8 Client’s Assignment obligations
2.9 Summary of Changes as Contained in the Tender Notice No. 1
Chapter 3 Consultant’s Corporate Profile and Relevant Experiences 3.1 Brief description of Consultant’s organization
3.2 Outline of recent experience on assignments of a similar nature
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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Chapter 4 Technical Approach and Methodology 4.1 Preamble
4.2 Study Objectives and Approach
4.2.1 Basic analysis
4.2.2 Brief background of Necessity of Consultancy Services
4.2.3 Consultant’s Interlinking Matrix of Approach to Services
4.3 Consultant’s familiarization with the Scope of the Study
4.3.1 Literature review
4.3.2 Condition surveys including structural evaluation on Geosynthetics trial sections constructed in Kenya from 1987 to 2011
4.3.3 Development of Design Procedures, Preliminary Construction Specifications and Quality Control Systems and Recommendation of Appropriate Testing Equipment
4.3.4 Performance Evaluation of RE Retaining Walls along Nairobi ~ Thika Road (A2) and Design of Monitoring Programmes
4.3.5 Development of Special Specifications for Further Trials on Geosynthetically Reinforced Embankments on selected roads in Kenya countrywide
4.3.6 Development of Special Specifications for Further Trials on Geosynthetically Reinforced DBM/AC on selected roads in Kenya countrywide
4.3.7 Development of Monitoring and Evaluation Programmes
4.3.8 Submission of Reports
4.3.9 Organization of Stakeholders Workshops
4.3.10 Preparation of Final Reports
4.4 Overall Technical Approach
4.5 Overall Methodology
4.6 Approach and Methodology to delivery of the Services required
4.6.1 Condition survey and Scoping Inventory
4.6.2 Development of overall Research Philosophy and Regime
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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4.6.3 Proposed field and laboratory Testing Regime
4.6.4 Equipment and Instrumentation
4.6.4.1 Laboratory Equipment
4.6.4.2 Field Measurement Equipment
4.6.4.3 Calibration and Verification of Equipment
4.6.4.4 Innovatively Modified and Fabricated Equipment
4.6.5 Comprehensive Scientific and Engineering Analysis
4.6.6 Methods of Design
4.6.6.1 Geosynthetically Reinforced Pavement Structural Design
4.6.6.2 Geosynthetically Reinforced Embankment and Foundation
4.6.7 Methods of Construction
4.6.8 Quality Control Systems
4.6.9 Example of Development of Preliminary Performance –Based Specifications
4.6.10 Example of Maintenance Procedures Proposed
4.7 Performance Evaluation of Reinforced Earth (RE) Geostructures & Retaining Walls
4.7.1 Evaluation and Monitoring of RE Geostructures
4.7.2 Evaluation and Monitoring of Retaining Walls
4.7.3 Comprehensive Analysis and Characterization of RE-Retaining Walls Interaction
4.7.4 Consultant’s Relevant Experience in Developing Monitoring and Evaluation Systems & Programmes
4.8 Development of Mechanistic-Empirical Design Procedures for Geosynthetically Reinforced Flexible Pavement Structures
4.9 Road Maintenance Procedures for Geosynthetically Reinforced Flexible Pavement Structure
4.10 Consultant’s Relevant Experience in Research Oriented Design for Geosynthetics Reinforced Geo-Structures
4.10.1 Pavement Structural Design Example
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
vi Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.10.2 Embankment and Foundation Design Example
4.11 Consultant’s Relevant Experience in Research Oriented Design for Geosynthetics Reinforced Geo-Structures
4.12 Capacity Building
4.13 Environmental Impact Assessment
Chapter 5 Work Plan 5.1 Basis of Work Plan
5.2 Tasks for required Services of the RFP
5.5.1 Main Task/Work Schedule
5.5.2 Priority of Schedule of Works
5.3 Task Analysis and Management
5.3.1 Task breakdown and Reciprocal Activities
5.3.2 Proposed Tasks Management System
5.4 Mode of Task Implementation
5.5 Main Tasks/ Work schedule
5.6 Implementation Arrangement
5.6.1 Implementation Arrangement by Logistics
5.6.2 Implementation Arrangement by Tasks
5.7 Summary of Deliverables
5.8 Consultants Tool Book
Chapter 6 Organization and Staffing 6.1 Overall Organization Structure of the Consultant
6.2 Proposed Organization Structure for the Assignment
6.3 Composition of Proposed Staff
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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6.4 Summary of Staffing Task assignment
6.5 Proposed Staff Assignment Schedule
Chapter 7 Overview of Key Personnel 7.1 Abridged Curriculum Vitae for Professional Staff
7.2 Abridged Curriculum Vitae for Key Support Staff
Chapter 8 Current Workload
Attachments A1 Vital Documents
A1.1 Certified Copy of Consultant’s Company Certificate of Incorporation
A1.2 Certified Copy of Current Tax Compliance Certificate
A1.3 Current Workload
A1.4 Curriculum Vitae (CV) of Proposed Key Staff
A1.5 Certified Copies of Certificates and Testimonials of Proposed Key Staff
A2 Key Correspondence and Tender Notice No. 1
A2.1 Key Correspondence
A2.2 Tender Notice No.1
A3 Reference Spread Sheets for Some Figures and Tables
A3.1 Figure 4.1 Consultant’s Interlinking Matrix Approach
A3.2 Figure 4.2 Overall Approach and Methodology for Achieving Objectives
A3.3 Table 5.3 Tasks Breakdown, Mode of Implementation and Personnel Tasks Assignment
A3.4 Figure 5.1 Proposed Tasks Management System and Implementation Arrangement
A3.5 Figure 5.3 Implementation Arrangement by Tasks
A3.6 Figure 6.3 Proposed Professional Staff and Support Staff Assignment Schedule
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A4 Example of Method of Geosynthetically Reinforced Pavement Structural Design (4.6.6)
A5 Example of Methods of Construction (4.6.7)
A6 Example of Innovatively Developed Quality Control Procedures (4.6.8)
A7 Example of Performance Monitoring & Evaluation (4.7)
A8 Example of Development of Monitoring and Evaluation Systems and Programmes (4.7.4)
A9 Example of Consultant’s Experience in Design of Geosynthetically Reinforced Geostructures
A10 Capacity Building (4.12)
A11 Environmental Impact (4.12)
A12 Clients Associates and Experience
Volume II Qualifications V-II.1 Curriculum Vitae for Professional Staff
V-II.2 Curriculum Vitae for Key Support Staff
V-II.3 Consultant’s Company Brochure
Volume III Consultant’s Tool Book
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
1 Chapter 1 Introduction | Kensetsu Kaihatsu Limited
Chapter 1 Introduction
1.1 Consultant’s Interpretation of Objectives of the Assignment in General The Study objectives are stipulated under Item 2 of Section 5 of the RFP which addresses the Terms of Reference (TOR).
In general, the Consultant’s interpretation of the main objectives is the Client’s wishes to determine the effectiveness and degree of performance and/or contribution of Geosynthetics in flexible pavements in order to determine its benefits mainly for purposes of developing specifications and guidelines for Design Manuals. In this regard therefore, it is an important objective of this Study to quantify this effectiveness and provide a better understanding of the Geosynthetic mechanisms in pavements and other Geostructures.
In more specific terms, the Consultant has defined the objectives and briefly discussed the necessity of the consulting services required for this Study under Section 4.1 of Chapter 4 of this Technical Proposal under which the Technical Approach and Methodology is presented.
1.2 Consultant’s Interpretation of Consultancy Services to be provided
1.2.1 Fundamental Definition of Performance Based Design Methodology
Performance-Based Design (PBD) fundamentally entails that, deformation in ground, pavement materials and structures soils along with the reciprocal structural deformation and stress states be comprehensively analyzed by adopting sophisticated methods, particularly for structures with high exposure to seismic action.
In performance-based design, the acceptable level of drainage, i.e. the damage criteria, should be specified in engineering terms such as displacements, limit stress state and ductility/ strain limit based on the function as well dynamic loading and/ or seismic response of the structure.
1.2.2 Example of Hypothetically Proposed Performance-Based Specifications from Consultant’s
Experience and Interpretation
Based on the Study objectives, the fundamental definition of Performance-Based Design defined in Sub-Section 1.2.1 and the Consultant’s experience, an example of the ultimate output expected by the Client in terms of Performance-Based Specifications for Geosynthetically reinforced pavements and Geostructures, developed and hypothetically proposed by the Consultant is presented in the following Sub-Sections.
1.2.2.1Example Of Performance Based Properties
I. Definition
The term “performance based” shall mean the contribution of the Geogrid in enhancing the mechanical stability, strength, bearing capacity, deformation resistance, structural capacity, durability, stress distribution characteristics, and secondary consolidation properties of the composite pavement structure that can specifically define its qualitative properties in quantitative terms.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
2 Chapter 1 Introduction | Kensetsu Kaihatsu Limited
II. General
The performance engineering properties of the Geogrids shall be determined based on the scientific and engineering concepts, and methods of testing presented in Attachments 1 and 2 respectively.
The enhancement of the following engineering properties of the pavement structure shall be construed to form the performance based specification of Geogrids in general.
1. Tensile Strength 2. Compressive Strength 3. Modulus of Elasticity 4. Structural Capacity 5. Degree of Interlocking 6. Durability 7. Stress Distribution mode 8. Secondary Consolidation (Creep) rate 9. Reduction of Structural Thickness
1.2.2.2Performance Based Specification (PBS)
I. Strength
I.1 The tensile strength shall be enhanced to a minimum of 9 (Nine) fold of that of the Geomaterial without Geogrid.
I.2 The compressive strength measured from Unconfined Compression Strength (UCS) tests shall
be improved by a minimum of 6 (Six) fold of that of the Geomaterial without Geogrid. I.3 The tensile to compressive strength ratio measured under triaxial conditions shall be a
minimum of 0.02. I.4 The maximum compressive strain at failure measured from Unconfined Compressive Strength
(UCS) tests shall be 2.5%. I.5 The ratio of the lateral stress (minor principal stress) to the axial stress (major principal stress)
shall be 0.25 at failure measured from triaxial conditions.
II. Modulus of Elasticity Parameters
II.1 The elastic stiffness shall be enhanced to a minimum of 1.5 fold that of the Geomaterial without Geogrid.
II.2 The Elastic Limit Strain (ELS) shall be improved by a minimum of 2.5 fold that of the
Geomaterial without Geogrid. II.3 The tensile stress to elastic modulus ratio measured under triaxial conditions shall be a
minimum of 8.5X10-5.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
3 Chapter 1 Introduction | Kensetsu Kaihatsu Limited
II.4 The compressive stress to elastic modulus ratio measured under triaxial conditions shall be a minimum of 4.5⨉10-3.
III. Structural Capacity
III.1 The structural capacity measured from deflection tests shall be enhanced to a minimum of 2.5 fold compared to that of the Geomaterial without Geogrid.
III.2 Structural thickness, measured from dynamic tests, shall be improved by a minimum of 50% in comparison to the non-reinforced composite layer.
III.3 The number of increase in the standard axles over the design life shall be increased by a minimum of 3 fold as simulated from dynamic vibrated loading in comparison to the non-reinforced composite layer.
IV. Degree of Interlocking
IV.1 The degree of interlocking represented by the angle of internal friction of the Geomaterial particles measured from Direct Shear, Triaxial Tests, in-situ dynamic tests (i.e. DCP) or analytically inferred from approved tests and consolidation stress ratio measured from Consolidated Undrained Triaxial Compression (CUTC), shall be enhanced to a minimum of 5 fold of that of the Geomaterial without Geogrid.
V. Durability
V.1 The durability shall be enhanced to a minimum of 1.8 times of the design life of the pavement structure without Geogrid based on prediction adopting the Structural Capacity Depreciation Model (SCDM).
VI. Stress Distribution Mode/Intensity
VI.1 The stress distribution within a Geogrid reinforced (mechanically stabilized) composite pavement structure shall be representative of a pyramid of Geoparticles when measured in 2D at varying locations of the total thickness (t) at layer thickness lt=0.2t over the full model or otherwise actual depth of the pavement layer. In this case, the Geogrid shall be required to enhance the area of stress distribution and/or reduce the stress intensity by a minimum of 5 times within a layer of standardized OBRM GCS Aggregate without any form of chemical stabilization. The Dynamic Cone Penetration Test undertaken in the field is recommended, whilst Direct Shear and UCS shall be applied for model tests.
VII. Secondary Consolidation (Creep) Rate
The rate of secondary consolidation creep of standardized gravel tested under triaxial conditions at a consolidation strain rate of 0.001%/min shall be reduced by a minimum factor of 3 to further enhance the strength by a minimum of 1.5 fold and the deformation resistance (ELS) and secondary yield strain by a minimum factor of 2.5 determined from Consolidated Undrained Triaxial Compression (CUTC) Tests.
1.3 Mode of Achieving Results The technical approach, methodology and work plan proposed and set out to ensure achievement of the stipulated objectives is presented in Chapter 4 and 5 of this Technical Proposal.
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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1.4 Introduction to Geosynthetics in Brief Geosynthetics have been widely used for geotechnical and environmental applications globally for the past four decades. New products and applications are routinely developed globally to provide solutions to routine and critical problems. Over the years, these products have helped Design Engineers to solve various types of engineering challenges where the use of conventional materials would be restricted or considerably more expensive.
There is a significant number of Geosynthetic types and applications, common types of Geosynthetics used for soil reinforcement include geotextiles, Geogrids and Geocells. A wide variety of Geosynthetic products can be used in environmental protection including Geomembranes, Geomats, Geonets, Geocomposites and Geopipes. Geocomposites are Geosynthetics made from a combination of two or more Geosynthetic types. Examples include: geotextile – Geonet; Geotextile – Geogrid; Geonet – Geomembrane; or a Geosynthetic clay line (GCL). Geopipes are perforated or solid-wall polymeric pipes used for drainage of liquids or gas. Geosynthetics are also used to mitigate: erosion, slope failure, poor bearing capacity, etc.
Construction of Geosynthetic-reinforced soil retaining walls (GRS RW’s) and Geosynthetic-reinforced steep slopes of embankments has become popular in Asia (e.g., Japan, Korea, China, Taiwan, Vietnam, Thailand, Singapore, Malaysia and India), following pioneering works in Europe and North America. Among the technologies used to construct these numerous Geosynthetic-reinforced soil structures in Asia, a couple of unique ones that were developed in this region are reported herein.
Fig 1: Geosynthetics commonly used for soil reinforcement (Bathurst 2007)
Fig 2: Schematic view of some typical Geosynthetics used in environmental protection (Bathurst 2007)
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
5 Chapter 2 Appreciation and Interpretation of RFP | Kensetsu Kaihatsu Limited
1.5 Brief Introduction of the European Geogrids Experts Panel (EGEP) The European Geogrids Experts Panel (EGEP) is an association of 12 Elite World renowned researchers
who have been and continue to undertake RISD (Research and Innovation for Sustainable Development) in
Geosynthetics in general and Geogrids in particular.
The Consultant’s proposed Team Leader was the first and only non-European to be included in this Panel.
Chapter 2 Appreciation and Interpretation of RFP
2.1 Brief general background of assignment The Materials Testing and Research Department (MT&RD) of the Ministry of Roads (MoR) aims to procure, vide the RFP, the services of an eligible consultant to work in close consultation towards the “Development Of Construction And Performance Specifications For Geosynthetically Reinforced Road Embankments And Pavement Materials As Well As Performance Evaluation Of Reinforced Earth (RE) [Geo-structures and Retaining] walls along Thika (A2) Road,” with the objective of developing design procedures, construction specifications and quality control systems for Geosynthetically reinforced embankments and pavements as well as design of monitoring programmes for performance evaluation. All undertaken under a research regime tailored towards achieving results that are effectively applicable to detailed analysis that culminates in Performance Based Specifications for Geosynthetics.
2.2 Brief description of Assignment The Consultant shall constitute a Team of four experts as detailed in the Request for Proposal (RFP) and experienced skilled support staff capable of undertaking field activities, coordination of laboratory and field testing, collating and production of reports to work in close consultation with MT&RD under this Study.
The Team shall design and implement the research regime to achieve results that are effectively applicable to detailed analysis to provide Performance Based Specifications for Geosynthetics. The Consultant’s tasks are fully enumerated in Chapter 4, Section 4.3 which illustrates the Consultant’s familiarization with the Scope of the Study.
2.3 Comments and suggestions on the Terms of Reference (TOR)
2.3.1 Comments
Typographical error in the numbering of the TOR items whereby 3 is used twice in repetition and thus the item on Duration of Studies should be number 4 and consequently for the rest of the items ascending.
Capacity building and training should be considered as an integral part of the assignment for purposes of achieving sustainability and enhancing technology transfer.
2.3.2 Suggestions that could Improve the Quality/ Effectiveness of the Assignment
Cost effective evaluation of the use of Geosynthetically reinforced geo-structures
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
6 Chapter 2 Appreciation and Interpretation of RFP | Kensetsu Kaihatsu Limited
Performance comparison of Geosynthetically reinforced earth (RE) [Retaining] walls to traditionally constructed retaining walls under dynamic loads.
Evaluation of hydraulic properties of Geosynthetics
2.3.3 Counterpart staff and facilities
Inventory of facilities including equipment and instruments Calibration status List of personnel by skills Current workload
2.4 Standard forms
2.4.1 Form T1: Technical Proposal Submission Form
The Consultant presents this form as the Covering Letter included with this Technical Proposal attached
after the cover page before the TOC.
2.4.2 Form T2: Consultant’s organization and Experience
A. Consultant’s Organization
A brief background and organization of the Consultant’s organization is presented in Chapter 3
under Section 3.1.
B. Consultant’s Experience
The experience of the Consultant in assignments of a similar nature or relevant to the execution of consulting services similar to the services requested under this assignment (this Study) is detailed in Chapter 3, Section 3.2.
2.4.3 Form T3: Comments and Suggestions on the TOR
A. Terms of Reference
The Terms of Reference have noted under Section 5 of the RFP have been elaborated upon in Chapters 4 to 6, whereas the changes that were incorporated in Tender Notice No. 1 are briefly introduced in Section 2.9 of this Technical Proposal.
Some suggestions were made by the Consultant in his correspondence to the Client dated Monday, 28th November, 2011 of Ref. No. KKL/MOR/MTRD/CE/RFP/TN1/02/10/11
The Consultant intends to make further suggestions on the TOR in close consultation with the Client should he win the tender.
However, the Consultant considers that the information provided in the RFP and the Tender Notice No. 1 is sufficient for the preparation of the Technical and Financial Proposals.
B. Counterpart Staff and Facilities
The Consultant’s interpretation regarding this item is that it will be pursued in detail with the
Consultant who is awarded the Contract.
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
7 Chapter 2 Appreciation and Interpretation of RFP | Kensetsu Kaihatsu Limited
2.4.4 Form T4: Description of Approach, Methodology and Work Plan for performing the
assignment
In preparing his Technical and Financial Proposals, the Consultant has adhered to the stipulations
of this Form T4.
2.4.5 Form T5: Team composition and Task assignment
The Team composition and Task assignments have been compiled in accordance with the stipulations in
this Form and presented in Chapter 6 of this Technical Proposal.
2.4.6 Form T6: Curriculum Vitae (CV) for proposed Professional staff
The Curriculum Vitae presented in Volume II of this Technical Proposal have basically been prepared in accordance with the stipulations of this Form.
2.4.7 Form T7: Staffing schedule
The Staffing Schedule is presented under Section 6.5 of Chapter 6 of this Technical Proposal.
2.4.8 Form T8: Work schedule
The Main Task/Work Schedule prepared based on the format of this Form is presented in sub-section 5.5.1.
2.4.9 Summary of Technical Proposal Standard Forms and Application
Table 2.1 provides a summary of Technical Proposal Standard Forms and the application thereof. Table 2.1 Summary of Technical Proposal Standard Forms and the Application thereof in the Technical
Proposal
S/No. Standard Form Itemization
Description of Form Chapter of Application
Sub-setion
RFP Stipulation
1. T1 Technical Proposal Submission Form
Submission Letter
N/A Upon Submission
2. T2 Consultant’s Organization and Experience
3 T2A – 3.1 T2B – 3.2
2 Pages 20 Pages
3. T3 Comments and Suggestions on TOR and on Counterpart Staff and Facilities to be provided by the Client
2 T3A 2.3.1, 2.3.2, T3B – 2.3.3
4. T4 Approach, Methodology and Work Plan for Performing the Assignment
4 T4(a) – 4.4, 4.5,
4.6, T4(b) –
5, T4(a) - 6
50 Pages
5. T5 Team Composition and Task assignments
6 6.3, 6.4 & 6.5
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
8 Chapter 2 Appreciation and Interpretation of RFP | Kensetsu Kaihatsu Limited
6. T6 CV for Professional Staff 7 7.1 7. T7 Staffing Schedule 6 6.5 8. T8 Work Schedule 5 5.5
Note: The Consultant ensured the application of the Standard Forms accordingly.
2.5 Appreciation of Contract for Consultancy Services
2.5.1 General
The Contract comprises four sections namely: the Form of Contract; the General Conditions of Contract; the Special Conditions of Contract; and the Appendices.
The General Conditions of Contract
① General Provisions ② Commencement, Completion, Modification and Termination of Contract ③ Obligations of the Consultant ④ Consultant’s Personnel ⑤ Obligations of the Client ⑥ Payments to the Consultant ⑦ Settlement of Disputes
2.5.2 Particular
The Special conditions of contract are Amendments of and Supplements to Clause in the General Conditions of Contract and comprises the details of the Client and the Consultant including authorized representatives, the effective date of contract, date of commencement, period, risk coverage, contract amount, payment schedule, account details and payment period.
2.5.3 Obligations of the Client
2.5.3.1 Assistance and exemptions
Clause 5.1 of the General conditions of Contract stipulates that the Client shall use his best efforts to ensure that he provides the Consultant such assistant and exemptions as may be necessary for due performance of this the Contract.
2.5.3.2 Services and Facilities
Clause 5.3 of the General Conditions of Contract stipulates that the Client shall make available to the Consultant the services and facilities listed under Appendix F. however, under Appendix F the services and facilities have not been enumerated.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
9 Chapter 2 Appreciation and Interpretation of RFP | Kensetsu Kaihatsu Limited
2.6 Overview of the Kenya Road Design Manual and the Standard Specifications for
Road & Bridge Works
2.6.1 Road Design Manual
The Road Design Manual under Chapter 4 (Earthworks), Section 4.2 (Embankments), Subsection 4.2.3 Fill material, paragraph 4, suggests that if no other earthwork materials are available then a fully flexible pavement on these embankments will be most suitable. If for reasons of traffic category a pavement incorporating rigid or semi-rigid layers is necessary (asphalt, bituminous macadam, lean concrete, concrete cement, lime stabilized or improved gravels, it is suggested that the problem may be overcome by incorporating a “slippage” layer which will stop the cracks being transferred through the pavement. A suitable “slippage” layer will comprise the placing of a layer of polythene sheeting at the top of the subgrade earthworks, and laying a thin “lower sub-base” of sand or crushed dust, before the sub-base.
Under 5 (Drainage and Erosion Control) Section 5.2 (Drainage of Ground water) Subsection 5.2.2 (Drainage Remedies, b (subsoil drains) paragraph 3 states “if surrounding ground is likely to squeeze or wash into the free-draining material, Filter Protection is required. This can be achieved by placing filter material as free-draining material in the trench.
And further in paragraph 4 of the same section states “it is important that the pipe be surrounded by appropriate filter material to prevent fines from clogging the openings. A non-woven geo-fabric of an approved type may be placed around the draining material to prevent silt or fine particles from being washed into it. It may also be useful to place non-woven geo-fabric around the pipe. The effective pore size of the fabric should comply with filter criteria defined in the same section. Where the flow of water is small and where nonwoven geo-fabric is placed around the draining material, it may be unnecessary to place a pipe.” Under item c of the same section (blanket drains) “Non-woven geo-fabric may also be used to prevent fines from blocking the draining layer. Protection by filter layers or non-woven Geofabric may be required on both sides of the blanket drain.” And in section d (seepage remedies) Geofabrics can also be used.
2.6.2 Standard Specifications for Road and Bridge Construction (1986)
The Standard Specifications for Road and Bridge Construction (1986), under Clause 507 (Rockfill to Swamps) paragraph 2 which states “where instructed by the Engineer, the Contractor shall place a filter fabric (‘terram’ or similar approved) under or around the rockfill. When placing the rockfill onto or in the filter fabric the Contractor shall ensure that the filter fabric is not punctured or damaged in any way. Where the filter fabric is placed around the rockfill the final layer of rockfill shall be blinded with gravel so as to present a smooth surface to receive the filter fabric. The filter fabric shall be installed in accordance with the manufacturer’s instructions.
Where instructed by the Engineer, the Contractor shall first excavate unsuitable material and then place and embed rockfill on and into the underlying material, or a filter fabric if specified by the Engineer.
Clause 517 (measurement and payment) Section K (item: filter fabric under, over or around rockfill defines the unit as m2 of each weight of fabric specified and specifies that; the filter fabric placed under, over or around rockfill shall be measured as the net area of filter fabric instructed. Further, the rate for filter fabric shall include for the cost of preparation of the surface to receive the filter fabric, the provision, transport, storing and laying the fabric in accordance with the manufacturer’s instructions, all
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laps and/or stitching and for complying with Clause 506 (Swamps) and 507 (Rockfill to Swamps) of the same standard specification.
Under Clause 507 (Rockfill to Swamps) paragraph 2 specifies; where instructed by the Engineer, the Contractor shall place a filter fabric (‘Terram’ or similar approved) under or around the rockfill. When placing the rockfill onto or in the filter fabric, the Contractor shall ensure that the filter fabric is not punctured or damaged in anyway, where the filter fabric is placed around the rockfill the final layer of rockfill shall be blinded with gravel so as to present a smooth surface to receive the filter fabric. The filter fabric shall be installed in accordance with the manufacturer’s instructions. Where instructed by the Engineer the Contractor shall first excavate unsuitable material and then place and embed rockfill on and into the underlying material, or on a filter fabric if specified by the Engineer.
2.7 Consultant’s Assignment obligations
① Perform the Services and carry out his obligations with all due diligence, efficiency and economy in accordance with generally accepted professional techniques and practice.
② Observe sound management practices and employ appropriate advanced technology and safe methods.
③ Always act, in respect of any matter relating to the Contract or to the Services, as faithful advisor to the Client and shall at all times support and safeguard the Client’s legitimate interests in any dealing with sub-consultants or third parties.
④ And additionally as stipulated in Sub-clauses 3.2 to 3.7 of the General Conditions of Contract and further in the Special Conditions of Contract.
2.8 Client’s Assignment Obligations
① Clarification and Amendment of the RFP documents ITC 2. ② Receipt and opening of proposals ITC 4. ③ Proposal evaluation including the Technical and Financial Proposals ITC 5. ④ Negotiations, including Financial negotiations ITC 6. ⑤ Award of Contract 7. ⑥ Provide inputs and facilities as per 1.4 of the Data Sheet. ⑦ Provide services as per 6 of the TOR. ⑧ Receipt of the reports as per 7 and 9 of the TOR and 3.6 and 5 of the General Conditions of Contract.
2.9 Summary of Consultant’s Interpretation of Changes as Contained in Tender
Notice No. 1
A summary of the Consultant’s interpretation of changes as contained in Tender Notice No. 1 is
provided in the Attachments to this Technical Proposal.
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Chapter 3 Consultant’s Corporate Profile and Relevant Experiences
3.1 Brief description of Consultant’s organization
3.1.1 Introduction
Kensetsu Kaihatsu Limited (KKL) is an independent International Civil Engineering firm with its Headquarters in Nairobi, Kenya. KKL is a strategic developer / think tank and offers a full range of civil engineering construction with in-house Research & Development, laboratory and consulting services, from project conceptualization to post-implementation, and project contract management to human capacity building. The Firm has been involved in major civil engineering construction and development projects working with leading construction firms under its Department of Construction while providing state-of-the-art innovative Consultancy, Advisory, Technical Assistance to projects as well as being the first African firm to specialize in providing these services in-house to other construction contractors. The firm is proud to be associated with the best construction firms like Kajima Corporation and local/African construction firms including EYAT OILFIELD SERVICES Co. Group: EYAT Roads & Bridges, EYAT Mining & Exploration, EYAT Forwarding in North and Southern Sudan, Kundan Singh Construction and others in Kenya, Ethiopia, South Africa, Uganda, Burundi and Tanzania. KKL fosters high priority on research and on the development of new techniques and technologies that can save and optimize available resources realizing the required tasks economically, timely, and efficiently. KKL’s dedication to uphold professionalism and excellence in all its undertakings confirming the Firm’s leadership in its field and has earned the trust of its clients, thereby establishing a sound international reputation. KKL always receives recommendations and enquiries from governments like GoSS who highly appreciate KKL innovations and Expertise, Agencies like JICA, ERA and KRB.
3.1.2.3 Specific Experience And Contribution Within Region
Kensetsu Kaihatsu Limited (KKL) has vast experience in undertaking various highway and bridge projects in Africa. KKL have expedited their engineering expertise in various countries in Africa for more than 10 years. Having undertaken various projects in numerous developing countries especially South Sudan, KKL have developed appropriate and suitable technologies and pragmatic project management principles that are not only adaptable to the conditions that are prevalent in these countries, but are also versatile in their application. In developing these technological concepts and management principles, KKL appreciates, as a fundamental notion the fact that developing countries particularly in Africa are usually faced with major tasks and challenges that deter socio-economic development. On the other hand, population explosion and rapidly inconsistent and unsustainable development are yet other factors that they have to contend with. Furthermore, Civil Engineering projects in developing countries in this region are usually constrained by lack of sufficient or necessary financial resources and technical capability. Under these circumstances and based on their vast experience within this region therefore, KKC fosters and is dedicated in upholding the following undertakings as their contribution to the development of the countries within this region:
1. Constantly develop innovative engineering concepts, design approach and principles as well technology that is appropriate, VE based and particularly tailored for the conditions and environment that is prevalent within this region.
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2. Introduce consistent but versatile management principles that take into account, the existing constrains, social structure, cultural values and modes of community interactions.
3. Propagate more crucially, investment benefit in terms of time, cost reduction of maintenance requirements and most of all, sustainability for the effective utilization of the meager resources available.
4. Encourage technological transfer right from the grassroots level through on-the-job training and practical capacity and capability building programmes
5. Persistently design and implement Research and Development Programmes that foster sustainable development as the most vital component within the total framework of technological and socioeconomic development that culminates in poverty reduction.
3.1.2.5 Organizational Structure
The organization which has many highly qualified Japanese, African and international Key Staff, is presented here below, while the organizational structure is presented in Chapter 6, sub-section 6.1 and 6.2.
Principals Geotechnical Engineers Foundation Engineers Traffic Engineers Systems Engineers Specification Engineers Tunnel Engineers Railway Specialists Project Management Highways Engineers Soil/Material Engineers Geoscientists Transportation Planners
3 2 2 1 1 1 1 1 2 5 1 1
Economists Construction Specialists Hydrologists Environmental Specialists Social/Poverty Specialists Structural Engineers Geologists Urban/Rural Planners Cost Estimators Surveyors Architects Claims and Arbitration Experts Financial Experts
1 3 1 2 1 4 4 1 1 5 4 1
II.1 Key professional staff
KKC is led by highly qualified engineers and administrators with the two top engineers presented in the attached CVs in the Appendix.
II.2 Clients and Associations
Kensetsu Kaihatsu Limited enjoys a sound reputation and relationship with various Government and International Agencies and has established excellent relationships with many international institutions and foreign government agencies throughout the world.
Kensetsu Kaihatsu Limited has worked in partnership and association with many professional consulting firms in Japan and throughout the world. To assure the optimum state-of-the-art implementation and to introduce the most advanced technologies for many special-nature projects, Kensetsu is proud of these human resources of highly qualified professionals in related specialized fields, such as Railway Systems, Harbours and Marines, Airports, Special Structures, Land Reclamation and Poverty Eradication
KKL associates with worldwide partners to foster research and development initiatives. A lot of R&D has been undertaken in association with world leaders in the field of Soil Mechanics, Geotechnical Engineering and Civil Engineering.
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3.2 Outline of Recent Experience on Assignments of a Similar Nature Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate
Qualifications Project No. 1 (Form 02)
Assignment Name: Country: Kenya
Rehabilitation/ Reconstruction of Gisambai-Mbale Road in Vihiga District
Location within Country:
Mbale/Gisambai, Vihiga County, Western State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management, human capacity building, research and development.
Project Director, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: No. of Staff:
Office of the DPM & Ministry of Local Government, UDD 8 Address: No. of Staff-Months: 22
Jogoo House, Harambee Avenue, Nairobi City Duration of Assignment: 6 months Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$ equiv.):
02-05-2009 30-09-2011 US$ 2.216 Million [KES 168.425 Million] Name of Associated Consultants, if any: None
No. of Months of Professional Staff Provided by Associated Consultants:
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Project Director/CTA/Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Eng. Kabbia Research Engineer: Sirmoi Hydrogeologist: George Amoyo
Design Engineer: Edwin Kanda Systems Analyst/ ICT & Geomatics: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Eng. Maaga
Narrative Description of Project: The Government of Kenya (GOK) through the Office of the Deputy Prome Minister and Ministry of Local Government (MOLG) Urban development Department (UDD) intended to rehabilitate and/or reconstruct the Gisambai to Mbale road in Vihiga County to asphalt grade. The proposed project is located in Vihiga County region in the Western State (Province), about 420Km from Nairobi City. The project was carried out in Gisambai rural and Mbale town. Vihiga (0°18'0"N 34°55'47"E) is located on the eastern side of the Kakamega Forest along the road between Kisumu and Kakamega, and only five kilometres north of the equator. Vihiga District, which is one of the eight districts in Kenya's Western Province. Vihiga municipality has an urban population of 19,000 and metropolitan population of 98,189 (1999 census).
Description of Actual Services Provided by Staff: 1. Engineering Study and undertake Design, formulate and implement Method of Construction and Supervise Construction for the
rehabilitation and/or reconstruction of the road to asphalt 2. The Programme for the Execution of Works included the following as the main items.
1. Materials Procurement Strategy 2. Detailed Labour and Equipment Disbursement Plan 3. Proposed Construction Flow 4. Proposed Construction Procedures 5. Quality Control and Quality Assurance Plan 6. Programme of Works with Superimposed Cash Flow Curve 7. Cash Flow Spread Sheets and Summary of Bills of Quantities 8. Bills of Quantities, as submitted for the Tender, adopted for generating the Cash Flow.
3. Carried out materials investigation, sampling and testing for the road alignment and other suitable material sites for the aggregate sources used in the construction of the road.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
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Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 2 (Form 02) Assignment Name: Country: Kenya
Rehabilitation/ Reconstruction of Selected Roads and Storm Water Drains in Bomet Township and Erection of Street Lighting
Location within Country:
Bomet County, Rift Valley State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management, human capacity building, research and development.
Project Director, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: Office of the DPM & of Local Government, UDD No. of Staff: 8
Address: No. of Staff-Months: 27.3 Jogoo House, Harambee Avenue, Nairobi City Duration of Assignment: 6 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$ equiv.):
02-05-2009 Ongoing US$ 3.522 Million [KES 267.69 Million] Name of Associated Consultants, if any: None
No. of Months of Professional Staff Provided by Associated Consultants:
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Eng. Kabbia Research Engineer: Sirmoi Wekesa Hydrogeologist: George Amoyo
Design Engineer: Edwin Kanda Systems Analyst/ ICT & Geomatics: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Eng. Maaga
Narrative Description of Project: The Ministry of Local Government of the Government of Kenya is mandated to
oversee all Local Authorities (Municipalities, Towns, County Councils and Wards) in
Kenya, Bomet Township being one of them. Its major operation, among others, is
provision of rehabilitating, reconstructing and building of new roads and
infrastructure in general for both existing and new projects. MOLG requires basic
road infrastructure to facilitate efficient delivery of requisite goods and services to
enable it reach out to all. It is against this background that MOLG is implementing
rehabilitation of selected roads and storm water drains in Bomet Township.The
project road is located in Bomet Township and includes the existing road which is
predominantly of 6.2kmsearth surface. Due to prolonged periods of neglect and lack
of maintenance of this important lifeline has resulted in destruction of the road
surface and structures in many sections by the combined effect of vehicular traffic
and uncontrolled storm-water runoff. The contract awarded during this phase covers
the repair of the dilapidated road link encompassing requisite repair /construction
of road drainage structures with a view to enabling all weather passage. The project
is faced with various engineering and physical factors which offer major challenges
to this important road link.
Description of Actual Services Provided by Staff: 1. Engineering Study and undertake Design, formulate and implement Method of Construction and Supervise Construction for the
rehabilitation and/or reconstruction of the road to asphalt. Reviewed comprehensively, the original design documents. 2. Undertook comprehensive site surveys and investigations. 3. Carried out materials investigation, sampling and testing for the road alignment and other suitable material sites for the aggregate sources
used in the construction of the road. 4. Carried out Geomaterials improvement, mechanical and chemical stabilization and testing for all non-compliance materials.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
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Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 3 (Form 02) Assignment Name: Country: Kenya
Reconstruction of Isiolo Airport Runway Pavement
Location within Country:
Isiolo Town, Meru County, Eastern State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management, human capacity building, research and development.
Project Director, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: Kenya Airports Authority No. of Staff: 7
Address: Nairobi No. of Staff-Months: 27.6 , Nairobi City Duration of Assignment: 5months
Start Date: (Day-Month-Year) Oct 2010
Completion Date: (Day-Month-Year) Feb 2011
Approx. Value of Project (in current US$ equiv.): $6.78Million [610KESmillion]
Name of Associated Consultants, if any: None No. of Months of Professional Staff Provided by Associated Consultants:
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Sirmoi Wekesa Contract/Construction Management: Julius Mosaria Hydrogeologist: Kihuha Ng’ang’a
Technologist: Julius Ogalo Systems Analyst/ ICT & Geomatics: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Sirmoi Wekesa
Narrative Description of Project: The Kenya Airports Authority (KAA) under the LASSET (Lamu – Southern Sudan – Ethiopia) Project is undertaking the construction of an international standards airport in Isiolo Town to cater for eco-tourism and transport of goods especially “miraa” (Khat) to neighbouring Somalia Republic and open up the region to trade and investment opportunities in line with Kenya’s Economic Development plan Vision 2030 for Isiolo to become a tourist centre that will include casinos, hotels, upscale retail outlets and transport facilities. LASSET involves the construction of a second port in Lamu, railway link to Ethiopia and Southern Sudan, Airports in Lamu, Isiolo and Lokichoggio and various resorts along the links. Kensetsu Kaihatsu Ltd was contracted as consultants to undertake design review and recommendation thereafter to create the best design possible for the construction of an international VE runway pavement. The existing pavement is completely deteriorated with numerous portholes and the airport is completely in disuse due to its current state. The runway width is less than 15m wide and 1.2km long. The KKL Consultants were commissioned by KAA to carry out a design of the airport pavement facility using the Boeing 737-800 as the design aircraft with provision for future expansion.
Description of Actual Services Provided by Staff: 1. Comprehensive geotechnical engineering analysis and review of the existing design by employing a Value Engineering approach a nd set up
state-of-the-art international standards 2. Carry out pavement design using Boeing 737-800 as the design aircraft. 3. Assess the state of the existing pavement. 4. Study the US Federal Aviation Administration (FAA) Advisory Circular “Airport Pavement Design and Evaluation” AC 150/5320-6D, ICAO
Aerodrome Design Manual, Materials and Specifications, ICAO recommended practices as detailed in Annex 14 Volume 1, and any other relevant documents.
5. Undertake comprehensive Site Surveys and Investigations. 6. Carry out detailed analyses and assessment of the test data obtained from both in-situ and laboratory tests performed in Kenya. 7. Assessment of the laboratory equipment and capability of the same to carry out material acceptance and pavement control testi ng. 8. Carry out material investigation, sampling and testing for the proposed runway. 9. Perform tests on any other suitable material sites for aggregate sources, later to be utilized civil works.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
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Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 4 (Form 02) Assignment Name: Country: Tanzania
Construction of Pavements and Buildings at Songwe Airport in Mbeya, Tanzania - Airport Pavement Design Review
Engineering
Location within Country:
Songwe, Mbeya, Southern-western Tanzania
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management,
human capacity building, research and development.
Team Leader, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: Government of The United Republic of Tanzania - Tanzania Airports Authority (TAA)/ Kundan Singh Construction Ltd No. of Staff: 8
Address: No. of Staff-Months: 35.3 Tanzania National Roads Agency (TANROADS) Duration of Assignment: 8 months
Start Date: (Day-Month-Year) 09/10/2008
Completion Date: (Day-Month-Year) 2009
Approx. Value of Project (in current US$ Equiv.): US$14.3 Million
Name of Associated Consultants, if any: None No. of Months of Professional Staff Provided by Associated Consultants:
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Dr. Anthony Monda Contract/Construction Management: Yasusada Kimura Hydrogeologist: George Amoyo
Technologist: Julius Ogalo Informatics/Geomatics Expert: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Paul Omindo
Narrative Description of Project:
The Tanzania Airport Authority (TAA) received loans from BADEA and the OPEC Fund for the construction of a new airport at Songwe in the Mbeya Region. The Contract for the first phase of the project was signed in July 2004 between the Tanzania Airport Authority and Kundan Singh Construction Company. It comprised the construction of an arrival building, control tower, fire and rescue building, and the construction of a 3.3km runway, access road, car park and apron up to subbase level. The first design was for small aircraft about Fokker 50 standards which was required to be upgraded to a design to cater for an international airport with Boeing 747 as the design aircraft and therefore the Contractor made the engineering judgment to undertake a Detailed Design Review (DDR) of the Songwe Airport Pavement Structure. The consultants, Kensetsu Kaihatsu Limited were commissioned by the Contractor, Kundan Singh Construction Ltd to undertake a comprehensive geotechnical engineering analysis and review of the Existing design by employing a Value Engineering (VE) approach and set up State-of-the-Art International Standards fostering engineering and scientific concepts that can be tailored and applicable in Songwe, Tanzania.
Description of Actual Services Provided by Staff:
1. Review the design using Boeing 747-100 as the design aircraft. 2. Review comprehensively, the Existing Design documents. 3. Study the US Federal Aviation Administration (FAA) Advisory Circular AC 150/5320-6D, ICAO Aerodrome Design Manual,
Materials and Specifications, ICAO recommended practices as detailed in Annex 14 Volume 1, and any other relevant documents.
4. Undertake comprehensive Site Surveys and Investigations. 5. Carry out detailed analyses and assessment of the test data obtained from the tests performed in Tanzania and Kenya. 6. Assessment of the laboratory equipment and capability of the same to carry out material acceptance and pavement control
testing. 7. Carry out material investigation, sampling and testing for the proposed runway, taxiway, apron and access roads alignment. 8. Perform tests on any other suitable material sites for aggregate sources, later to be utilized civil works. 9. Carry out geo-material improvement, mechanical, & chemical stabilization and testing for any non-compliance materials
and/or for purposes of enhancing the engineering properties of the compliant materials. 10. Build capacity in terms of training manpower, and laboratory Technicians on test methods and quality control.
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Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 5 (Form 02) Assignment Name: Comprehensive Geotechnical Investigation Engineering Report for Foundation Design for 4Bridges along R. Nile
Country: Southern Sudan Republic
Location within Country: Juba, Central Equatorial State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management,
human capacity building, research and development.
Team Leader, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: JICA/ CTI Engineering International [JUTI project] No. of Staff: 9
Address: JICA, Juba Town No. of Staff-Months: 37.3 Duration of Assignment: 6 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$ Equiv.):
09-10-2008 2009 US$ 1.2 Million Name of Associated Consultants, if any: None
No. of Months of Professional Staff Provided by Associated Consultants:
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Dr. Anthony Monda Contract/Construction Management: Eng. Kabbia Hydrogeologist: George Amoyo
Design Engineer: Edwin Kanda Materials Technician: Wambugu Informatics/Geomatics Expert: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Justus Otwani
Narrative Description of Project: In response to the request of the Government of Sudan, the Government of Japan (GoJ), through its Implementing Agency, JICA, decided to conduct the “Juba Urban Transport Infrastructure and Capacity Development Study (JUTI) in Juba, Southern Sudan.” JICA selected and dispatched a Study Team of CTI International. Under the Study, it had been established that the undertaking of a Soil (Geotechnical) Investigation Survey, was an important component for purposes of determining suitable and appropriate Basic Design parameters and recommendations for Bridge Foundation Design. Kensetsu Kaihatsu Ltd Consultants were contracted and commissioned by CTI International to undertake to execute Geotechnical Investigation Survey at four Borehole Sites basically as stipulated in the Specifications by carrying out boring and dynamic bearing capacity tests, the analyzed results of which was to be adopted for JUTI. The Scope of Works was to undertake drilling of the four designated boreholes, perform Dynamic Cone Penetration Tests, carry out soil classification at every 1m interval, extrude disturbed samples at every 4m intervals, undertake laboratory testing on the disturbed samples, and comprehensively analyze the test results and compile a Geotechnical Investigation Report that can be pragmatically adopted for a Basic Design.
Description of Actual Services Provided by Staff: 1. Preliminary evaluation and assessment of the four bridge sites. 2. Design of appropriate and suitable testing methods and regimes. 3. Carry out material investigation, sampling and testing for the four bridges. 4. Undertake in-situ tests as set out in the Technical Specifications. 5. Perform laboratory tests on the Geomaterial sampled from the boreholes during drilling at the bridge sites. 6. Carry out Geophysical Survey. 7. Prepare and compile a Geotechnical Investigation Report that can be useful for Basic Bridge Foundation Design purposes. 8. Contribute to Capacity Building of MOTR staff.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
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Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 6 (Form 02) Assignment Name: Country: Tanzania
Mbeya – Lwanjilo Road Rehabilitation Project
Location within Country:
Mbeya, southern western Tanzania
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Civil engineering consulting services, project contract management, human capacity building, research and development.
Team Leader, Deputy Team Leader, Contract/Construction Manager, Hydrogeologist, Informatics/Geomatics expert, Geoscientist, Project
Engineer
Name of Client: No. of Staff:
United Republic of Tanzania 8 Address: No. of Staff-Months: 27.3
Tanzania National Roads Agency (TANROADS) Duration of Assignment: 6 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$ Equiv.):
7-3-2008 On going US$ 16Million [TShs 36.6 Billion] Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John Mukabi Deputy Team Leader: Dr. Anthony Monda Contract/Construction Management: Yasusada Kimura Hydrogeologist: George Amoyo
Technologist: Julius ogalo Informatics/Geomatics Expert: Silvester Kotheki Geoscientist: Joram Okado Project Engineer: Justus Otwani
Narrative Description of Project: As a first for Japan International cooperation Agency (JICA) in hiring a Sub-Consultant directly, Kensetsu Kaihatsu Consultants Ltd (KKL) were contracted to execute The Soil Investigation and geotechnical Engineering works and assist the Consultants, System Science Consultants (SSC) at Multi-Service Training Centre in Juba basically as set out in the Scope of Works and according to the Technical Specifications. The objective of the Preliminary Study was to Evaluate the Appropriateness of Implementation of the Project under the Japanese Grant Aid Scheme. The Project Components are: Construction of Vocational Training Facilities; Provision of Equipment for Vocational Training. The overall objective of the Study was to undertake Geotechnical Investigation at the designated six bore holes sites by carrying out boring and dynamic bearing capacity tests, the analyzed results of which is to be adopted for the JICA Project for Strengthening of Facilities and Equipment for Multi-Service Training Centre in Juba.
Description of Actual Services Provided by Staff: 1. Confirmation of the backgrounds, objectives, contents, Importance and priority of the project in the National Sector Programme as well
as the Specification and Quality of Facilities and equipment expected by MOL 2. Confirmation of the Institutional Capacity of the Implementing Agencies that is necessary for the project execution and Maintenance
from the Technical, Financial and Administrative Aspects. 3. Conduct necessary Field Survey for the Project Site (Topographical Conditions, Soil Conditions, and Drainage Conditions etc.) 4. Study on Local Conditions of Procurement (Consultants, Contractors, Equipment, Materials and Labour), Construction and
Transportation. 5. Study on Rough Cost Estimation of the Project and the Schedule required for implanting Constructing and Procurement. 6. Confirmation of the Financial and Technical assistance for other donors in the Study Area.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
19 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate
Qualifications Project No. 9 (Form 02)
Assignment Name: Country: Sudan
Lainya Jambo Gravel Road Rehabilitation Works
Location within Country:
Southern Sudan
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Highway Engineering, Geotechnical Engineering, Hydrogeology, Pavement and Materials, Structural Engineering, Environmental
Management, Social Science, Economics, ICT and Geomatics, Information Systems, Data Management
Team Leader/ Sr. Highway Engineer, Ass.Team Leader/Sr. Structural Engineer, Sr. Geotechnical Engineer, Sr. Hydrogeologist, Pavement and
Materials Engineer, Environmentalist, Social Scientist, Economist, ICT and Geomatics Expert, Information Systems Expert
Name of Client: No. of Staff:
Payii Roads and Bridges Co. Ltd/ Ministry of Transport and Roads - GoSS
6
Address: No. of Staff-Months: 269 P.O. Box Private Bag, South Sudan Duration of Assignment: 33.2months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
01-11-2007 Ongoing US$10 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
Ministry of Transport and Roads, Government of Southern Sudan. (GOSS).
N/A
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Sr. Geotechnical Engineer: Dr. John N. Mukabi Deputy Team Leader/Sr. Structural Engineer: Dr. Anthony Monda Project Manager: Justus Otwani
Ass.Project Manager: Stephen Ochieno Resident Engineer: Augustino Mawiti ICT Geomatics/Analyst: Silvester Kotheki
Narrative Description of Project: The project involves upgrading the existing 110km road to an all-weather gravel road with a 9m wide carriageway. The Lainya-Jambo road is situated in the Central Equitoria State of Southern Sudan. It starts at Lainya market, some 100km south of Juba-Yei trunk road and proceeds in a North-westerly direction through numerous market centres such as Bereka, Wonduruba, Mangara and Katigiri terminating at Jambo market in the Juba-Mundri trunk road 110km from Lainya. The road transverses rolling to hilly county characterized by numerous seasonal rivers and streams. The Project is due to be completed in December 2008.
Description of Actual Services Provided by Staff: 1. Feasibility Studies 2. Detailed Engineering Design Pavement Structure 3. Engineering Design of Brides and Drainage works comprising of installation of numerous pipe culverts, construction of box culverts,
rehabilitation of several dilapidated bridges and erection of new ones, excavation of catch water and mitre drains, scour protection in form of lined drains, store pitching of embankment side slopes and installation of gabions.
4. Environmental and Social Impact Assessment 5. Construction Supervision
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
20 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 10 (Form 02)
Assignment Name: Country: Burundi
Ntare-Rushatsi Boulevard Project for pavement rehabilitation on city roads.
Location within Country:
Bujumbura, Burundi
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical Engineering, Structural Engineering, Project Management And Contract Administration.
Sr. Geotechnical / pavement and materials engineer, construction engineer expert and structural engineer.
Name of Client: No. of Staff:
Urban Tone Corporation. 3
Address: No. of Staff-Months: 115 Bujumbura, Burundi Duration of Assignment: 12
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
10-10-2007 2008 0.105 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None N/A Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Chief Technical Advisor: Dr John N. Mukabi Deputy Team Leader/ Sr. Structural Engineer: Dr Anthony Monda Contract and Construction Manager: Yasusada Kimura
Narrative Description of Project: The project involved conducting a study in the works of NR 7 rehabilitation (NTARE RUSHATSI Boulevard) A geotechnical investigation study was conducted with materials testing conducted at the National Laboratory of Building and Public Works “L.N.B.T.P” various tests including Dynamic Penetrometer , Granulometric analysis, Atterberg limits, CBR-Proctor and moisture content were analyzed with an aim of determining the samples of Geotechnical characteristics so as to be able to rehabilitate the section.
Description of Actual Services Provided by Staff: 1. Geotechnical study on urban section of Ntare-Rushatsi Boulevard. 2. Design review of pavement structure including concrete kerbing, pitching stonework and protection against erosion, crushed aggregate
Base course, prime and curing membranes, bituminous Base course and asphalt concrete surfacing. 3. Engineering Advisory Services on contract administration and project management. 4. Capacity Building 5. Preparation of final Design and Construction review report.
Letter of Award: Ref. No.: Date:
Letter of Completion: Ref. No.: Date:
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
21 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 11 (Form 02) Assignment Name: Country: Sudan
Emergency Road Repairs in South Sudan-Phase3-Wau-Abyei Trunk Road
Location within Country:
Southern Sudan
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Pavement and Materials Engineering, Bridge engineering, geotechnical engineering, transport economics, Hydrogeological engineering,
environmental managements.
Project Manager/Highway and Geotechnical Engineer, Bride and Hydraulics Engineer, Pavement and Materials Engineer, Structural Designer
Name of Client: No. of Staff:
GOSS, World Food Programme (WFP) 5
Address: No. of Staff-Months: 354.5 Rome, Italy Duration of Assignment: 24months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
10-11-2006 10-07-2008 US$11.7 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
Katahira and Engineers International Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Project Manager/Sr. Highway and Geotechnical Engineer : Dr. John N. Mukabi
Sr. Bridge and Hydraulic Engineer : Yasusada Kimura
Sr. Structural Designer : Dr. Anthony Monda Sr. Pavement and Materials Technologists: Ken Wambugu Sr. Materials Technologists: Julius Ogalo
Narrative Description of Project: The project involved Emergency Road Repair Works in the western corridor of Southern Sudan, with several road links being improved including the Trunk Road from Wau to Abyei (237km). The project road starts at Wau and runs generally in a north-westerly direction through Gogrial, Wunrok, traverses Lol River and ends in Abyei. From Wau It traverses several growing centres including Kuajok and Gogrial. The existing road is predominantly of earth surface. Due to prolonged periods of civil war in Southern Sudan; maintenance of this important lifeline has been neglected resulting in destruction of the road surface and structures in many sections by the combined effect of vehicular traffic and uncontrolled storm-water runoff. This renders the road dangerous and impassable to all kinds of traffic, especially during the rainy seasons. UN-WFP consequently experiences recurrent protracted delays in delivery of relief supplies.
Description of Actual Services Provided by Staff: 1. Assistance in tendering and Bid evaluation. 2. Pavement Structural Design 3. Contract administration and supervision. 4. Construction management and supervision. 5. Project management. 6. Quality assurance and quality control.
7. Facilities operation and maintenance. 8. Human capacity building. 9. Environmental impact assessment. 10. Relocation and resettlement planning. 11. Post project implementation services. 12. Other technical studies/ services
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
22 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 12 (Form 02) Assignment Name: Country: Sudan
White Nile Oil Exploration Project
Location within Country:
Sudd Flood Plains, Jalle, Jonglei State, Southern Sudan
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical engineering, ICT, hydrology, structural engineering, soil
sampling and materials investigation
Geotechnical Engineer, ICT/Geomatics Specialist, Materials Engineer, Hydrogeologist, Structural Engineer
Name of Client: No. of Staff:
White Nile Ltd. 6
Address: No. of Staff-Months: 54.6 Duration of Assignment: 6months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
March 2007 October 2007 USD 30.8Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
BPC Engineering N/A Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Geotechnical Engineer: Dr. John N. Mukabi Structural Engineer: Dr. Anthony Monda ICT/Geomatics Specialist: Mr. Silvester Kotheki
Chief Hydrogeologist: Mr. George Amoyo Technoloists: Julius Ogalo Materials Technician: Mr. Kenneth Wambugu
Narrative Description of Project: The flagship project is the 67,000 sq km Block Ba in Southern Sudan, an area equivalent to approximately 28 UK North Sea blocks or 11 UK North Sea quadrants. The English oil producer White Nile Ltd expects to spud the first exploration well on the Block Ba concession in South Sudan for early in the second quarter of 2007. Having finalised the interpretation of the extensive seismic data over the extension of the Muglad Basin carried out with the full support of the Government of Southern Sudan and the local communities, the Board commenced drilling on Block Ba and assisting in expediting the development of the oil industry in Southern Sudan. The objectives of the study were:
1. To help build a foundation for the sustainable development. 2. To facilitate the construction of pad foundations.
Description of Actual Services Provided by Staff: 1. Analysis of assessment of test data carried out. 2. Assessment of the lab equipment and capability of the same to carry out material acceptance and pavement control testing. 3. Material investigation, sampling and testing for the road alignment and tests on other suitable sites for aggregate sources utilized in the
construction of the access road. 4. Carried out Geomaterial improvement, mechanical and chemical stabilization and testing for all non-compliant materials. 5. Detailed Engineering Design 6. Capacity building in terms of training manpower, lab technicians on testing methods and quality control. 7. Construction Supervision.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
23 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 13 (Form 02) Assignment Name: EYAT Oil Field Country: Republic of Southern Sudan
Location within Country: Juba, Central Equatoria State, Southern Sudan
Areas of Expertise: Geotechnical engineering, ICT, hydrology, structural engineering, soil sampling and materials investigation
Professional Staff Provided by Firm/Entity (Profiles): Geotechnical Engineer, ICT/Geomatics Specialist, Materials Engineer, Hydrogeologist, Structural Engineer
Name of Client: White Nile Ltd. No. of Staff: 5
Address: United Kingdom No. of Staff-Months: 115 Duration of Assignment: 8months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
March 2007 October 2007 USD 160,000 Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
BPC Engineering N/A Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader/Geotechnical Engineer: Dr. John N. Mukabi Structural Engineer: Dr. Anthony Monda ICT/Geomatics Specialist: Mr. Silvester Kotheki
Chief Hydrogeologist: Mr. George Amoyo Materials Engineer: Mr. Kenneth Wambugu
Narrative Description of Project: In response to the Contract between the Government of Southern Sudan (GoSS) through the
Ministry of Transport & Roads (MOTR) and the Contractor EYAT Oilfield Services Company
Limited (EYAT), to carry out the Rehabilitation of Urban Roads: LOT1 under the Emergency
Rehabilitation Works in Juba (ERWJ) Southern Sudan, EYAT under the obligation to
construct superior roads and infrastructure for Southern Sudan engaged the services of
Kensetsu Kaihtsu Limited Consultants (KKLC) to partner with. KKLC selected and dispatched
a Study Team and Engineers with Dr. John MUKABI as the Team Leader. Under the Study and
Preliminary Engineering Evaluation, it has been established that the undertaking of a Review
of the Design for the Road M which is a major and very important road that has been
recommended dual carriageway, was an important component for purposes of determining
suitable and appropriate best Design parameters and recommendations for Road Pavement
Foundation, Drainage and Bridges Design. Kensetsu Kaihatsu Consultants Ltd. (KKC) entered
into a contract with EYAT Oilfield Services Co. Ltd. (EYAT) as In-house Consultants for Civil
Engineering Projects in Southern Sudan w.e.f. 1st November, 2008. On the basis of this
therefore, EYAT directed the involvement and services of KKC on the Project for
Rehabilitation for Juba Town Urban Roads – Lot1.The overall objective of the Study is to
undertake a Design Review of Road M (ref. to Figs. 1.1 & 1.2) by carrying out in-situ and
laboratory tests, comprehensively analyze the results and establish an appropriate and
suitable, cost effective and VE based design that can be adopted for the Rehabilitation of Juba
Town Urban Roads Infrastructure in the Southern Sudan. Specifically, the Study was aimed
at: □1Undertaking a comprehensive geotechnical and materials study of the Road M. □2
Comprehensively reviewing the original design in relation to the soils, materials and
geotechnical aspects. □3Determining the ground bearing capacity, strength and deformation
resistance mainly against the prevalent environmental and geological factors. □4Proposing a
cost-effective Value Engineering (VE) based approach that will realize a sound, and durable
pavement structure that requires minimal maintenance within the Design Life.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
24 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Description of Actual Services Provided by Staff: 1. Review comprehensively, the original design documents.
2. Study the Projects Standard Specifications and any other relevant documents.
3. Undertake comprehensive Site Surveys and Investigations.
4. Analysis and assessment of the test data carried out in Juba.
5. Assessment of the laboratory equipment and capability of the same to carry out material acceptance and pavement control testing.
6. Carry out material investigation, sampling and testing for the 3,090m long Road M alignment.
7. Perform tests on any other suitable material sites for aggregate sources, later to be utilized in the construction of the access road.
8. Carry out geo-material improvement, OPMC stabilization and testing for all problematic and non-compliant materials.
9. Carry out geo-material improvement/replacement testing and analysis for all Problematic materials.
10. Build capacity in terms of training manpower.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
25 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 14 (Form 02) Assignment Name: Country: Sudan
Comprehensive Evaluation of the Engineering Implementation of the Emergency Study on Planning and Support for Basic Physical
and Social Infrastructure in Juba and the surrounding areas in Southern Sudan
Location within Country:
Southern Sudan
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Pavement and Materials Engineering, Bridge engineering, Geotechnical Engineering, Transport Economics, Hydrogeological engineering,
environmental managements.
Project Manager/Highway and Geotechnical Engineer, Bride and Hydraulics Engineer, Pavement and Materials Engineer, Structural Designer
Name of Client: No. of Staff:
Government of Southern Sudan (GOSS)/ Ministry of Transport and Roads (MOTR)
4
Address: No. of Staff-Months: 23.4 Juba, Sudan Duration of Assignment: 13 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
January 2006 March 2007 0.351 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
Sub Consultants for the JV of Katahira and Engineers International, Japan Engineering Consultants and Kokusai Kogyo Company Ltd.
Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Project Manager/Sr. Highway and Geotechnical Engineer : Dr. John N. Mukabi
Sr. Bridge and Hydraulic Engineer : Yasusada Kimura
Sr. Structural Designer : Dr. Anthony Monda Sr. Pavement and Materials Engineer: Ken Wambugu
Narrative Description of Project: The project involved analysis of the present and future conditions and demand in physical and social infrastructure in Juba town and the surrounding areas culminating in a Master Plan from reconstruction/ rehabilitation to development of Juba town and the surrounding areas. Implementation of pilot projects in transport, water supply and community based development sectors were also carried out as an example for the projects. After the Civil War ended, Juba town became the capital of the Southern Sudan, after transfer from Rhumbek in September, 2005. The population of Juba town is estimated at about 250,000 and expected to drastically increase in the future due to accumulation of urban functions as a capital combined with the IDP returnees. Since no investment and/or maintenance of urban infrastructure have been carried out for more than 20 years due to civil wars, most facilities are decrepit and in urgent need for rehabilitation or reconstruction. The general objective of the study is to help build a foundation of the sustainable development of Juba.
Description of Actual Services Provided by Staff: 1. Development plan for Juba town with a target year of 2015 2. Rehabilitation/ development programs of basic physical and social infrastructure 3. Implementation of pilot projects, in transport, water supply and community based development sectors. 4. Proposals for Feasibility studies 5. Proposals for Environment and Social Impact Assessment 6. Evaluation of Road Pavement Structures 7. Evaluation of Bridges and Hydraulic Structures
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
26 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 15 (Form 02) Assignment Name: Country: Kenya
Engineering Study on the performance of Tensor Geogrids with local soils for Kenya Wildlife Service.
Location within Country:
Nairobi National Park
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical investigation, geosynthesis and geotechnology.
Geotechnical Engineer- Team Leader, Sr. Structural Engineer-Deputy Team Leader,
Project Director Contract / Construction Management
Name of Client: No. of Staff:
Kenya Wildlife Service / Tensar International, and Geotechnologies, South Africa
3
Address: No. of Staff-Months: 7.2 372 Rivonia Blvd, Rivonia Code 2128 Johannesburg Duration of Assignment: 2.4 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Services (in current US$):
16/05/2008 On-going 0.0612 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Dr. John Mukabi – Team Leader Dr. Anthony Monda – Deputy Team Leader
Garry Hutt – Design Engineer Chris Jenner – Contract/Construction Management
Narrative Description of Project: The project area is located within the Nairobi National Park, and entailed the upgrading of the access roads to all weather toads which were characterized by failure during the wet season. After initial site investigation/survey and hydrogeological survey by our Research and Technical Team, a Tensar solution incorporating Tensar Geogrid, was determined to be the most cost effective Value Engineering solution.
Description of Actual Services Provided by Staff:
1. Topographic survey 2. Geotechnical investigation 3. Hydrogeological survey/ study 4. Remedial works design 5. Geocell solution
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
27 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 16 (Form 02) Assignment Name: Country: Tanzania
Engineering Study on the Soil Interaction and performance of Geogrids with Tanzanian Soils.
Location within Country:
Mbeya-Lwanjilo-Makongolosi
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical engineering and investigation
Geotechnical Engineer- Team Leader Sr. Structural Engineer-Deputy Team Leader
Projects Engineer Deputy Projects Engineer
Project Director Contract / Construction Management
Name of Client: No. of Staff:
Tensar International, and Geotechnologies, South Africa 6
Address: No. of Staff-Months: 20.8 372 Rivonia Blvd, Rivonia Code 2128 Johannesburg Duration of Assignment: 5.5 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Services (in current US$):
03/05/2008 Ongoing 0.219 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Dr. John Mukabi – Team Leader Dr. Anthony Monda – Deputy Team Leader Eng. Garry Hutt – Projects Engineer
Eng. Mick Park – Deputy Projects Engineer Michael Duckworth – Project Director Chris Jenner – Contract/Construction Management
Narrative Description of Project: The above study was conducted along the Mbeya-Lwanjilo-Makongolosi road which is being upgraded to Bitumen standards by the Govt. of Tanzania through the Ministry of Works (MoW), and the Tanzania National Roads Agency (TANROADS). The Project road is located in Mbeya region in the South Western Highlands about 750Km from Dar-es-Salaam City in Mbeya Rural and Chunya Districts of Tanzania and covers a distance of 115Km long. The altitude ranges between 1200m to 2450m above sea level. The road transverses the highest point of trunk roads in Tanzania, standing at 2450m above sea level and is 18Km from Mbeya Municipality. The main aim of the Project was to determine the interaction of Tanzanian soils with Geogrids, and if they will be viable.
Description of Actual Services Provided by Staff:
1. Topographical Survey 2. Geotechnical Investigation 3. Hydrogeological Survey/ Study 4. Remedial Works Design 5. Geocell Solution. 6. Wrap around steep slope solution.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
28 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 17 (Form 02) Assignment Name: Country: Kenya
Engineering Study on the performance of Tensar Geogrids with local soils for Kisumu Airport expansion project.
Location within Country:
Kisumu
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical investigation, geosynthesis and geotechnology.
Geotechnical Engineer- Team Leader Snr. Structural Engineer-Deputy Team Leader
Projects Engineer Deputy Projects Engineer
Project Director Contract / Construction Management
Name of Client: No. of Staff:
(Kenya Airports Authority)/ Tensar International, and Geotechnologies, South Africa
4
Address: No. of Staff-Months: 12.3 372 Rivonia Blvd, Rivonia Code 2128 Johannesburg Duration of Assignment: 4 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Services (in current US$):
20/04/2008 Ongoing 0.0984 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Dr. John Mukabi – Team Leader Dr. Anthony Monda – Deputy Team Leader Eng. Garry Hutt – Project Engineer
Michael Duckworth – Project Director Chris Jenner – Contract/Construction Management
Narrative Description of Project: The site is located at Kisumu Airport on the shores of Lake Victoria in Western Kenya. Kisumu is located approximately 300Km northwest of Nairobi, on the eastern shore of L. Victoria. The airport is located 5Km to the west of Kisumu town along the Kisumu-Busia road. Currently, the airport handles domestic traffic, mainly through flights by Kenya Airways and East Africa Safaris, which between them operate up to 6 domestic flights per day and serve the western Kenya region, covering Nyanza, Western and Central Rift Valley Provinces. 150,000m2 of Geogrid was needed for the whole Project, which is still ongoing.
Description of Actual Services Provided by Staff: 1. Extension of the runway by approximately 1000m (45,000sqm) and reconstruction of the existing runway (90,000sqm), new
aircraft parking; approximately (40,000sqm). Pavement is both in asphalt concrete (105,00sqm) and Portland cement concrete (70,000sqm).
2. Construction of a new storey building (3,000sqm). The terminal will be equipped with a baggage reclaim belt. Natural ventilation and lighting will be applied to the building.
3. Construction of a new 3,500sqm grade vehicle parking 4. Construction of a new power substation, two guard houses and a toll booth. 5. Installation of air field ground lighting including approach lighting. 6. Construction of drainage works and other associated infrastructures.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
29 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 18 (Form 02) Assignment Name: Country: Kenya
Engineering Study on the performance of Tensar Geogrids with local soils for Mukurweini-Gakonya and Rutune-Mahuani Roads
Project.
Location within Country:
Nyeri/ Murang’a Counties, Central Kenya
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical investigation, geosynthesis and geotechnology.
Geotechnical Engineer- Team Leader Sr. Structural Engineer-Deputy Team Leader
Projects Engineer Deputy Projects Engineer
Project Director Contract / Construction Management
Name of Client: No. of Staff:
(Ministry of Roads) / Tensar International, and Geotechnologies, South Africa
4
Address: No. of Staff-Months: 12.7 372 Rivonia Blvd, Rivonia Code 2128 Johannesburg Duration of Assignment: 6 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Services (in current US$):
2nd February, 2008 On-going 0.118 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
None Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Dr. John Mukabi – Team Leader Dr. Anthony Monda – Deputy Team Leader
George Amoyo – Sr. Hydrogeologist Silvester Kotheki – ICT/Geomatics Specialist
Narrative Description of Project: The Mukurweini-Gakonya road consists of roads D429 and E559 and starts at Mukurweini Market, and ends at Gakonya Junction with Murang’a-Sagana road (C73). This project road transverses in a north easterly direction towards Nyeri town and have a total length of 26Km. Rutune Bridge (Mboiro Bridge) – Mahuani road (E554) transverses in north westerly direction and has a length of 40Km. the total length of the Project Roads is approximately 31Km and located in Murang’a and Nyeri Districts of the Central Province.
Description of Actual Services Provided by Staff:
1. Topographical and Field Surveys 2. Geotechnical Investigations 3. Hydrogeological Survey/ Study 4. Remedial Works Design 5. Geogrid Solution 6. Environmental Impact Assessment
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
30 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 19 (Form 02) Assignment Name: Country: Southern Sudan
Juba River Port Access Road Detailed Engineering and Construction Supervision Design Project
Location within Country:
Juba, Central equatorial State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical engineering, bridge construction, materials investigation
Team Leader, Structural Engineer, Project Manager
Name of Client: No. of Staff:
Urban Tone Corporation 3
Address: No. of Staff-Months: 65.3 Duration of Assignment: 13months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
October-2006 September 2007 0.243 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
Maestro Consultants N/A Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader: Dr. John N. Mukabi Structural Engineer: Dr. Anthony Monda Project Manager: Kenneth Wambugu
Narrative Description of Project: The project involved rehabilitation and reconstruction of the existing road that serves the port of Juba. Emergency study on the planning and support for basic physical and social infrastructure in Juba town and the surrounding areas. Subsequently, a comprehensive engineering report on the study, design study and method of construction of the project road was undertaken, resulting in innovative methods of construction by application of value engineering and state of the art standards, fostering engineering and scientific concepts that were tailored and applicable in S. Sudan. The objectives of the study were:
1. To help build a foundation for the sustainable development of Juba town that’s expected to function as the capital of S. Sudan through enhancing the IDP returnees, accommodating capacity of Juba town.
2. To formulate development plan for Juba town with a target of the year 2015, and, 3. To propose urgent rehabilitation/ development programs of the basic physical and social
infrastructure and to implement pilot projects.
Description of Actual Services Provided by Staff: 1. Analysis of assessment of test data carried out. 2. Assessment of the lab equipment and capability of the same to carry out material acceptance and pavement control testing. 3. Material investigation, sampling and testing for the road alignment and tests on other suitable sites for aggregate sources utilized in the
construction of the access road. 4. Carried out Geomaterial improvement, mechanical and chemical stabilization and testing for all non-compliant materials. 5. Detailed Engineering Design 6. Capacity building in terms of training manpower, lab technicians on testing methods and quality control. 7. Construction Supervision.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
31 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Relevant Services on Assignments of a Similar Nature in the Last Five Years That Best Illustrate Qualifications
Project No. 20 (Form 02) Assignment Name: Country: Southern Sudan
Geotechnical Engineering, Bridge Construction & Materials Investigation
Location within Country:
Juba, Central equatorial State
Areas of Expertise: Professional Staff Provided by Firm/Entity (Profiles):
Geotechnical engineering, bridge construction, materials investigation
Team Leader, Structural Engineer, Project Manager
Name of Client: No. of Staff:
Urban Tone Corporation 3
Address: No. of Staff-Months: 24.5 Duration of Assignment: 6 months
Start Date: (Day-Month-Year)
Completion Date: (Day-Month-Year)
Approx. Value of Project (in current US$):
15-08-2007 20-02-2008 0.36 Million Name of Associated Consultants, if any:
No. of Months of Professional Staff Provided by Associated Consultants:
Maestro Consultants N/A Name of Senior Staff (Project Director/Coordinator, Team Leader) Involved and Functions Performed:
Team Leader: Dr. John N. Mukabi Structural Engineer: Dr. Anthony Monda Project Manager: Kenneth Wambugu
Narrative Description of Project: The project involved rehabilitation and reconstruction of the existing road that serves the port of Juba. Emergency study on the planning and support for basic physical and social infrastructure in Juba town and the surrounding areas. Subsequently, a comprehensive engineering report on the study, design study and method of construction of the project road was undertaken, resulting in innovative methods of construction by application of value engineering and state of the art standards, fostering engineering and scientific concepts that were tailored and applicable in S. Sudan. The objectives of the study were:
4. To help build a foundation for the sustainable development of Juba town that’s expected to function as the capital of S. Sudan through enhancing the IDP returnees, accommodating capacity of Juba town.
5. To formulate development plan for Juba town with a target of the year 2015, and, 6. To propose urgent rehabilitation/ development programs of the basic physical and social
infrastructure and to implement pilot projects.
Description of Actual Services Provided by Staff: 8. Analysis of assessment of test data carried out. 9. Assessment of the lab equipment and capability of the same to carry out material acceptance and pavement control testing. 10. Material investigation, sampling and testing for the road alignment and tests on other suitable sites for aggregate sources utilized in the
construction of the access road. 11. Carried out Geomaterial improvement, mechanical and chemical stabilization and testing for all non-compliant materials. 12. Detailed Engineering Design 13. Capacity building in terms of training manpower, lab technicians on testing methods and quality control. 14. Construction Supervision.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
32 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Chapter 4 Technical Approach and Methodology
4.1 Preamble
The RFP requires that each bidding consultant explains their understanding of the objectives of the assignment, approach to services, methodology for carrying out the activities and obtaining the expected output, and the degree of detail of such output. It further requires the problems being addressed and their importance be distinctly discussed and technical approach to be adopted be explained.
In this chapter, the foregoing requirements of the RFP are introduced and discussed in Section 4.4 in general, while the objectives are analyzed in the subsequent Section 4.2.
On the other hand, the proposed methodologies are presented in Section 4.5 and the correlation and compatibility with the proposed approach, work plan as well as organization and staffing demonstrated therein.
A summary of the RFP requirement for the Technical Approach and Methodology is summarized in the Table below.
Table 4.1 RFP Requirements for Technical Approach and Methodology
RFP Ref.
Breakdown
Particulars Ref. in Technical Proposal
Consultant’s Response/ Remarks
Form T4 ◇1
Understanding of the objectives of the Assignment
1.2 Carried out comprehensive analysis of RFP objectives
Approach to Services Fig.4.1 in Chap 4
Developed Interlinking Matrix
Methodology for carrying out the activities and obtaining the expected output
4.5 ~ 4.6 & Fig.4.10
Methodology systematically based on objectives and correlating Approach, Work-Plan & Organization
Degree of detail of such output 4.6 & Fig.4.1 Detail culminating in output discussed in 4.6 ~ 4.10
Form T4 ◇2
Highlight of the problems being addressed and their importance
Targets highlighted under Section 4.6
Explanation of the Technical Approach adopted to address problems
4.4, 4.6 Provided under Section 4.6 & 1st paragraph of Section 4.4
Explanation of the Methodologies proposed for adoption
4.5 Provided in Section 4.5 & 1st paragraph of Section 4.6
Highlight of the compatibility of the methodologies with the proposed approach
Fig.4.1 Compatibility demonstrated in Fig. 4.1 & Section 4.6 as a whole
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
33 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.2 Study Objectives and Approach
4.2.1 Basic analysis
The objectives of the Study are stipulated under Item 2 of Section 5 of this RFP, which address the Terms of Reference (TOR).
The Study objectives are:-
(i) Development of design procedures, construction specifications and quality control systems for Geosynthetics reinforced embankments and pavements.
(ii) Performance evaluation of RE walls constructed under Nairobi - Thika Project and design of monitoring programmes.
Essentially, according to the Consultant’s interpretation, the RFP requires the design of a research regime that is primarily aimed at developing construction and performance Specifications for Geosynthetics reinforced Geomaterials for road embankments and pavement structures in particular, including design procedures and quality control systems as well as evaluation regimes and procedures for evaluating the performance of existing geo-structures and retaining walls.
From a global perspective the methods of design, construction, quality control systems and performance specifications should ensure that the procedures and techniques are pragmatically applicable and;
1. Cost and time effective predominated with a Value Engineering (VE) component. 2. State of the Art so that they are applicable to inclusion in the Road Design Manual (K) and Standard
Specifications. 3. Are particularly tailored for tropical environmental conditions within the East and Central Africa
Region. 4. Satisfactorily innovative enough to provide a useful basis for developing alternative and more
effective stabilization techniques for Geomaterials, new engineering products, more cost-effective concepts, methods of design and construction techniques which are also environmentally friendly.
5. Provide engineering indicators for quality control, monitoring and evaluation of performance of Geostructures.
4.2.2 Brief background of Necessity of Consultancy Services Comprehensive testing to determine the physical and mechanical index properties of Geogrids such as isotropic stiffness ratio, junction efficiency, radial stiffness (secant modulus), response to various chemicals, temperature effects, torsional rigidity, load transfer capability, and aperture stability modulus have been undertaken. Numerous Case Study Analyses have also been carried out yielding impressive results for a few well manufactured reinforcement Geogrids.
Nevertheless, experimentally based scientific and engineering theories, concepts and principles that delineate the soil particle–Geogrid interaction that would enable the stipulation of a pragmatic Performance Based Specification have yet to be clearly established. As a consequence, it is difficult for the Design Engineer to quantitatively determine the actual contribution and performance of the Geogrid, in terms of initial engineering parameters, within the composite pavement structure. This
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
34 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
makes it impossible for the Design Engineer, Employer/Client and Contractor to compute the actual cost-savings that can be realized as a result of using Geogrids in comparison to other methods of soil improvement/stabilization. Furthermore, hardly any research has been undertaken to establish the progressive interlock mechanism with the increase in degree of compaction/consolidation in relation to the physical nature and configuration of the Geogrid for various Geomaterials.
4.2.3 Consultant’s Interlinking Matrix of Approach to Services
Figure 4.1 Consultant’s Interlinking Matrix Approach to the Provision of RFP Required Services
TaskApproach
1 2 3 4 5 Reference
1.0
1.1 Client Archives Consultant's Archives Local Archives Regional Archives International Archives RFP/ TOR 3 a) I ~ iv
Garsen ~ Lamu Road
(B8/C112) & Garsen Bridge
Upgrading to dual
carriageway of Thika ~
Makutano Road (A2)
Reconstruction of Eldoret ~
Burnt Forest Road (A104)
Reconstruction of Webuye ~
Malaba Road (A104)
Develop Design Procedures Construction Specifications Quality Control Systems Recommendation on
appropriate Testing
Equipment for Geosynthtic
reinforcement
Develop Design Procedures Construction Specifications Quality Control Systems Further Research &
Recommendations on
Testing Equipment
1.4Masalani Bridge Approaches
500 metres
Likoni ~ Shelly Beach
1 km
Kiserian ~ Isinya Road (D523)
1 km
Sigalagala ~ Butere Road
(D260)
1km
RFP/TOR 3.1 d)
1.5 Eldoret ~ Timboroa Road
(A104)
5km
Eldoret ~ Webuye Road
(A104)
5km
Webuye ~ Malaba Road
(A104)
5km
RFP/ TOR 3.1 e)
1.6Masalani Bridge Approaches
500 metres
Likoni ~ Shelly Beach
1 km
Kiserian ~ Isinya Road (D523)
1 km
Sigalagala ~ Butere Road
(D260)
1km
1.7Eldoret ~ Timboroa Road
(A104) - 5km
5km
Eldoret ~ Webuye Road
(A104) - 5km
5km
Webuye~Malaba Road (A104) Sigalagala ~ Butere Road
(D260) - 1km
1km
Inception Report Draft Report Draft Final Report
•Proposed Methodologies
for Study•Detailed Findings Analysis
•Incorporate Comments
from the Engineer
•Detailed Work
Programme for the
Contract
•Results &
Recommendations
All Supporting Material
•4 Copies •4 Copies •4 Copies
2.0
2.1 Client Archives Consultant's Archives Local Archives Regional Archives International Archives RFP/ TOR 3.2 a)
2.2City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) StructuresRFP/ TOR 3.2 b)
2.3City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) StructuresRFP/ TOR 3.2 c)
2.4City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) Structures
RFP/ TOR 3.2 d)
2.5 City Arterial Connectors [Lot1] 3 StructuresMuthaiga Roundabout - Kenyatta University [Lot 2] : Two (2) StructuresKenyatta University - Thika [Lot 3]: Two (2) Structures RFP/ TOR 3.2 e)
Inception Report Draft Report Draft Final Report
•Proposed Methodologies
for Study•Detailed Findings Analysis
•Incorporate Comments
from the Engineer
•Detailed Work
Programme for the
Contract
•Results &
Recommendations
All Supporting Material•4 Copies •4 Copies •4 Copies
Submission of Reports for 2.0 TOR 8 and 9 a ~ d /RFP3.1g2.6 Prepare Final Study Report
1.8 TOR 8 and 9 a ~ d /RFP 3.1g
Workshop for
Stakeholders to Discuss
Draft Final Report
Submission of Reports for 1.0 Prepare Final Study Report
Literature review RE Geostructures
Performance Evaluation of Reinforced Earth (RE) Geo-structures & Retaining Walls along Thika ~ Nairobi Highway (A2)
Studies on Geosynthetically reinforced Materials for road embankments and pavements
RFP/TOR 3.1 c)
RFP/ TOR 3.1 b)
Start
Development of Special Specifications for
Further Trials on Geosynthetically
Reinforced Embankments
Development of Special Specifications for
Further Trials on Geosynthetically
Reinforced DBM/AC
Trial 5 :Findings from 1.4
Trial 6 : Findings from 1.5
Consultation with MTRD and Liason with appropriate Stakeholders
RFP /TOR 3.1 f)
Literature review
Findings from 1.1
Condition surveys1.2
1.3
Findings from 1.2
Examination of Construction
Specifications and Records for RE Walls
Development of Procedures for Testing &
Evaluation of Completed Works,
Settlement on Embankment and Stability
Application of procedures in 2.3 to
Evaluate performance of the RE
Geostructures & Retaining Walls in
relation to the Design Assumptions
Design & Monitoring programme to
inform development of Standard
Construction Speifications
⑥
Structural Evaluation on Geosynthetics Trial sections
Literature review and condition surveys
Thika ~ Nairobi Road (A2)
Geosynthetically Reinforced Embankments
Rehabilitation
Workshop for Stakeholders to
Discuss Draft Final
Report
Reconstruction
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
35 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.3 Consultant’s familiarization with the Scope of the Study
4.3.1 Literature review
The Consultant already has an existing Library with more than 200 publications that are relevant to the requirement of the Consultancy Services as stated in the RFP.
A list of the relevant international publications is provided as Tool 1 of the Consultants Tool Book in Volume III of this Technical Proposal.
4.3.2 Condition Surveys including Structural Evaluation on Geosynthetics Trial Sections
Constructed in Kenya from 1987 to 2011
Trial Sections Using Geogrids: Field Investigation and Observations:
1. Masalani Bridge Approaches:
The Masalani suspension bridge is located on Hola - Masalani Road E873, across the Tana River; 30 km South of Hola Town. The contract was awarded to Associated Construction Co (K) Ltd and supervision was carried out by the Chief Engineer (Roads) for the Ministry of Roads and Public Works.
Photo 1a: Masalani Suspension Bridge
The bridge spans 134m with outer spans of 17m and 25m and a central span of 92m. The carriage way width is 3.7m. The substructure comprises two abutments and two piers in reinforced concrete construction, founded on 600mm diameter concrete bored piles averaging 14m below the pile cap.
The Bridge is approximately 6 Kms from the Hola – Garsen Road [B8]. The bridge is a key link between the Tana River and Ijara Counties. The approach road to the bridge from Hola is an earth road while the approach on the Ijara side is a gravel road. The section from Hola is has a subgrade with predominantly expansive soils and is impassible during the rainy season. The embankments making the approaches are about 4m high in average from either side. The embankments and the foundation of the bridge are protected with gabions.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
36 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Photo 1b: Approach roads to the Masalani Bridge from Hola and the side sections on the embankment:
Photo 1c: Approach road from the Masalani Bridge towards Ijara County, Masalani Town.
Photo 1d: Eroded sections on the Ijara side and the respective gabion protection works.
2. Likoni – Shelly Beach:
The road is located in the Likoni area in Mombasa. It starts at Likoni and runs almost parallel with the sea shore past Kwetu Beach resorts. 1.5 Kms of the road is to bitumen standards while the remaining section is to gravel standards. The area has plenty of coral gravel.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
37 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Photo 2a: Asphalt paved section [Km 0+000 to Km 1+500]; Gravel section & the Coral stones along the road respectively
3. Kiserian – Isinya Road [D523]
This road traverses through Kajiado County commences at Kiserian along the Nairobi – Magadi road [C58] and ends at Isinya along the Namanga – Malaba Road [A104]. The road is 38 Kms and is to bitumen standards and traverses through a rolling and plateau terrain.
Several road defects among them cracking, potholes, edge failure and rutting on the pavement and silting and blockage of the drainage by debris are evident. The alignment soil is predominantly black cotton.
Photo 3a: Section between Km 0+500 showing the black cotton soil and different pavement defects respectively;
4. Sigalagala – Butere Road [D260]
The Sigalagala – Butere Road is part of the Sigagala-Butere-Sidindi Road and is 53km in total. Sigalagala – Butere is 31Km long while Butere – Sidindi is 21Kms. The road is in Kakamega County. It starts at Sigalagala along the Isebania – Nadapal Road [A1] through Musoli, Bukura and ends at Butere along the Ebuyangu – Ekero Road [C31]. The second section starts at Butere and ends at Sidindi.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
38 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Photo 4a: The road at Sigalagala:
5. Timboroa – Eldoret Road (A104)
Timboroa-Eldoret road (A104) is approximately 65.8 Kilometres long. It starts from Timboroa shopping centre at the end of the newly constructed Njoro Turn Off – Timboroa Road and ends at Eldoret town (junction of the road with Eldoret-Iten-Kabarnet road (C51)
The road is characterized with substantial pavement defects with the most prevalent being rutting and potholes.
Photo 5a: KM12+500-KM14+500 section showing rutting defects:
6. Eldoret - Webuye – Malaba Road (A104)
The road is approximately 80Kms and starts from Eldoret town (junction of the road with Eldoret-Iten-Kabarnet road (C51)) and ends at Webuye township. It traverses the Uasin Gishu, Lungari Kakamega and Bungoma Counties.
The section is currently under rehabilitation which is undertaken by Maltauro Construction Co. Ltd. The defects are rutting, potholes, cracking among others: the most affected area is the climbing lane at KM60+000 near Chimoi Market.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
39 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Photo 6a: Part of the pavement sections at KM 60+000 showing rutting defects.
7. Webuye – Malaba Road [A104]:
The section is about 50Kms in length and runs from Webuye town through Kanduyi in Bungoma and ends in Malaba town which borders Uganda. It is currently under rehabilitation undertaken by H. Young & Co Ltd.
The road was constructed between 1990 and 1993 and since then only minor and routine maintenance has been carried out. The most prevalent pavement defects are rutting, potholes and cracking.
During the initial construction in the early ‘90’s, Geogrids were used on trial basis at KM 24+000. The performance of that section in comparison to the rest can be technically stated as superior since there are relatively no signs of defects at that stretch.
At the border, there is lack of parking bays for the transit lorries that ferry goods to Uganda the rest of East and Central African countries like Rwanda, Burundi, South Sudan, DRC Congo. This has resulted in distinct road defects.
Photo 7a: Part of the road section and the Geogrid Trial sections constructed in early ‘90s
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
40 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
8. Thika Highway [A2]:
The Consultant conducted a Site Visit of the Thika Highway on Wednesday, November 30, 2011 in order to
familiarize with the general site conditions and the Geostructures that are identified under item 3.2 (d) of
the TOR in the Tender Notice No. 1.
Some of the representative typical visuals taken during the site visit are presented in the photos below for
each of the three lots stipulated in the TOR.
Photo 8a: Some Perspectives of the Geostructures and Other Details within the City Arterial Connectors
Photo 8b: Some Perspectives of the Geostructures and Other Details Along the Muthaiga Roundabout –
Kenyatta University
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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4.3.3 Development of Design Procedures, Preliminary Construction Specifications and Quality
Control Systems and Recommendation of Appropriate Testing Equipment
This topic is discussed under Section 4.6 of this Technical Proposal. Also refer to Tool 3 to Tool 10 included in Volume III (Consultants Tool Book).
4.3.4 Performance Evaluation of RE Retaining Walls along Nairobi ~ Thika Road (A2) and Design
of Monitoring Programmes
This topic is discussed under Section 4.7 of this Technical Proposal. Also refer to Tool 14 to Tool 17 in Volume III.
4.3.5 Development of Special Specifications for Further Trials on Geosynthetically Reinforced
Embankments on selected roads in Kenya countrywide
This topic is discussed under Section 4.6 in general and an example is presented under Sub-section 4.6.9 of this Technical Proposal. Also refer to Tool 7 in Volume III.
4.3.6 Development of Special Specifications for Further Trials on Geosynthetically Reinforced
DBM/AC on selected roads in Kenya countrywide
The topic is discussed in general under Section 4.6. Particular reference can be made Tool 6 to 11 provided in Volume III of this Technical Proposal.
4.3.7 Development of Monitoring and Evaluation Programmes
This topic is discussed under Section 4.7 of this Technical Proposal. Reference can also be made to Tool 14 through 18 in Volume III.
4.3.8 Submission of Reports
This topic is discussed under Section 5.7 of Chapter 5 of this Technical Proposal.
4.3.9 Organization of Stakeholders Workshops
The topic is presented under Sections 5.2 ~ 5.6 in Chapter 5 of this Technical Proposal.
4.3.10 Preparation of Final Reports
This topic is presented under Section 5.7 and referenced in Section 5.2 to 5.6 of this Technical Proposal.
4.4 Overall Technical Approach The overriding principle of the overall technical approach is to initially establish the appropriate, most effective and optimum methodology to achieve the objectives of the Study based on research oriented scientific and engineering perspectives. Subsequently, the established methodologies are to be managed and administered in a cost-time effective manner. The individual tasks that would provide solutions to the problems associated with the assignment are to be comprehensively analyzed within the framework of the scope of the Study stipulated in the TOR and the critical tasks distinctly identified as demonstrated in Section 5.3 of Chapter 5 of this Technical Proposal. Once the critical tasks are analyzed, effective measures of implementation are presented within the Work Plan.
Consistent and comprehensive monitoring, evaluation, assessment and auditing of the progress, technical, administrative and logistical problems, and bottlenecks that affect efficient and cost-effective delivery of
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
42 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
the assignment is to be undertaken. The methodologies and work plan take into account the organization structure, proposed staff and their capacity to expedite the assignment as shown in Chapter 6 of this Technical Proposal. The approach and methodology to achieve efficient delivery of services required is discussed extensively under Section 4.6.
4.5 Overall Methodology Any engineering exercise involving the development of approximately applicable specifications requires that comprehensive research and testing be undertaken. In this case, the RFP is for Consultancy Services for:
1. Studies on Geosynthetically Reinforced materials for Road Embankments and Pavements; and, 2. Performance Evaluation of Reinforced Earth [Geo-structures and Retaining] Walls (REG-RWs)
along Thika Road (A2).
The Consultant’s derivations based on the analysis of the services required as stipulated above indicate that the objectives of the assignment can only be achieved through innovatively designed research and testing regimes. Consequently, identifying the crucial tasks for this assignment based on the Scope of the Study within the TOR, the Consultant concentrated on deriving the aspects that require innovation and retrospectively developed the methodology and work plan on this basis.
The proposed methodology takes into account the specialized nature of the assignment in compliance with the TOR of the RFP.
The major tasks identified and their reciprocal individual analyses are presented in the subsequent Section 4.6. The tasks analysis is carried out in strict consideration and compliance of the RFP requirement, in general and the TOR stipulations, in particular.
In undertaking the tasks analysis, the Consultant has;
1. Definitively clarified the general and particular considerations in the RFP and TOR respectively. 2. Derived a breakdown of the Scope of Study into specific tasks and subtasks which are given in detail
in Section 5.2 and 5.3 of the Work Plan presented in Chapter 5 of this Technical Proposal (refer to Tables 5.1 and 5.2).
3. Weighted each task accordingly 4. Proposed a Task Management System presented in Sub-section 5.3.2 and schematically depicted in
Figure 5.1
As an integral part of the methodology to achieve the objectives of the Study, a Consultant’s Toolbook is proposed and adopted. A summary of this Toolbook is presented in Table 5.4 under Section 5.8 of this Technical Proposal whereas the Tools are included the Appendices contained in Volume II of the Technical Proposal.
The Consultant adopts these tools and his experience, which he developed through long-term Research and Development (R&D) activities within the East and Central Africa Region, to undertake the following.
1. Generate the relevant and appropriate technical approach and methodology for achieving the requirements of the Consultancy Services.
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
43 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
2. Establish the integral basis of the Study. 3. Propose the example of vital parameters that are paramount for the development of Performance-
based Specifications for Geosynthetics reinforced Geostructures presented in Sub-section 4.6.9. 4. Design the suitable research and testing regimes for the Study (Assignment).
In order to demonstrate the effectiveness of the methodology that is proposed in this Chapter, the Consultant has given an example of their experience in research, study, design and construction aspects of Geosynthetics reinforced geo-structures through two projects that were undertaken in Southern Sudan and Kenya. This is presented in Section 4.11.
On the other hand, the Consultant demonstrates their experience that is relevant to the development of effective performance monitoring and evaluation systems and programmes that can be adopted as a primary basis for the second topic of the RFP.
Based on the foregoing and as presented in Sub-section 4.6.3, the Consultant’s methodology largely concentrates on methods of testing and research approach that can satisfactorily realize the objectives of the Study accordingly.
4.6 Approach and Methodology to delivery of the Services required The overall approach and methodology for achieving the objectives stipulated in the TOR of the RFP is shown in flowchart format in Figure 4.2.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
44 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Figure 4.2 Overall Approach and Methodology for Achieving Objectives
4.6.1 Condition survey and Scoping Inventory
Item 3.1 b) of the Scope of the Study on page 41 of the RFP stipulates that condition surveys including structural evaluation on Geosynthetics stabilized trial sections constructed in Kenya between 1987 and 2011 be undertaken for the following roads.
i. Garsen ~ Lamu Road (B8/C112) & Garsen Bridge ii. Upgrading to dual carriageway of Thika ~ Makutano Road (A2)
iii. Reconstruction of Eldoret ~ Burnt Forest Road (A104) iv. Reconstruction of Webuye ~ Malaba Road (A104)
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
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Having conducted various condition surveys and structural evaluation of pavement structures in East and Central Africa, the Consultant will apply his experience and refer to the approach he developed in designing the appropriate survey and evaluation procedures required for the above roads. The detailed tasks involved for this procedure are presented in Tables 5.1 and 5.2 of Sections 5.2 and 5.3 of Chapter 5 respectively. Refer to Tool 2 included in Appendix V-II.1 of Volume II of this Technical Proposal entitled as follows:
The methodology to be adopted is briefly illustrated in the preceding Figure 4.2, whilst the proposed field and laboratory methods of testing are discussed under Sub-section 4.6.3. This exercise is of extreme importance since it will provide an insight in to the full-scale structural performance of Geosynthetically reinforced pavements.
4.6.2 Development of overall Research Philosophy and Regime
Due to the fact that the Consultancy Services required for this assignment are research oriented, the Consultant considers it a matter of extreme importance that a proper, relevant and appropriate research philosophy and regime be establish and designed respectively.
The Consultant will rely on their vast experience in Research and Innovation for Sustainable Development (RISD), in undertaking this exercise.
In particular, the following Tools, incorporated in this Technical Proposal under Appendix V-III.3 with the following titles:
4.6.3 Proposed field and laboratory Testing Regime
4.6.3.1 Overall Objective of Testing Regime
The testing regime designed as the initial phase of the intended elaborate and comprehensive Research Programme is primarily aimed at achieving results that are effectively applicable to detailed analysis that can provide a formidable basis of determining engineering parameters which would satisfactorily delineate Performance Based Specifications for Geosynthetically reinforced materials for road embankments and pavements.
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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4.6.3.2 Schedule of Tests and Reciprocal Basis
The schedule of standard tests for determining the basic physical and mechanical parameters is tabulated in Table 4.2, while Table 4.3 presents static and dynamic loading tests to be undertaken in both the laboratory and field for purposes of determining geotechnical engineering parameters that can facilitate sophisticated analysis through the application of powerful analytical tools.
Table 4.2 Schedule of Standard Tests determining basic Physical & Mechanical Properties for Soils and
Gravels
Physical/ Mechanical Property
Description of Test Equivalent Standard/ Specification
JIS
Eq
uiv
ale
nt
Sta
nd
ard
/
Sp
eci
fica
tio
n
No
. of
Te
sts
Re
com
me
nd
ed
Remarks
Degree of Moisture-Suction Variation
Moisture Content By oven or microwave drying
method A1203 522
One test per specimen tested of all in both lab and field tests
Plasticity Index Atterberg limits
AASHTO T-89/T-90
A1205/6 37 One test per ten specimens tested using gravels
Plasticity Index Determination of linear shrinkage AASHTO T-91 A1209 37
One test per ten specimens tested using gravels
Density of Particles
Determination of specific gravity of particles AASHTO T-100 A1202 52
One test per ten specimens tested of all in both lab and field tests
Mechanical Stability
Particle size distribution to 0.075mm (dry sieving) AASHTO T-27 A1102 53
One test per ten specimens tested of all in both lab and field tests
Mechanical Stability
Determination of particle size distribution to 0.075mm (wet sieving)
AASHTO T-28 A1103 -
Mechanical Stability
Hydrometer analysis for fine-grained soils
AASHTO T-84 A1202 -
Contamination Organic matter content ASTM-1411 - Contamination Total sulphate content ASTM-C289 - Contamination pH value - Compaction Characteristics
Density-moisture relationship (2.5kg rammer – AASHTO T99)
AASHTO T-99 A1210 -
Compaction Characteristics
Density-moisture relationship (4.5kg rammer – AASHTO T180)
AASHTO T-180 A1211 462 Measured during moulding of all specimens tested in the lab
Bearing Capacity
CBR of specimen statically compacted to 100% MDD & OMC at 4 days soak
AASHTO T-193 A1121 36
One test per ten UCS tests taking various testing conditions into consideration
Bearing Capacity
CBR at 95% MDD (MOD. AASHTO) of specimens dynamically compacted at 3 levels of compaction & OMC at 4 days soak
AASHTO T-194 A1122 -
Density Sand equivalent AASHTO T-176
Density Field density (sand replacement method)
AASHTO T-191 A1214 60
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Table 4.3: Standard Tests for Determining Basic Physical and Mechanical Properties for Aggregate for
OBRM/OPMC Stabilized Geomaterials
Physical/ Mechanical Property
Description of Test
Equivalent Standard/ Specification
JIS
Eq
uiv
ale
nt
Sta
nd
ard
/
Sp
eci
fica
tio
n
No
. of
Te
sts
Re
com
me
nd
ed
Remarks
Mechanical Stability
Determination of particle size distribution to 0.075mm (ISO sieves)
AASHTO T-27 A5001 15 One in every ten tests
Cleanliness Clay, silt and dust in fine or coarse aggregate AASHTO T-112 A1126
15 One in every ten tests
Particle Shape for M.S.
Flakiness index BS812 Part 105 (1989)
A1123 15
One in every ten tests
Degree of Solution Affinity
Relative density and water absorption ASTM D-2049 A1109
15 One in every ten tests
Strength Aggregate crushing value (ACV) BS812 : Part 110 1990
10
One in every fifteen tests
Chemical Characteristics
Soluble chloride content BS812 Part 117 (1988)
10
One in every fifteen tests
Strength Los Angeles Abrasion Value (LAA) AASHTO T-96 A1121
10 One in every fifteen tests
Durability Sodium or magnesium sulphate soundness AASHTO T-104 A122
10
Particle Relative Size for M.S
Average least dimension (ALD) of aggregate
BS812 Part 1 (1975)
15
One in every ten tests
Strength Crushing ratio (CR of aggregate) BS812 Part 110
10 One in every fifteen tests
Particle Density Specific Gravity and Absorption of Coarse Aggregate
AASHTO T-85 A1110
15 One in every ten tests
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Table 4.4 Quantitative Schedule of Tests for Static and Dynamic Laboratory and Field Tests for Sophisticated Analysis for Phase 1
4.6.3.3 Basis and Considerations of tests
I. Basic definition of Performance Based Design
Performance Based Design (PBD) fundamentally entails that, deformation in ground and foundation soils along with reciprocal structural deformation and stress states be comprehensively analyzed by adopting sophisticated methods, particularly for structures with high exposure to seismic activity. In this regard therefore, it is of extreme importance to evaluate the pavement as a composite structure.
Consequently, the testing regime is designed such that the role and degree of contribution by the Geosynthetic in enhancing the mechanical stability, strength, bearing capacity, deformation resistance, structural capacity, durability, stress distribution, stress intensity and secondary consolidation properties of the composite structure, can be measured quantitatively in order to clearly define the qualitative properties. Comprehensive analysis of such data would then enable the pragmatic proposal of Performance Based Specification for Geosynthetics in terms of the minimum qualitative properties required as their contribution in enhancing the geotechnical engineering properties of the composite structure.
3.4.1 3.4.2 3.4.4 3.4.5 3.4.6 3.4.7 3.4.10
Geomaterial
Type
Soaking
Conditions
Mode &
Location of
Imbediment
Cross-section
Variation
Critical State
(Deformed
Geogrids)
Modes of
Loading
Creep
Measurement
No. of
TestsRemarks
Item
No.A 2[①&③] 3[①,②&③] 5[①~⑤] 3[①~③] 0 1[①] 0 90
B 2[①&③] 3[①] 1[②] 3[①~③] 5[①~⑤] 1[①] 0 30
C 1[①] 1[①] 5[①~⑤] 3[①~③] 0 1[①] 0 15
D 1[④] 3[①~③] 5[①~⑤] 3[①~③] 0 1[①] 0 45
E 1[④] 1[①] 1[②] 1[①] 3[①,③&⑤] 1[①] 0 3
183 SubTotal
A 2[①&③] 2[①&③] 3[①~③] 3[①~③] 0 1[①] 0 36
B 2[①&③] 1[①] 1[②] 1[①] 5[①~⑤] 1[①] 0 10
C 1[④] 1[①] 3[①~③] 1[①] 3[①,④&⑤] 1[①] 0 9
D
E
55
A 2[①&③] 1[①] 2[①&②] 3[①~③] 0 1[①] 3[①~③] 36
B 1[②] 1[①] 2[①&②] 1[①] 0 1[①] 3[①~③] 6
C 1[④] 1[①] 2[①&②] 1[①] 0 1[①] 3[①~③] 6
D
E
48
A 2[①&③] 3[①~③] 5[①~⑤] 1[①] 0 1[③] 0 30
B 1[②] 2[①&②] 2[①&②] 1[①] 0 1[③] 0 4
C 1[④] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
D
E
40
A PV Type 1 15
B PV Type 2 10
C PV Type 3 10
D PV Type 4 10
E
45
A 2[①&③] 3[①~③] 5[①~⑤] 1[①] 0 1[③] 0 30
B 1[②] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
C 2[①&③] 1[①] 1[②] 1[①] 0 1[③] 0 6
D 1[④] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
E 2[①&③] 1[①] 2[①&②] 3[①~③] 0 2[③&④] 0 12
60 Subtotal
431 TOTAL
6 Dynamic Loading
Deflection Testing5
4Dynamic Cone
Penetration (DCP)
Reference Subsection
Conditions of Testing→
1
Unconfined
Compression Strength
(UCS)
Consolidated
Undrained Triaxial
Compression (CUTC)
3
2 Direct Shear
Test Description
N/A
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II. Particular Considerations in Relation to Soil-Geogrid Interaction
In particular, the following fundamental considerations were made in order to determine the scientific and engineering basis for the soil-Geosynthetic interaction in relation to the role and degree of contribution of the Geosynthetic within the pavement structure; which would, as a result, define its qualitative properties and vital physical and mechanical features.
1. Mechanical function of the grid structure characterized by the strength of the junctions and stiffness of the ribs as essential features in the interlock mechanism.
2. Correlation between effective mechanical interlock and; a. strength and rigidity of junctions b. efficiency of junctions c. thickness of ribs d. geometry of aperture
3. Correlation between degree of interlock and magnitude of lateral movement, constraining stress, and dilation of aggregate particles.
4. Effect of strength and rigidity of junctions, thickness of ribs and geometry of Geosynthetic in the mobilization of the effective angle of shearing resistance and confining stress.
5. Degree of contribution of the combined Geosynthetic features in Geosynthetic reinforced layers in relation to, a) tensile load magnitude b) magnitude of impacted deflections c) magnitude of strain under working load d) extent of reinforcement benefit e) eccentricity of loaded area and load concentration in relation to point of loading f) degree and rate of bonding between Geogrid and Geomaterial g) rate and degree of tensioning under loading as a function of deformation resistance h) rate and degree of rutting under loading as a function of deformation resistance i) stress distribution j) stress intensity k) direction of lateral stress concentration l) degree of enhanced performance of composite pavement structure m) magnitude and effects of pre-straining/pre-stressing n) effective structural thickness of the composite pavement structure o) vibrational mode and intensity p) axis of vibration in a 3D plane
6. Strength and Deformation characteristics under Critical State conditions will be studied in reference to: a) Exposure in extremely harsh conditions with drastic temperature variations –
heating/freezing. b) Direct loading by construction equipment during pavement structural rehabilitation
causing some damage to the Geosynthetic i.e. deformed ribs, punched nodes and twisted Geosynthetic geometry (torsional).
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c) Exposure to chemically aggressive environments d) Direct vibrational dynamic loading e) Use of recycled Geosynthetics
4.6.3.4 Summary of Conditions of Testing
I. Geomaterials to be adopted
The Geomaterials to be adopted for this testing regime shall be MS standardized applying the OBRM in order to ensure uniformity, homogeneity, consistency and exhibition of fairly similar intrinsic physical and mechanical characteristics in order to contain the error factor within reasonable and acceptable tolerances. The tolerances shall be within the following Boundary Limits (BL).
1. Physical Parameters – ±5% 2. Chemical Parameters – ±3% 3. Bearing Capacity Parameters – ±7% 4. Compressive Strength Parameters – ±7% 5. Shear Strength Parameters – ±7% 6. Deformation Resistance Parameters – ±10% 7. Modulus of deformation Parameters – ±10%
The grading characteristics determined from sieve analysis and evaluated adopting the OPMC Model shall have an Upper Boundary Limit (UBL) of +10% and a Lower Boundary Limit (LBL) of -10% as shown in Fig. 3.1.
Fig. 4.3 Upper and Lower Boundary Limits for Acceptable Tolerances of Sieve Analysis
The materials to be adopted shall be as follows:
① OBRM Gravel ② OBRM Sandy Gravel ③ OBRM Level 10 GCS ④ OPMC Level 10 GCS
Part
icle
Siz
e D
istr
ibut
ion
Cummulative % Passing Sieve
Maximum UBL CurveMinimum LBL CurveIdeal Curve
Zone of Acceptable Tolerances
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The batching ratios shall be determined in accordance with geo-particle qualities and Geomaterial characteristics adopting the OPMC Model.
OBRM Level 10 GCS - Mode of Optimum Batching of Geomaterials
I. Optimum particle size ratios for Nominal Maximum Particle Size BS Sieve (mm)
50 37.5 20 10 5 2.36 0.425 0.075
% Passing (Opt)
100 90 70 55 40 30 18 10
Sequential No.
⓪ ① ② ③ ④ ⑤ ⑥ ⑦
II. Mode of Optimum Batching – Six Stage Batching
III. Sieve Sieving and Batching by Pulverization
IV. Outline of Procedure
37.5mm Sieve
20mm Sieve
0.075mm Sieve
⓪
①
⑦
②
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II. Soaking Conditions for OBRM Specimens
Basically two conditions of soaking shall be adopted namely; Soaked and Unsoaked. However, in order to simulate characteristics of partially saturated pavement structures, which would be the case in most areas, some partially soaked specimens will be tested as well.
① Soaked specimen : Tested after 4 days soak whereby the specimen shall be fully immersed in temperature controlled water at 20~25°C
② Unsoaked specimen : Tested within 10 minutes of molding.
③ Partially-soaked specimen
: In this case various specimens shall be soaked until they attain 25%, 50%, or 75% Degree of Saturation. In order to determine the Degree of Saturation as accurately as possible, trials will be made to determine the appropriate soaking period for each saturation level and varying material as schematically depicted in Figure 4.4. The weight of each representative specimen for every varying material shall be measured at designated time intervals and the degree of saturation computed there from in percentage.
Figure 4.4 Schematic representation of Degree of Saturation vs. Soaking Period
Degr
ee of
Satu
ratio
n, Sr
(%)
Soaking Period (minutes)
Triaxial Characteristic Curve
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III. Curing and Soaking Conditions for OPMC Specimens
For OPMC specimens, the curing and soaking, which shall be performed under quasi-constant temperatures of 20~25°C, shall be conducted as follows.
① Soaked specimen : The specimen shall be tested after:- 1 day cure + 1 day soak 3 days cure + 3 days soak 7 days cure + 7 days soak 14 days cure + 14 days soak 28 days cure + 28 days soak
② Unsoaked specimen : The specimen shall be tested after 60 minutes of molding without curing or soaking
③ Partially-soaked specimen
: The method stipulated in 4.6.3.4 I and II shall be applied prior to testing after the respective curing periods.
IV. Mode and Location of Embedment of Geosynthetic
The process and location of imbedding the Geosynthetics is schematically depicted in Figure 4.5.
Figure 4.5 Schematic depiction of Geosynthetic Imbedding process and locations.
V. Geogrid Cross-section Variations
Three different Geogrid cross-sections will be adopted in this study. The schematic cross-sections are represented in Figure 4.6.
Figure 4.6 Geogrid cross-section variations
① Full Area Cross-section ② Circumferential Cross-section ③ Centroid Cross-section
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VI. Simulation of Critical State of Geogrids
Simulation of the performance of Geogrids when subjected to critical state conditions such as damage caused by harsh climatic and environmental conditions, subsurface chemicals, construction traffic, deformed ribs, punched nodes and twisted geometry will also be performed on a number of specimens from various tests. Examples of the schematics of the deformed Geogrids are shown in Figure 4.7.
Figure 4.7 Example of Schematic Representation of deformed Geogrids
VII. Modes of Loading
Two main modes of loading will be applied; static and dynamic. The static loading will predominantly be monotonic for both the UCS and CUTC tests whilst the dynamic loading will be vibrational in the laboratory applying a 750w loading rate and 66N vibrating hammer weight that provides 2800 impacts per minute and satisfies BS1377 and BS1924 Standards. For in-situ testing, the TRL Dynamic Cone Penetration (DCP) and the Benkelman Beam Deflection Testing shall be adopted.
For both modes of loading (static and dynamic), continuous single loading and multiple stage loading shall be employed. Multiple loading stages shall be employed in synchronization with the number of Geogrid embedment depicted in subsection 4.6.3.4 IV and as depicted in Figure 4.8.
Figure 4.8 Mode of Multi-Stage Loading
0GG
1GG
2GG
3GG
4GG
Mo
de
of G
eo
grid
(GG
) Im
be
dim
en
t (N
o.)
No. of Loading Cycles (Vibrations)
Loading Time, t (minutes)0.1 1 10 100 1000 10,000 1 10 100 1000 10,000
2,800 28,000 280,000 2,800,000 28,000,000 2,800,000 28,000,000280,00028,000
Loading
Reloading
Unloading12hrs
t
αtf:Stages of Rebound Measurement
Mu
lti-
Stag
e Lo
adin
g
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① Static Continuous : Adopted for UCS monotonic loading whereby the specimen is compressed continuously to failure.
② Static Multi-Stage : Adopted for UCS monotonic loading whereby the specimen is loaded and then unloaded for 12hrs (720 minutes) at each
stage; 0
ft , 1
ft , 2
ft , 3
ft and 4
ft indicated in Figure 4.8
and then reloaded to the subsequent stage to failure ③ Dynamic Continuous : Adopted for vibrational dynamic loading whereby the
specimen is dynamically loaded continuously to failure. ④ Dynamic Multi-Stage : Adopted for vibrational dynamic loading whereby the
specimen is dynamically loaded and then unloaded for 12hrs
(720mins) at each stage; 0
ft , 1
ft , 2
ft , 3
ft and 4
ft
indicated in Fig. 3.12 and then reloaded to the subsequent stage to failure
⑤ Static/Dynamic Continuous
: Adopted for UCS monotonic loading whereby the specimen is compressed statically, allowed to rebound for 12hrs (720mins) and then reloaded under vibrational dynamic loading whereby the specimen is dynamically loaded continuously to failure.
⑥ Static/Dynamic Multi-Stage
: Adopted for UCS monotonic loading whereby the specimen is loaded and then unloaded for 12hrs (720 minutes) at each
stage; 0
ft , 1
ft , 2
ft , 3
ft and 4
ft indicated in Figure 4.8
and then reloaded to the subsequent statically and a similar procedure is replicated at each stage under vibrational dynamic loading whereby the specimen is dynamically loaded and then unloaded for 12hrs (720mins) at each stage;
0
ft , 1
ft , 2
ft , 3
ft and 4
ft indicated in Figure 4.8 and
then reloaded to the subsequent interchanging stages to failure.
VIII. Axial and Lateral Deformation Measurement
For all the statically and dynamically loaded specimens, the strain measurements will be performed in three-dimension (3D) in X, Y and Z directions as depicted in Figure 4.9 Trials shall be undertaken to determine the appropriate mode and level of strain measurement.
Figure 4.9 Mode of measuring Axial and Lateral strains
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① Strain measurement during Continuous Static loading
Table 4.5 Strain measurement during Continuous Static loading Loading Steps 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Axial Strain (mm)
0.01 0.02 0.04 0.06 0.1 0.15 0.2 - - - - - - - Failure
Lateral Strain (mm)
X - - - - - - - - - - - - -
Z - - - - - - - - - - - - -
: Measure lateral strain prior to loading and at Failure
② Strain measurement during Multi-stage Static loading
Table 4.6 Strain measurement during Multi-stage Static loading 0
c - 1
c - 2
c - 3
c - 4
c
Loading Steps Loading Unloading Loading Unloading Loading Unloading Loading Unloading Loading
10 X 21 XX
(12hrs) 32 XX
43 XX
(12hrs) 54 XX 65 XX
(12hrs) 76 XX
87 XX
(12hrs) 98 XX
Axial Strain (mm) 10 a 21
aa 32
aa 43
aa 54
aa 65
aa 76
aa 87
aa 98
aa
Lateral Strain (mm)
X 10 rx 21
rxrx
32
rxrx
43
rxrx
54
rxrx 65
rxrx
76
rxrx
87
rxrx
98
rxrx
Z 10 rz
21
rzrz
32
rzrz
43
rzrz
54
rzrz 65
rzrz
76
rzrz
87
rzrz
98
rzrz
③ Strain measurement during Continuous Dynamic loading
Table 4.7 Strain measurement during Continuous Dynamic loading
Loading Period (mins)
1 5 15 30 60 120 180 240 300 360 540 1080
Measure @ every 12hr interval up to failure
No. of Vibrations (in ,000s)
2.8 14 42 84 168 336 504 672 840 1,008 1,512 3,024 5,040 to Failure
Axial Strain (mm)
10
aa 51
aa 155
aa 30
a 60
a 120
a 180
a 240
a 300
a 360
a 540
a 1080
a
Lateral Strain (mm)
X - - - - - - - - - - -
Z - - - - - - - - - - -
: Measure lateral strains prior to loading and at Failure
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④ Strain measurement during Multi-stage Static loading
Table 4.8 Strain measurement during Multi-stage Dynamic loading 0
c - 1
c - 2
c - 3
c - 4
c
Loading Steps Loading Unloading Loading Unloading Loading Unloading Loading Unloading Loading
10 X 21 XX
(12hrs) 32 XX
43 XX
(12hrs) 54 XX 65 XX
(12hrs) 76 XX
87 XX
(12hrs) 98 XX
Loading period (mins) 00 ft
0
ft →
12hrs
0
ft +
12hrs→1
ft
1
ft →
12hrs
1
ft +
12hrs→2
ft
2
ft →
12hrs
2
ft +
12hrs→3
ft
3
ft →
12hrs
3
ft +
12hrs→4
ft
No. of Vibrations 00 c 0
10
cc
0
21
cc 0 32
cc
0
43
cc
Axial Strain (mm) 10 a 21
aa 32
aa 43
aa 54
aa 65
aa 76
aa 87
aa 98
aa
Lateral Strain (mm)
X 10 rx 21
rxrx
32
rxrx
43
rxrx
54
rxrx 65
rxrx
76
rxrx
87
rxrx
98
rxrx
Z 10 rz
21
rzrz
32
rzrz
43
rzrz
54
rzrz 65
rzrz
76
rzrz
87
rzrz
98
rzrz
⑤ Strain measurement during combined Static and Dynamic continuous loading
Table 4.9 will be determined after observing the characteristics of specimen strains measurement in accordance with Tables 4.5 and 4.7.
⑥ Strain measurement during combined static and dynamic Multi-stage loading
Table 4.10 will be determined after observing the response of specimen strains measured in accordance with Tables 4.6 and 4.8.
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Table 4.9 Summary of conditions of testing for Full Phase comprehensive testing
Table 4.10 Quantitative Schedule of Tests for Static and Dynamic Laboratory & Field Tests for Sophisticated Analysis for
Phase 1
OPMCS ① ② ③ ① ② ③ ④ ⑤ ① ② ③ ① ② ③ ④ ⑤ ① ② ③ ④ ⑤ ⑥
① ② ③ ④① ② ③
Item
No. Gravel
Sandy
Gravel GCS GCS 24 h
ours
72 h
ours
168
hour
s
A
B
C
D
E
A
B
C
D
E
A
B
C
D
E
A
B
C
D
E
A PV Type 1
B PV Type 2
C PV Type 3 N/A
D PV Type 4
E
A
B
C
D
ENotes:
: To be perfomed; : NOT to be performed; OBRM: Optimum Batching Ratio Method; OPMC: Optimum Mechanical & Chemical Stabilization; GCS: Graded Crushed Stone;
GG: Geogrid; LTC: Long Term Consolidation; PV: Pavement
Rem
arks
3.4.10
Refrence Subsection within Section 3.4 of the Proposal
Stat
ic C
ontin
ous
Stat
ic M
ulti-
stag
eDy
nam
ic
Cont
inou
sDy
nam
ic M
ulti-
stag
eSt
atic
/Dyn
amic
Cont
inou
sSt
atic
/Dyn
amic
Mul
ti-st
age
Heat
ing/
Fre
ezin
g
Cycl
esCh
emic
al
Envi
ronm
ent
3.4.7
Modes of Loading
LTC Period
Creep
Measurement
Full
Area
Circ
umfe
rent
ial
Cent
roid
Defo
rmed
Rib
s
Cross-section
Variation
3.4.5
Critical State (Deformed
Geogrids)
3.4.6
Punc
hed
Node
s
Twist
ed
Geom
etry
Test Description 2GG 3GG 4GG
3.4.2 3.4.4
Mode & Location of
Imbediment
Soak
ed
Uns
oake
d
Soaking Conditions
Part
ially
soak
ed
0GG 1GG
3.4.1Reference Subsection
OBRM
Direct Shear2
1
Lab
Deflection Testing
Geomaterial Type
Conditions→
Lab
Consolidated
Undrained Triaxial
Compression (CUTC)
3
4
5
6
Dynamic Cone
Penetration (DCP)
Dynamic Loading
Lab
Fiel
dFi
eld
Unconfined
Compression
Strength (UCS)
Loca
tion
of T
est
Lab
3.4.1 3.4.2 3.4.4 3.4.5 3.4.6 3.4.7 3.4.10
Geomaterial
Type
Soaking
Conditions
Mode &
Location of
Imbediment
Cross-section
Variation
Critical State
(Deformed
Geogrids)
Modes of
Loading
Creep
Measurement
No. of
TestsRemarks
Item
No.A 2[①&③] 3[①,②&③] 5[①~⑤] 3[①~③] 0 1[①] 0 90
B 2[①&③] 3[①] 1[②] 3[①~③] 5[①~⑤] 1[①] 0 30
C 1[①] 1[①] 5[①~⑤] 3[①~③] 0 1[①] 0 15
D 1[④] 3[①~③] 5[①~⑤] 3[①~③] 0 1[①] 0 45
E 1[④] 1[①] 1[②] 1[①] 3[①,③&⑤] 1[①] 0 3
183 SubTotal
A 2[①&③] 2[①&③] 3[①~③] 3[①~③] 0 1[①] 0 36
B 2[①&③] 1[①] 1[②] 1[①] 5[①~⑤] 1[①] 0 10
C 1[④] 1[①] 3[①~③] 1[①] 3[①,④&⑤] 1[①] 0 9
D
E
55
A 2[①&③] 1[①] 2[①&②] 3[①~③] 0 1[①] 3[①~③] 36
B 1[②] 1[①] 2[①&②] 1[①] 0 1[①] 3[①~③] 6
C 1[④] 1[①] 2[①&②] 1[①] 0 1[①] 3[①~③] 6
D
E
48
A 2[①&③] 3[①~③] 5[①~⑤] 1[①] 0 1[③] 0 30
B 1[②] 2[①&②] 2[①&②] 1[①] 0 1[③] 0 4
C 1[④] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
D
E
40
A PV Type 1 15
B PV Type 2 10
C PV Type 3 10
D PV Type 4 10
E
45
A 2[①&③] 3[①~③] 5[①~⑤] 1[①] 0 1[③] 0 30
B 1[②] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
C 2[①&③] 1[①] 1[②] 1[①] 0 1[③] 0 6
D 1[④] 3[①~③] 2[①&②] 1[①] 0 1[③] 0 6
E 2[①&③] 1[①] 2[①&②] 3[①~③] 0 2[③&④] 0 12
60 Subtotal
431 TOTAL
6 Dynamic Loading
Deflection Testing5
4Dynamic Cone
Penetration (DCP)
Reference Subsection
Conditions of Testing→
1
Unconfined
Compression Strength
(UCS)
Consolidated
Undrained Triaxial
Compression (CUTC)
3
2 Direct Shear
Test Description
N/A
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
59 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.6.3.5 Brief notes on the Testing Regime
I. Basic Physical and Mechanical Properties
The physical and mechanical properties that will be obtained from the standard tests for soils/gravels and aggregates are presented in Tables 4.2 and 4.3 respectively. OBRM will be adopted in standardizing all the materials to be used in this Study.
II. Static and Dynamic Laboratory and Field tests for Sophisticated Analysis
As mentioned in subsection 4.6.3.3 I, Performance Based Design and by extension Performance Based Specifications (PBS) requires the adoption of sophisticated methods. Consequently, the testing regime under this subsection has taken this fact into consideration.
Table 4.11 is a summary of the type of tests, engineering parameters and main objectives.
Table 4.11 Summary of tests, engineering parameters and main objectives
Item No.
Description of Test Engineering Parameters
Application in reference to PBS for Geogrids
Reference in Specs
1. Unconfined Compression Strength (UCS) 1.1 Continuous loading 1.2 Multiple loading Empirical Elastic
Modulus (EE) Empirical ELS (ELSE)
Strength (qu, Cu) Angle of Shearing
Resistance (Φ΄) Modulus of
Deformation (E50)
Compressive strength, qu 3.1.2
Degree of Interlocking, I
3.4.1
uI C ratio, SI
3.1.5
Deformation Resistance, DR(E50, EE,YS, ELSE)
3.2.3
Maximum Compressive Strain,
af 3.1.4
Stress distribution/Intensity 3.6.1
2. Direct Shear
Sheer Strength ( f )
Angle of Shearing Resistance
Shear Strength, 3.1.3
Degree of Interlocking, I 3.4.1
SI ratio, I 3.1.5
Stress distribution/Intensity 3.6.1
3. Consolidated Undrained Triaxial Compression (CUTC
Creep, a
Deviator Stress, (q)
Axial Stress, ( a )
Lateral Stress, ( r )
Angle of Shearing Resistance, (Φ)
Elastic Modulus, (E) Shear Modulus, (G) Modulus of
Shear strength, q 3.1.3
Failure Stress ratio, f 3.1.6
Elastic Modulus, E 3.2.1
Shear Modulus, G 3.2.1
Elastic Limit Strain, ELS 3.2.2, 3.7.1
Secondary Yield Strain 3.7.1
December 1, 2011
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60 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Item No.
Description of Test Engineering Parameters
Application in reference to PBS for Geogrids
Reference in Specs
Deformation, (E50) Secondary Yield
Strain, YS Mean Effective Stress
(p΄)
Tensile Strength, r 3.1.1
Tensile stress to Elastic Modulus ratio,
3.2.3
Compressive stress to Elastic Modulus ratio,
3.2.4
Degree of interlocking 3.4.1
Secondary consolidation creep
4. Dynamic Cone penetration (DCP)
Strength (qu, Cu) Angle of Shearing
Resistance (Φ΄) Modulus of
Deformation (E50)
Compressive strength, qu 3.1.2
Degree of Interlocking, I
3.4.1
uI C ratio, SI
3.1.5
Deformation Resistance, DR(E50, EE,YS, ELSE)
3.2.3
Maximum Compressive Strain,
af 3.1.4
Stress distribution/Intensity 3.6.1
5. Deflection Measurements Rebound Deflection () Response time ()
Structural capacity 3.3.1
6. Uniaxial Dynamic Loading 6.1 Continuous loading 6.2 Multiple loading
Strength (qu, Cu) Angle of Shearing
Resistance (Φ΄) Modulus of
Deformation (E50)
Compressive strength, qu 3.1.2
Degree of Interlocking, I
3.4.1
uI C ratio, SI
3.1.5
Deformation Resistance, DR(E50, EE,YS, ELSE)
3.2.3
Maximum Compressive Strain,
af 3.1.4
Stress distribution/Intensity 3.6.1
4.6.4 Equipment and Instrumentation
4.6.4.1 Laboratory Equipment
In compliance to the requirement of Item 6 on page 5 of the Revised TOR in Tender Notice No. 1, the Consultant will mainly carry out laboratory testing at the Materials Testing and Research Department (MTRD) laboratories by hiring their equipment. Both standard and innovatively modified methods of testing and equipment will be carried out and hired from the MTRD.
In exceptional cases however, where specialized testing and/or equipment is required, the Consultant shall seek the approval of the Chief Engineer (Materials).
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
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61 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
The Consultant also plans to procure some advanced hi-tech measurement equipment and instrumentation upon approval of the Equipment and Instrumentation Proposal that they intend to submit to the Client for his approval should they be awarded the contract. Reference can be made to Item F of Table 5.1 and Tool 5-1 in Volume III of this Technical Proposal.
4.6.4.2 Field Measurement Equipment
The Consultant shall provide all the field measurement equipment and/or hire from the MTRD at normal government rates in accordance with the provision of paragraph 2 of item 6 of the TOR.
Any other procurement of field measurement equipment will be done in close consultation with the Client and upon approval by the Chief Engineer (Materials), to have this done at any other approved laboratory.
4.6.4.3 Calibration and Verification of Equipment
Paragraph 3 of item 6 of the TOR stipulates that the Consultant shall ensure that all field measurements and laboratory tests are done using calibrated and verified equipment and shall make the necessary provision for the calibration and verification if required.
In compliance to this requirement, the Consultant shall take an inventory of all the necessary testing equipment and verify their calibration will be identified and arrangements made for the expeditious calibration accordingly. The Consultant shall also ensure that calibration and verification exercises are carried out consistently.
4.6.4.4 Innovatively Modified and Fabricated Equipment
In view of the fact that the assignment is unique and of a specialized nature, most testing will require the modification of the measurement apparatus and instrumentation in order to achieve higher precision and confidence levels of the engineering parameters measured.
The Consultant shall apply the experience he has acquired over the years within this region whereby modification and/or fabrication has been necessitated by the lack of appropriate accessories, parts or entire suitable equipment. Some of the modifications that the Consultant has made can be referenced from Tool 3 in Appendix V-III.3 of Volume III of this Technical Proposal.
Also refer to item F in Table 5.1 and 5.2 of Chapter 5 of this Technical Proposal.
4.6.5 Comprehensive Scientific and Engineering Analysis Based on long-term comprehensive research, the Consultant has developed powerful analytical tools that can be adopted for state of the art scientific and engineering analysis. These tools include Geomathematical modules, Geotechnical Engineering and Soil Mechanics models, modified experimental testing control systems, mechanistic-empirical simulation models, numerical analysis tools etc.
An example of one of the latest research oriented and experimental testing empirico-mathematical models, the GECPROM is presented in Volume III of this Technical Proposal as Tool 22.
The generalized GECPROM modeling procedure is presented in Figure 4.10.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
62 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Flowchart 4.10 The Generalized GECPROM Modeling Procedure
4.6.6 Methods of Design
Item 3.1 c) on the Scope of the Study on page 42 of the RFP makes a requirement, as one of the assignment tasks, of developing design procedures. The fundamental objective of the Study, as stipulated in item 2(i) of the TOR requires the same.
The Consultant therefore considers this as one of the most integral outputs as he has derived and depicted at the end of Figure 4.2 preceding Sub-section 4.6.1 of this chapter.
In consideration of the foregoing therefore, the Consultant shall endeavour to modify, improve and enhance the Comprehensive Method of Design (CMD), which they proposed in 2007 at the 23rd World Road Congress in Paris and the 14th African regional Conference on Soil Mechanics and Geotechnical engineering held in Yaounde, Cameroon in the same year.
The CMD, depicted in Attachment A4 (also refer to Tool 6 in Volume III of this Technical Proposal), has been modified and applied in the design of Geosynthetically reinforced pavement structures in the Isiolo Airport Project in the Isiolo Town of Meru County in Eastern State of the Republic of Kenya as well as Geosynthetically reinforced embankment and foundation geo-structures for oil exploration activities in the Jonglei State of Southern Sudan.
4.6.6.1 Geosynthetically Reinforced Pavement Structural Design
An example of the Consultant’s design is presented in Section 4.11 of this chapter and Attachment A4. Also refer to Tool 6 in Volume III of this Technical Proposal.
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63 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.6.6.2 Geosynthetically Reinforced Embankment and Foundation
Sub-section 4.11.2 provides an example of the Consultant’s design of Geosynthetically reinforced embankment and foundation design.
Reference can also be made to Attachment A4 and Tool 7 in Volume III of this Technical Proposal.
4.6.7 Methods of Construction
Examples of the methods of construction developed and employed for Isiolo Airport Project are presented in Attachment A5.
4.6.8 Quality Control Systems
Some of the Quality Control (QC) methods developed by the Consultant are presented Attachment A6.
4.6.9 Example of Development of Preliminary Performance –Based Specifications
An example of the parameter and specification mode for performance-based specifications is given under Sub-section 1.2 of Chapter 1 of this Technical Proposal.
4.6.10 Example of Maintenance Procedures Proposed
The Consultant has, over the years, developed, proposed and applied unique methods of predicting levels and quality of the maintenance required for pavement structures. An example of these procedures is presented as Tool 20 in Volume III of this Technical Proposal.
4.7 Performance Evaluation of Reinforced Earth (RE) Geostructures & Retaining
Walls
4.7.1 Evaluation and Monitoring of RE Geostructures
Evaluation and monitoring of the Reinforced Earth (RE) Geostructures will be undertaken on the basis of the Consultant’s experience of a similar nature presented in Tool 14 of Volume III, Section 3.2 of Chapter 3 of this Technical Proposal and partly introduced in Attachment A7.
4.7.2 Evaluation and Monitoring of Retaining Walls
Tool 16 provides detailed discussions regarding this case whereby the Consultant provided effective Value Engineering (VE) countermeasures and engineering employing research oriented technologies that he developed for purposes of that assignment after designing trial sections and undertaking monitoring and evaluation over a period of three years (36 months) through varying seasonal changes and moisture-suction variations.
Tool 16 is included in Volume III of this Technical Proposal.
4.7.3 Comprehensive Analysis and Characterization of RE-Retaining Walls Interaction
During the proposed assignment, the Consultant intends to apply the state of the art engineering principles and concepts as well as recently developed scientific theories and geo-mathematical models to undertake comprehensive analysis and characterization of the RE-Retaining Walls interaction for the geo-structures to be investigated along Thika Road.
Some of the Tools that will be applied are presented in Tool 17 of Volume III of this Technical Proposal.
December 1, 2011
[Development Of Construction & Performance Specifications For
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
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64 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
4.7.4 Consultant’s Relevant Experience in Developing Monitoring and Evaluation Systems &
Programmes
An example of monitoring and evaluation systems developed by the Consultant is provided under
Attachment A8 of this Technical Proposal.
4.8 Development of Mechanistic-Empirical Design Procedures for Geosynthetically
Reinforced Flexible Pavement Structure At an advanced stage of this assignment, the Consultant intends to develop mechanistic-empirical design procedures for Geosynthetically reinforced pavements and other Geostructures.
Tool 19 included in the Consultants Tool Book contained in Volume III of this Technical Proposal provides an insight on how the Consultant intends to achieve this goal.
4.9 Road Maintenance Procedures for Geosynthetically Reinforced Flexible
Pavement Structure Based on their experience and results from further research within this assignment, the Consultant intends to introduce road maintenance procedures for Geosynthetically reinforced flexible pavement structures equipped with prediction and simulation modes.
Reference can be made to Tool 20 of the Consultants Tool Book in Volume III of this Technical Proposal.
4.10 Consultant’s Relevant Experience in Research Oriented Design for
Geosynthetics Reinforced Geo-Structures Examples of the Consultant’s relevant experience in research oriented pavement and embankment designs
are given in Attachment A9, whereas references are cited in Tool 1.
4.11 Capacity Building The Consultant has partially addressed this issue in Attachment A 10 of this Technical Proposal.
4.12 Environmental Impact Assessment To promote environmental quality, including providing measures, environmental impact assessment (EIA)
and strategic environmental assessment should be considered for incorporating environmental concerns
for the projects under this Study.
Environmental scoping is to be undertaken during the Condition Surveys (refer to RFP TOR 3(b), 3(e), 3(f))
and Performance Evaluation of RE Geo-structures and Retaining Walls (refer to RFP 3d)). Further research
into the impact of Geosynthetics to the environment is to be undertaken in conjunction with the literature
review as stated in the RFP 3a) and correlated to practical field assessments with recommendations for
mitigation measures. Refer to example presented in Attachment A-11 of this Technical Proposal.
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
65 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Chapter 5 Work Plan
5.1 Basis of Work Plan Based on the Technical Approach and Methodology presented in Chapter 4 of this Technical Proposal as well as analysis of the Scope of the Study of the RFP presented in Item 3 of the Terms of Reference (Section 5), the proposed Work Plan is developed by the Consultant and discussed in this Chapter. A summary of the RFP requirements for the Work Plan is provided in Table 5.1 below.
Table 5.1 Summary of RFP Requirements for Work Plan
RFP Ref.
Breakdown
Particulars Ref. in Technical Proposal
Consultant’s Response/ Remarks
Form T4 △1
Proposed Main Activities of the Assignment
5.2 Activities defined as Tasks in this Technical Proposal
Content 5.2 & 5.3 Proposed in detail
Duration Fig. 5.3 Indicated in detail for each Main Task
Phasing Fig. 5.3 Indicated in detail for each Main Task
Interrelations 4, 5 & 6 Interrelated through schematics and tabulation
Milestones including interim approvals by the Client
Fig. 5.3 Indicated in Main Tasks/ Work Schedule
Delivery dates of the reports Fig. 5.3 Indicated in Main Tasks/ Work Schedule
Form T4 △2
Consistency with the Technical Approach and Methodology
Chap 4 & 5 Consistency demonstrated
Form T4 △3
Understanding of the TOR
Ability to translate them into a feasible working plan
Table 5.1, 5.2 & Fig. 5.1
Tasks derived from TOR, refined, adopted in Technical Approach & Methodology and translated into pragmatic Work Plan
Responsive to the TOR in general and the Scope of the Study (SOS) in particular
Form T4 △4
List of the final documents to be delivered as final Output
Reports
Table 5.3
Documents to be submitted in accordance with indications in the Main Tasks/ Work Schedule presented in Fig. 5.3
Reports to consist of various documents including drawings, tables, flowcharts, etc.
Drawings
Tables
Form T5 △5
Consistency with the Work Schedule of Form T8
Fig. 5.3, Table 5.1 & 5.3
Consistency with Work Schedule maintained
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
66 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
In response to the RFP, the Consultant proposes the main tasks and activities of the assignment, their content and durations incorporating phasing and interrelations, whilst indicating the milestones. The Work Plan also considers the Client’s intermittent intervention and modification of the Scope of the Services as stipulated under Clause 2.4 of the General Conditions of Contract on Page 53 of the RFP.
The Work Plan also gives provision for internal technical forums, presentations, site visits and other correspondence between the Client and the Consultant.
5.2 Tasks for required Services of the RFP The derived tasks for services that are required in accordance with the Consultant’s interpretation of the RFP are summarized in Table 5.2.
Table 5.2 Tasks for Services Required as Derived by Consultant from the RFP S/N Requirement Derived by
Consultant Section Ref. Task for Services
A Preliminaries
1 Award of Contract ITC 7 •Submit Letter of Acceptance
•Prepare Preliminary Documents
•Prepare for Technical & Financial Negotiations
2 Technical Negotiations ITC 6.2 •Review all Technical Documents related to Assignment for Consultancy Services
3 Financial Negotiations ITC 6.3 •Review all Financial Documents related to Assignment for Consultancy Services
4 Signing of Contract
B Mobilization
1 Commencement of Consulting Services 14 Days after Order to Commence
Data Sheet 7.2
•Respond to Commencement Notice
2 Orientation of Available Facilities GC 5.3 •Make Inventory of Available facilities
3 Courtesy Calls to Client and Relevant Stakeholders
Data Sheet 1.4b)
•Prepare Introductory Documents
4 Inception Meeting •Organize & set Date & Venue in consultation with Client
C Literature Review
1 Scientific & Engineering Theories, Concepts & Principles of Geosynthetics Reinforcement
TOR 3a)
•Identify & Source Relevant Literature •Assign Review Teams According to Field of Expertise •Formulate Sequence of Review •Correlate Review Results to Technical Problems, Scientific & Engineering Complexities that Curtail Research in Geosynthetics Reinforced Geostructures
2 Standards & Procedures for Testing Chemical, Physical & Mechanical Characteristics of Geosynthetics
TOR 3a)
3 Impact of Geometric Design Characteristics of Geosynthetics
TOR 3a)
4 Impact of Geosynthetics on the Environment
TOR 3a)
5 Other Relevant Literature TOR 3a)
D Condition Surveys of Previous Trial Sections (1987 ~ 2011)
1 Garsen ~ Lamu Road (B8/C112) & Garsen Bridge
TOR 3b) •Logistics for Mobilization to Site •General Assessment of Site Conditions •Identification of Study Sections •Engineering & Structural Evaluation of Distress Conditions
2 Upgrading to dual carriageway of Thika ~ Makutano Road (A2)
TOR 3b)
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S/N Requirement Derived by Consultant
Section Ref. Task for Services
3 Reconstruction of Eldoret ~ Burnt Forest Road (A104)
TOR 3b) •Analysis of Environmental Factors •DT/NDT In-situ Testing •Pavement Structural Evaluation •Comprehensive Analysis of Geosynthetics Performance
4 Reconstruction of Webuye ~ Malaba Road (A104)
TOR 3b)
E Development of Appropriate Methods of Testing, Design and Construction
1 Develop Appropriate Methods of Testing
4.6.3 •Derive and Analyze Response Factors for Performance Parameters •Determine Scale Effect •Determine Loading and Deformation •Design Modification Factors
2 Develop Tailored and VE Based Design Procedures
4.6.6 •Review the CMD •Apply Findings from C and D to Develop Design Principles and Philosophy •Define and Depict Design Procedure
3 Develop Efficient & Appropriate Methods of Construction
4.6.7 •Establish Inventory of Available Construction Equipment •Review Design Parameters •Determine Construction Factors and Sequence
4 Develop Quality Control and Assurance Systems
4.6.8 •Correlate Test Results, Construction & Design Requirements •Develop QC Boundary Limits Based on Material Characterization •Develop QC Requirements for Environmental & Construction
5 Derive Preliminarily Applicable Performance-Based General, Standard & Particular Specifications
4.6.9 •Review and Correlate Findings from C, D and E1~E4 •Carry Out Comprehensive Scientific & Engineering Analysis •Outline Performance-Based Specifications
F Procurement, Modification, Fabrication and Calibration of Field & Laboratory Testing Equipment & Instruments
1 Recommend Appropriate Testing Equipment for Geosynthetics Reinforcement
TOR 3c) •Identify State of the Art Testing Equipment and Instrument Manufacturers Worldwide •Review Literature on Equipment Manufacturing and Instrumentation •Determine Limitations of Available Equipment/ Instruments •Determine factors & Components that Require Modifications Assess & Evaluate Equipment Fabrication Capacity of Local Markets •Assess & Evaluate Equipment Calibration Capacity of Local Markets •Establish & Follow Procurement Procedures Develop and Adopt Modification Techniques & Technologies •Develop and Adopt Fabrication Processes, Techniques & Technologies •Confirm & Adopt Standard Methods & Procedures of Calibration
2 Procure Appropriate Testing Equipment for Geosynthetics Reinforcement
4.6.4
3 Modify Innovatively Testing Equipment as per Conditions & Necessity
4.6.4.4(1)
4 Fabricate Innovatively Testing Equipment as per Conditions & Necessity
4.6.4.4(2)
5 Calibration & Unification of Equipment & Instruments
4.6.4.3
G Development of Special Specifications for Geosynthetically Reinforced Embankments
1 Review and Correlate Findings from C and D
TOR 3e) •Carry out Comprehensive Analysis of Test Results •Evaluate Environmental Conditions and Factors
2 Apply Principles & Research Findings from Analytical results of C & D
4.6.6 •Review and Apply Findings from C and D.
3 Modify Specifications Developed from E.
4.6.9 •Review and Apply Findings from E.
4 Procure, Modify and/or Fabricate Specialized Equipment Based on Results from F.
4.6.4.4 •Review and Apply Findings from F.
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
68 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
S/N Requirement Derived by Consultant
Section Ref. Task for Services
5 Undertake Modified and Specialized Lab and Scale Model Testing
4.6 •Design Modified and Specialized Testing Regime with Reference to E1.
6 Carry Out Comprehensive Scientific and Engineering Analysis
4.6.5 •Review and Apply Test results from E and F.
7 Derive Vital Geo-Engineering Parameters for Design of Testing Regime for Geosynthetically reinforced Embankments
4.6 ~ 4.8 •Review and Apply Scientific and Engineering Findings from E and F.
H Design of Trial Sections for Geosynthetically Reinforced Embankments
1 Masalani Bridge Approaches TOR 3e)
•Logistics for Mobilization to Site •General Assessment of Site Conditions •Identification of Study Sections •Engineering & Structural Evaluation of Distress Conditions •Analysis of Environmental Factors •DT/NDT In-situ Testing •Pavement Structural Evaluation •Comprehensive Analysis of Geosynthetics Performance
2 Likoni ~ Shelly Beach TOR 3e)
3 Kiserian ~ Isinya Road (D523) TOR 3e)
4 Sigalagala ~ Butere Road (D260) TOR 3e)
I Development of Special Specifications for Geosynthetically Reinforced DBM/AC
1 Rehabilitation of Eldoret ~ Timboroa Road (A104)
TOR 3f) •Logistics for Mobilization to Site •General Assessment of Site Conditions •Identification of Study Sections •Engineering & Structural Evaluation of Distress Conditions •Analysis of Environmental Factors •DT/NDT In-situ Testing •Pavement Structural Evaluation •Comprehensive Analysis of Geosynthetics Performance
2 Rehabilitation of Eldoret ~ Webuye Road (A104)
TOR 3f)
3 Rehabilitation of Webuye ~ Malaba Road (A104)
TOR 3f)
4 Rehabilitation of Uplands ~ Kimende Road (A104)
TOR 3f)
J Development of Monitoring and Evaluation Programmes for Trials under H and I
1 Review Analytical Results from C to I.
4.6 ~ 4.8 •Modify and Apply Findings from C to I.
2 Apply Findings of C to I for Design of Monitoring & Evaluation Programmes
4.6 ~ 4.8 •Modify Findings and establish Monitoring and Evaluation Procedures
3 Apply Findings from F to Develop Suitable Instrumentation
4.6.4 •Determine Suitable Instrumentation
4 Design & Implement Immediate, Short-Term, Medium-Term & Long-Term Monitoring & Evaluation Programmes
TOR 3g) •Design and Implement Appropriate Monitoring and Evaluation Systems and Programmes
K Evaluation of Performance of Reinforced Earth Geostructures and Retaining Walls
1 Mobilization to Respective Sites TOR 3d) •Prepare Logistics and Plan for Mobilization •Coordinate Site Arrangements and Construction Programme with Mobilization Plan
2 Assessment of General Site Conditions
4.6.1 •Assess Geostructures •Measure Geostructural Sizes •Assess Access Conditions and Geometrical Characteristics
3 Evaluation of Environmental Conditions
4.6.1 •Evaluate Topography •Evaluate Hydraulic Conditions •Evaluate Soil Conditions •Evaluate Subsurface Drainage
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S/N Requirement Derived by Consultant
Section Ref. Task for Services
4 Determination of Environmental Factors
4.6.5 •Determine Hydrogeological Parameters •Determine Rainfall/ Precipitation Intensity •Analyze Impact of Environmental Factors
5 Analysis of Loading Factors 4.6.5 •Analyze Traffic Volume and Characteristics •Derive Loading Intensity
6 Analysis of Displacement and Deformation Factors
4.6.5 •Analyze Dynamic Loading Effect •Correlate Dynamic Loading and Environmental Factors and Determine Effect
7 Determine Appropriate Testing Equipment & Instrumentation
4.6.4 •Carry out Comparative Model Testing Adopting In-situ Materials, Geo-structural Layer Configuration, Mode of Reinforcement and Loading Conditions to Simulate Existing Current
8 Determine Appropriate Monitoring & Evaluation Programmes & systems Based on Model from J.
4.6.1, 4.6.5~4.6.9
•Review and Modify Monitoring and Evaluation Methods Developed in J.
9 Implement Monitoring & evaluation Programmes
•Apply Modified Methods and Implement Monitoring and Evaluation Programmes
10 Comprehensive Scientific & Geotechnical engineering Analysis
4.6.5 •Collect Data Intensely •Carry out Detailed Data Analysis •Apply Advanced State of the Art Analytical Tools for Comprehensive Analysis
L Reporting, Technical Forums, Internal Presentations and Monthly Progress Meeting
1 Submission of Inception Report TOR 7a) •Compile and Submit 4 Copies of the Inception Report
2 Submission of Interim Report TOR 7b) •Compile and Submit 4 Copies of Interim Reports for 5 Phases
3 Submission of Draft Final Report TOR 7c) •Compile and Submit 4 Copies of a Draft Final Report
4 Submission of Final Report TOR 7d) •Discuss and Present Results and findings of Draft Final report to Stakeholders during Workshop •Submit Final Report for Approval by Client
5 Organization of Technical Forums TOR 3i) •Organize Technical Forum to Discuss Interim results of 1st Interim Report •Organize Technical Forum to Discuss Interim results of 2nd Interim Report •Organize Technical Forum to Discuss Interim results of 3rd Interim Report •Organize Technical Forum to Discuss Interim results of 4th Interim Report •Organize Technical Forum to Discuss Interim results of 5th Interim Report
6 Organization of Internal Presentations
TOR 3i) •Organize Presentation to Client to Disseminate Findings reported in 3rd Interim Report •Organize Presentation to Client to Disseminate Findings reported in Draft Final Report •Organize Presentation to Client to Disseminate Findings reported in Pre-Workshop Findings
7 Monthly Progress Meetings TOR 3j) •Organize Monthly Progress Meetings with Client to Assess Progress and Quality of Output/Deliverables
M Organization of Workshop for Stakeholders
1 Organize Workshops for Stakeholders
TOR 3i) •Confirm Date, Venue and number of Participants with Client •Make Necessary Logistical Arrangements •Prepare Necessary Documents, Print outs, Media and Material
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Road]
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5.3 Task Analysis and Management
5.3.1 Task breakdown and Reciprocal Activities
The main tasks are generated from the Scope of the Study given under Item 3 of Section 5 of the RFP addressing the TOR, whilst the detailed tasks and activities are derived from the main tasks as presented in Chapter 4 of this Technical Proposal in which the Technical Approach and Methodology are discussed, the Consultant’s Tool Book presented in Section 5.8 of Chapter 5 and the requirements in the General Conditions of Contract of the Contract for Consultancy Services of the RFP.
In all cases detailed examination of relevant documents in the RFP is made in accordance with the requirements stipulated in paragraph 3.2 and paragraph 3.4(c) in Section 2 concerning Instructions To Consultants (ITC).
The task breakdown presented in Table 5.2 mainly takes into account the duration required for each task, reference section from where the task is derived and/or linked, the tools and/or techniques necessary to address the task and the output as a result of applying the Technical Approach and implementing the Methodology and Work Plan effectively.
Table 5.3 gives the Tasks Breakdown, Reciprocal Activities, Mode of Implementation and Personnel Tasks Assignment (Refer to Attachment A3.3)
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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Figure 5.1 Proposed Tasks Management System and Implementation Arrangement by Logistics
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5.3.2 Proposed Tasks Management System
The proposed sequential tasks management system is depicted in Figure 5.1. A reciprocity concept is applied in ensuring proper correlation of the tasks to facilitate for solid assignment integration management based on advanced time and logistics management of the assignment tasks, the time durations indicated in Table 5.3 in the preceding sub-section, have been taken into consideration as one of the main input parameters. In order to achieve time savings, logistical coordination is carefully examined.
5.4 Mode of Task Implementation In developing the optimum mode of task implementation, the Consultant takes into consideration and correlates the structure, composition and level of expertise and discipline of his team to the tasks and consultancy services required by the Client. As shown in Table 5.3 and Figure 5.3, each individual staff is assigned a number of tasks which fall within his field of expertise and capacity of execution. The Team Leader, however, is expected to oversee and effectively manage all staff and tasks whilst executing his professional duties accordingly.
5.5 Main Tasks/Work Schedule
5.5.1 Main Task/Work Schedule
The main Task/Work Schedule is presented in Figure 5.2 in the Form T8 format.
The Consultant in consultation with the Client will identify the works to be prioritized and produce a Schedule of Works that will include exact locations by chainage and items of study as per the TOR of the RFP and based on initial site survey findings, give a breakdown by activity definition, activity sequencing, and activity duration estimation.
The results will be summarized as activity list, work breakdown structure, project network, activity duration estimates for preparation of the project scheduling by computer software e.g. Microsoft Project 2010, Prince, etc. The Consultant plans to employ “The Project Manager” and equivalent software to find the Critical Path and control of progress as well as budget control.
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Legend:
Preparation, Development and/or Design Period
Task Implementation Period
Apply Proposed Design Procedures and
Standard Specifications to Develop Special
Specifications for Further Trials for
Reinforced Embankment as per TOR
9Main
Tasks
5.0
0.0
1.0
2.0
3.0
SUM
MAR
Y OF
MAI
N AS
SIGN
MEN
T TA
SKS
8.0
6.0
4.0
4 5 6 7 82011 - 2012/Month
Days
1 2 3
7
Organize Workshop for Stakeholders
Final Report
Develop Monitoring and Evaluation
Systems for the Trial Sections in 3.0 and
4.0 in accordance with the TOR
Stipulations
Evaluation of Performance of Reinforced
Earth (RE) Geostructures & Retaining Walls
along the Nairobi ~ Thika Road A2 and
Design of Monitoring Programmes
9.0
7.0 Reporting
Inception
Interim
Draft Final
21 28 7 14 21
Undertake Condition Surveys including
Structural Evaluation on Existing Geogrid Trial
Sections in accordance with the TOR
Relevant Literature Review
Develop Appropriate Methods of Testing &
Equipment, Design Procedures,
Construction Methods, Specifications and
Quality Control Systems
Apply Proposed Design Procedures and
Standard Specifications to Develop Special
Specifications for Further Trials for Geogrid
Reinforced DBM as per TOR
21 28 7 14 21 28 7 1414 7 14 21 28 728 7 14 21 28 21 28 7 1414 21 28 7 14
Figure 5.2 Main Tasks/Work Schedule
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74 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
5.5.2 Priority of Schedule of Works
As presented in Figure 4.2 under Section 4.6 of Chapter 4, which addresses the overall approach and methodology of achieving objectives, the Consultant will investigate the sites in reference to the TOR of the RFP and identify the priorities to be carried out. The priority criteria are:
Literature review Research on Geosynthetically-reinforced embankments and pavement materials Design of Research Regime Condition surveys including structural evaluation on Geosynthetics trial sections constructed
in Kenya from 1987 to 2011 Development of Design Procedures, Preliminary Construction Specifications and Quality
Control Systems Recommendation of Appropriate Testing Equipment for Geosynthetics reinforcement Performance Evaluation of Reinforced Earth (RE) Retaining Walls along Nairobi ~ Thika Road
(A2) and Design of Monitoring Programmes Development of Special Specifications for Further Trials on Geosynthetically Reinforced
Embankments on selected roads in Kenya countrywide Development of Special Specifications for Further Trials on Geosynthetically Reinforced
DBM/AC on selected roads in Kenya countrywide Development of Monitoring and Evaluation Programmes for the trial sections Submission of Reports Organization of Stakeholders Workshops Preparation of Final Reports
5.6 Implementation Arrangement
5.6.1 Implementation Arrangement by Logistics
The implementation arrangement proposed by the Consultant mainly takes the following facts into consideration.
1. The Team Leader will work in close consultation with the Chief Engineer (Materials). 2. The Team Leader will consistently brief and update the Chief Engineer (Materials). 3. The Client may give instructions and/or require the services of the Consultant at any time during
the assignment to which the Consultant shall respond promptly. 4. The logistical arrangements will concentrate between the Head Office and the Project roads
indicated in the Scope of the Study. 5. Site reports and updates shall be received by the Head Office on a daily basis. 6. Communication and correspondence will mainly be via mobile phones and e-mail. 7. Movement between the varying sites will be well coordinated and efficiently executed. 8. Progress meetings, technical forums and presentations to the Client are held on a monthly basis
and/or as shall be directed by the Client. 9. The Logistics Manager will always ensure a proper rotation of his team for site assignments.
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10. The Consultant will ensure that he upholds good relations with the Clients team on site, the local authority and the Contractor.
The proposed implementation arrangement tabulated in Table 5.3 and schematically depicted in Figure 5.3.
5.6.2 Implementation Arrangement by Tasks
Implementation arrangement by tasks is realized by superimposing the tasks panel on the project specific organization structure and subsequently assigning the respective tasks to the relevant expertise possessed and to be executed by each expert.
The implementation arrangement by tasks diagram is presented in Figure 5.3.
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
76 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Figure 5.3 Implementation Arrangement by Tasks (Refer to Attachment A3.5)
Geotechnical Engineer/ Team Leader
Eng. Dr. J.N. Mukabi
Research Scientist
K.W.Ng'ang'a
Senior Engineering
Geologist
Assistant Research Engineer
Eng. S.F. Wekesa
Highways/ Materials Engineer
Eng. Kabbia Njoroge P.
Senior Geoscientist
J. Okado
Mechanical Engineer
A. Muthoka
CAD/ Field Testing /
Instrumentation Expert
L. Ngigi
Equipment/ Instrumentation
Research Assistant
Materials Research Assistant
Chief Systems Analyst/ ICT &
GeomaticsSpecialist
S. Kotheki
TASKS
A1 Award of Contract
A2 Technical Negotiations
A3 Financial Negotiations
A4 Signing of Contract
B1 Commencement of Consulting Services 14 Days after Order to Commence
B2 Orientation of Available Facilities
B3 Courtesy Calls to Client and Relevant Stakeholders
B4 Inception Meeting
C1 Scientific & Engineering Theories, Concepts & Principles of Geosynthetics
D1 Garsen ~ Lamu Road (B8/C112) & Garsen Bridge
C2 Standards & Procedures for Testing Chemical, Physical & Mechanical
C3 Impact of Geometric Design Characteristics of Geosynthetics
C4 Impact of Geosynthetics on the Environment
D2 Upgrading to dual carriageway of Thika ~ Makutano Road (A2)
Senior Materials Technologist
Ogallo J.B. Julius
Materials Technologist
K.G. Wambugu
Senior Lab Technician
Senior Materials Technician
Lab/ field Tehnicians
Site Engineer
J. Mosaria
Logistics Manager
Office Administrator
Support Staff
Secretaries
D3 Reconstruction of Eldoret ~ Burnt Forest Road (A104)
D4 Reconstruction of Webuye ~ Malaba Road (A104)
E1 Develop Appropriate Methods of Testing
E2 Develop Tailored and VE Based Design Procedures
E3 Develop Efficient & Appropriate Methods of Construction
E4 Develop Quality Control and Assurance Sytems
E5 Derive Preliminarily Applicable Performance-Based General, Standard &
F1 Recommend Appropriate Testing Equipment for Geosynthetics Reinforcement
F2 Procure Appropriate Testing Equipment for Geosynthetics Reinforcement
F3 Modify Innovatively Testing Equipment as per Conditions & Necessity
F4 Fabricate Innovatively Testing Equipment as per Conditions & Necessity
F5 Calibration & Unification of Equipment & Instruments
G1 Review and Correlate Findings from C and D
G2 Apply Principles & Research Findings from Analytical results of C & D
G3 Modify Specifications Developed from E.
G4 Procure, Modify and/or Fabricate Specialized Equipment Based on Results
G5 Undertake Modified and Specialized Lab and Scale Model Testing
G6 Carry Out Comprehensive Scientific and Engineering Analysis
G7 Derive Vital Geo-Engineering Parameters for Design of Testing Regime for
H1 Masalani Bridge Approaches
H2 Likoni ~ Shelly Beach
H3 Kiserian ~ Isinya Road (D523)
H4 Sigalagala ~ Butere Road (D260)
I1 Rehabilitation of Eldoret ~ Timboroa Road (A104)
C5 Other Relevant Literature
I2 Rehabilitation of Eldoret ~ Webuye Road (A104)
I3 Rehabilitation of Webuye ~ Malaba Road (A104)
I4 Rehabilitation of Uplands ~ Kimende Road (A104)
J1 Review Analytical Results from C to I.
J2 Apply Findings of C to I for Design of Monitoring & Evaluation Programmes
J3 Apply Findings from F to Develop Suitable Instrumentation
J4 Design & Implement Immediate, Short-Term, Medium-Term & Long-Term
K1 Mobilization to Respective Sites
K2 Assessment of General Site Conditions
K3 Evaluation of Environmental Conditions
K4 Determination of Environmental Factors
K5 Analysis of Loading Factors
K6 Analysis of Displacement and Deformation Factors
K7 Determine Appropriate Testing Equipment & Instrumentation
K8 Determine Appropriate Monitoring & Evaluation Programmes & systems Based on
K9 Implement Monitoring & evaluation Programmes
K10 Comprehensive Scientific & Geotechnical engineering Analysis
L1 Submission of Inception Report
L2 Submission of Interim Report
L3 Submission of Draft Final Report
L4 Submission of Final Report
L5 Organization of Technical Forums
L6 Organization of Internal Presentations
L7 Monthly Progress Meetings
M1 Organize Workshops for Stakeholders
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5.7 Summary of Deliverables A summary of the deliverables is presented in Table 5.4. The Consultant will prepare and submit to the Client, the reports in accordance with the requirements in the TOR of the RFP as shown in Table 5.4.
Table 5.4 Submission of Reports
S/No. Report Contents Submission No Copies
1. Inception Report
Proposed methodologies for the Study and detailed work programme for the contract
Within 4 weeks after commencement of Consultancy Contract
2 No 4 No
2. Draft Report Detailed findings of the completed tasks, analyses, results and recommendations containing all supporting material
Within 2 weeks after completion of the Study Tasks
2 No 4 No
3. Draft Final Report
Summarized findings, analyses, results and recommendations of the Study containing all supporting material including comments from the Engineer
Within 4 weeks after the Engineers comments on the Draft Report
2 No 4 No
4. Final Study Report
Incorporating all revisions arising from Stakeholders Workshop
Within 4 weeks after the Stakeholders Workshop
2 No 4 No
5. Meetings Discussion of Assignment at any stage as may be directed by the Client and/or the Engineer
During the Duration of Contract
As necessary
Note: All Reports will include Drawings, Figures, Flowcharts and other forms of technical illustrations.
5.8 Consultant’s Tool Book The Consultant’s Tool Book is a compilation of integral intellectual accessories that are of paramount importance in providing relevant technical, scientific and engineering guidelines for Research and Innovation for Sustainable Development (RISD), unique design approaches, methods of construction, Quality Control (QC) systems and maintenance procedures in the respective field of assignment.
The List of Tool Books is tabulated in Table 5.5 whilst the Tool Books are compiled in Volume III of this Technical Proposal.
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Road]
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Table 5.5 Consultant’s List of Tool Books
Consultant's Toolbook
Tool No. Tool Particular Reference/Remarks
Tool 1 Existing Library for Relevant Literature Review Local; Regional: Global
Tool 2 Conditions Survey Method, Scoping and Inventory
Proposed Approach for Effective Investigation and
Determination of Appropriate Engineering Counter
measures for failure or defect Sections
>The role of enhanced Research Oriented Highway
and Foundation Design for Sustainable Development
>Innovating modified NDT/DT techniques for the
Evaluation of an Existing Pavement Structure -
Method of Testing
>Innovating modified NDT/DT techniques for the
Evaluation of an Existing Pavement Structure -
Theoretical Considerations and Experiemental
Results
>Innovating modified NDT/DT techniques for the
Evaluation of an Existing Pavement Structure-
Theoretical Considerations and Experiemental
Results>Examples of Innovbative modified testing
techniques
Tool 5 Innovative Modification of Testing EquipmentMechanistic analysis of Benkelman Beam Deflection
measurements
>Reconstruction of Runway Pavement at Isiolo
Airport in Isiolo, Kenya
>Use of Geogrids in Pavement Construction [US Army
Corps of Engineers]
>Comprehensive method of analysis for cost effective
Detailed Design of Pavement Structures [papers
submitted to the 14th Africa Regional Congress [ARC]
in Yaounde, Cameroon, 2007]
>Application of Consolidation and Shear Stree ratio
concepts in foundation design and construction
>Employing Cost-Effective counter measures to slope
failure based on newly developed OPMC stabilization
concepts
Tool 7
Geosynthetically Preliminary Reinforced Embankment Design White Nile Oil exploration Programme including
Design Drawings [Study, Design and Construction
Supervision]
Tool 8Geosynthetically Preliminary Reinforced Roadside Drainage and Canal Design in
Problematic Soil Areas
Geomat 2011 [Characterizing the interaction of
Geomat with fine grained Black Cotton Soils]
Tool 9Appropriate Methods of Construction for Geosynthetically Reinforced Pavement
Layer and Composite Structures
Reconstruction of Runway Pavement [a] Procedure
for construction of stabilized basde course [b]
programme of works with superimposed S-Curve
>Papers submitted to the 14th Africa Regional
Congress [ARC] in Yaounde, Cameroon, 2007
Institute of Engineers of Kenya [IEK] Publications
Tool 3 Design of Research Regime and Procedures
Tool 4 Design of Methods of Testing
Tool 6 Geosynthetically Preliminary Reinforced Pavement Structural Design
Tool 10Appropriate Specifications for Geosynthetically Reinforced Pavement Layer and
Composite Structures
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Tool No. Tool Particular Reference/Remarks
>Laboratory and In-situ Testing and Analysis for
Performance Based Specifications [PBS] for Geogrids
[comprehensice research for advanced specifications,
designs and methods of construction
>To be developed
Tool 12Development of Special Specifications for Further Trials for Geosynthetics
Reinforced DBM>To be developed
Tool 13Development of Special Specifications for Further Trials for Geosynthetics
Reinforced Embankments>To be developed
Tool 14 Monitoring and Evaluation Systems & Procedures for Trial Sections
Tool 15 Evaluation and Monitoring of Performance of Reinforced Earth Geostructures
Tool 16Evaluation and Monitoring of Performance of Reinforced Earth (RE) Retaining
Walls (RW)
>Employing Cost-Effective counter measures to slope
failure based on newly developed OPMC stabilization
concepts
Tool 17Comprehensive Analysis and Characterization of Reinforced Earth-Retaining
Wall Interaction
Advances in Geosynthetics Materials and applications
for soil reinforcement and environmental protection
works
Tool 18 Consultant's Relevant Experimental Testing and Research Experience >Company Brochure
>Mechanistic - Empirical Pavement Design procedure
for Geosynthetically stabilized Flexible pavements
>Mechanistic - Empirical Pavement Design Guide
Implementation
>To be developed
> Proposed New method of determining period and
level of maintenance [Juba River Access Road Design]
>To be developed
Tool 20-1 Road Maintenance - Inspection
Tool 20-2 Road Maintenance - Evaluation
Tool 20-3 Road Maintenance - Execution
Tool 21Quality Control Systems >Quality Control [Reconstruction of runway
pavement at Isiolo Airport, in Isiolo Kenya
Tool 21 Tools for Comprehensive Scientific and Engineering Analysis GECPROM
Tool 22 Advanced Research and Development Proposal
NB:
Road Maintenance Procedures for Geosynthetically Reinforced Flexible
Pavement StructuresTool 20
Reference may also be made to Appendix 2 - Consultant's Relevant Experimental and Research Experience
Guidelines to Appropriate Application of Proposed Design Procedures and
Standard Specifications for Geosynthetically Reinforced StructuresTool 11
Development of Mechanistic-Empirical Design Procedures for Geosynthetically
Reinforced Flexible Pavement StructuresTool 19
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Road]
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Chapter 6 Organization and Staffing
The RFP requirements for the Consultant’s organization and staffing are summarized in Table 6.1 below.
Table 6.1 Summary of RFP Requirements for Organization and Staffing S/No. Reference
From RFP Particulars of Requirement Reference
Section Consultant’s Remarks/Comments
1. Form T4 Structure and Composition of Team Table 6.2 Tabulated accordingly 2. Form T4 Main Disciplines of the Assignment Table 6.2 Tabulated accordingly 3. Form T4 Identification of the Key Expert Responsible
for Particular Assignment Table 5.3 & Fig. 5.3 Tabulated if Table 5.3 &
Schematically Depicted in Figure 5.3 of Chapter 5
4. Form T4 Proposed Technical Staff Table 5.3 & Fig. 5.3 Included accordingly 5. Form T4 Support Staff Table 5.3 & Fig. 5.3 Included accordingly
Note: Organization and Staffing Proposed by Consultant in accordance with the RFP Requirements and Stipulations.
6.1 Overall Organization Structure of the Consultant The standard organization structure of the Consultant is presented in Figure 6.1.
Figure 6.1 Kensetsu Kaihatsu Ltd Overall Organization Structure
December 1, 2011
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6.2 Proposed Project-Specific Organization Structure for the Assignment The project specific organization structure proposed for this Study by the Consultant is presented in Figure 6.2.
Figure 6.2 Kensetsu Kaihatsu Ltd Proposed Project-Specific Organization Chart
Geotechnical Engineer/ Team Leader
Eng. Dr. J.N. Mukabi
Research Scientist
K. W. Ng'ang'a
Senior Engineering
Geologist
K.W. Ng'ang'a
Assistant Research Engineer
Eng. S.F. Wekesa
Highways/ Materials Engineer
Eng. Kabbia Njoroge P.
Senior Materials Technologist
Ogallo J.B. Julius
Senior Geoscientist
J. Okado
Mechanical Engineer
A. Muthoka
CAD/ Field Testing /
Instrumentation Expert
L. Ngigi
Equipment/ Instrumentation
Research Assistant
Materials Research Assistant
Chief Systems Analyst/ ICT &
GeomaticsSpecialist
S. Kotheki
Site Engineer
J. Mosaria
Logistics Manager
Materials Technologist
K.G. Wambugu
Office Administrator
Support Staff
Secretaries
Senior Lab Technician
Senior Materials Technician
Lab/ field Tehnicians
December 1, 2011
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Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
82 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
6.3 Composition of Proposed Staff The composition of the Consultant’s proposed staff and their respective fields of expertise is presented in Table 6.2.
Table 6.2 Composition of Consultant's Proposed Professional Staff (PS)/ Support Staff (SS) Specific Field of Expertise in Relation to Assignment
Ind
ex
Position/ Task Staff Name Specific Field of Expertise in Relation to Assignment
Ye
ar
s o
f E
xp
er
ien
ce
To
tal
M/
Mo
nth
s
by
Ex
pe
rt
PS2 Highways/ Materials Engineer Eng. Kabbia Njoroge Petterson
Pavement Structure Design & Road Construction Materials; Performance Evaluation of RE Retaining Walls; Geometric Design, Structural Evaluation on Reinforced Geostructures including Geosynthetically Stabilized; Methods of Construction, Pavement Design & Testing
32 6.36
PS1 Lead Consultant Eng. Dr. John Ngaya Mukabi
Advanced Research in Geomaterials, Geosynthetics & RE Geostructures. Design of Research & Testing Regimes, Trial section, Evaluation & Monitoring Programmes, Pavement Design & Construction Methods; Development of Special Specifications, Presentation & Reporting; Methods Design; Overall Technical Approach Coordination & Supervision; Overall Organization of Study
26
Su
pp
or
t S
taff
Le
ve
l 1
SS1-1 Assistant Research Engineer Eng. Fred Sirmoi Wekesa
Research in Construction Methods Testing, Research in Mechanically & Chemically Stabilized Geomaterials including Geosynthetically Reinforced Materials; Geosynthetic Types & Sources; Performance Specifications; Sourcing & Availability Expert; Design Manuals & Specifications
3 7.48
Pr
ofe
ss
ion
al
Sta
ff
Kihuha Waweru Ng'ang'a
Soil-Structural-Reinforcement Elements Research & Structural Matrix Analysis; Development of Quality Control Systems; Geometric Design & Characteristics; Geosynthetics Performance & Characteristics; Geotechnical Engineering Research & Literature Review; Impact of Materials on Environmental Impact assessment
18 5.14
PS4 Senior Materials Technologist Ogallo J.B. Julius
Construction Methods Testing, Research in Mechanically & Chemically Stabilized Geomaterials including Geosynthetically Reinforced Materials; Calibration & Verification of Equipment; Evaluation & Monitoring of Field/ Laboratory Testing; Quality Control; Implementation of Lab/ Field Testing Regimes
20
PS3 Research Scientist
6.53
6.97
SS2-3Mechanical Engineer (Instrument. & Equip.)
Eng. Alphonse MuthokaDesign and Modification of Field/ Laboratory Testing Equipment & Instrumentation; Evaluation of Field/ Laboratory Testing Equipment & Instrumentation Performance & Monitoring
17
7.99
Su
pp
or
t S
taff
Le
ve
l 2
SS2-1 Senior Engineering Geologist Kihuha Waweru Ng'ang'aGeological Engineering Analysis and Site Characterization; Material Types & Sources; Hydrological Analysis, Drainage Characteristics; Field Activities & Tasks
30 3.66
SS2-2
SS1-2 Senior Geoscientist Joram Okado MukabiGeophysical & Geomathematical Analysis of In-situ Strata, Geomaterials & Soil~Geosynthetics Interaction, Local & Global Characteristics; Suitability Testing; Performance Evaluation; Quality Control & Monitoring
17
Systems Analyst/ ICT Specialist Sylvester Kotheki
Specialist in Engineering/ Management/ Field/ Office Information & Communication Technology & Design Applications; Expert in Engineering Systems, Intelligence, GIS/Geomatics, Modeling/3D; Industrial Design Knowledgebase; Technological & Computer Science Advisory
6.46
Site Engineer Eng. Julius MosariaConstruction Implementation of Geosynthetics Reinforced Materials/ Layers; Monitoring & Environmental Impact Assessment; Structural Analysis; Condition Survey & Scoping Inventory; Post Test Structural Repairs
3 5.78
25.00
15.47
34.73
Sta
ffin
g L
ev
el
TOTAL M/Months 75.20 75.20
5.78
To
tal
M/
Mo
nth
s
by
Le
ve
l
SS2-6 CAD/ Field Test/ Instrumentation Expert Leonard Ngigi Mechanical Field Testing Equipment and Instrumentation. CAD Operations 18
SS2-5 Materials Tehnologist Kenneth Githuga WambuguGeotechnical Investigation, Materials Testing, Field and Laboratory Testing Techniques - Research Regime Interpretation & Implementation; Innovation of Field/ laboratory Testing Equipment; Field Activities
20 6.93
6.12
SS2-4 22
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6.4 Summary of Staffing Task assignment
A summary of the Staffing Task Assignment is provided in Table 5.3 under Section 5.3 (sub-section) of Chapter 5.
6.5 Proposed Staff Assignment Schedule
The Consultant’s proposed Staff Assignment Schedule is presented in Figure 6.3 below.
Figure 6.3 Proposed Professional Staff (PS)/ Support Staff (SS) Assignment Schedule
Year
Month
Week
Notes: 1. Assignment Schedule is subject to change depending on prevailing circumstances, progress of Study and necessity of Experts 75.20
Assignment in Nairobi/Laboratory
Assignment on Site/Field
Intermitent Assignment
Preliminary/Other
SUPP
OR
T S
TA
FF:L
EVEL
2
TOTAL M/Months
PS2
PS3
PS4
PRO
FESS
ION
AL
STA
FFSU
PP
OR
T
STA
FF:L
EVEL
1
Staff Name
Eng. Dr. John Mukabi
Eng. Kabbia Njoroge
Kihuha Ng'ang'a
Ogalo Julius
2128
1
7 14 21 28
2
7 14 21 28 21 28
6.36
28 7 14 21 147 14 21 28 721 28
6.93
28 7 14
SS2-3Mechanical Engineer (Instrument & Equip)
Senior Materials Technologist
Senior Engineering Geologist
SS2-1
Research Scientist
7 14 21
6.12
SS2-2 Site Engineer 5.78Eng. Julius Mosaria
Eng. Alphonse Muthoka
SS2-6CAD/Field
Test/Instrumentation Expert5.78
SS2-4Systems Analyst/ICT Specialist
6.46
SS2-5 Materials Technologist
Sylvester Kotheki
Kenneth Wambugu
Leonard Ngigi
3.66
SS1-2 Senior Geoscientist 7.99
6.53
SS1-1Assistant Research Engineer
7.48Eng. Sirmoi Wekesa
Joram Okado Mukabi
Kihuha Ng'ang'a
PS1
Inde
x
Position/ Task
Tot
al
M/M
onth
s2011 - 2012
7 14
5 6 7 8 93 4
7 14
5.14
Geotechnical Engineer/Team Leader
6.97
Highway/Materials Engineer
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Chapter 7 Overview of Key Personnel
7.1 Curriculum Vitae (CV) for Proposed Professional Staff
Curriculum Vitae (CV) for Lead Consultant
1. Proposed Position: Lead Consultant
2. Name of Firm: Kensetsu Kaihatsu Limited
3. Name of Staff: John Ngaya MUKABI
4. Date of Birth: 12th September 1959 Nationality: Kenyan
5. Education:
Ph.D in Geotechnical Engineering, Post Graduate School of Civil Engineering, The University of
Tokyo, Japan – April 1991 ~ March 1995
MSc. in Geotechnical Engineering, Post Graduate School of Civil Engineering, The University of
Tokyo, Japan – April 1989 ~ March 1991
BSc. (Hons) in Civil Engineering, Department of Civil & Marine Engineering, Yokohama
National University, Japan - April 1985 ~ March 1989
6. Membership of Professional Associations:
MISSMGE (MEMBER OF THE INTERNATIONAL SOCIETY OF SOIL MECHANICS AND GEOTECHNICAL
ENGINEERING)
MAIPE (MEMBER ADVISOR OF THE INTERNATIONAL PANEL OF ENGINEERS)
MEGEP (MEMBER OF THE SPECIAL RESEARCH AND EXECUTIVE WORKING GROUP OF THE EUROPEAN
GEOGRIDS EXPERTS PANEL)
MASCE ( MEMBER OF THE AMERICAN SOCIETY OF CIVIL ENGINEERS)
MTCISSMGE (MEMBER OF THE TECHNICAL COMMITTEE OF THE INTERNATIONAL SOCIETY OF SOIL
MECHANICS AND GEOTECHNICAL ENGINEERING)
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MRCARSSMGE (MEMBER OF THE RESEARCH COMMITTEE OF THE AFRICAN REGION - INTERNATIONAL
SOCIETY OF SOIL MECHANICS AND GEOTECHNICAL ENGINEERING)
MIAEG (MEMBER OF THE INTERNATIONAL ASSOCIATION OF ENGINEERING GEOLOGY)
CMWRA (CORPORATE MEMBER OF THE WORLD ROAD ASSOCIATION)
CMWRF (CORPORATE MEMBER OF THE WORLD ROAD FEDERATION)
MJGS (MEMBER OF THE JAPAN GEOTECHNICAL SOCIETY)
MJSCE (MEMBER OF THE JAPAN SOCIETY OF CIVIL ENGINEERS)
MCKGS (FOUNDER MEMBER AND PRESIDENT OF THE KENYA GEOTECHNICAL SOCIETY)
MAFACE (MEMBER ADVISOR TO THE ETHIOPIAN ASSOCIATION OF CIVIL ENGINEERS)
PRMWASET (PEER REVIEW MEMBER OF WORLD ACADEMY OF SCIENCE, ENGINEERING AND
TECHNOLOGY)
MIEEE (MEMBER OF THE INTERNATIONAL ELECTRICAL AND ELECTRONICS ENGINEERING
ASSOCIATION)
MIECE (MEMBER OF THE INTERNATIONAL INSTITUTION OF CIVIL ENGINEERS)
7. Other Training:
Project Development and Master Planning – Projecting The Yokohama Minato Mirai (MM21)
21st Century Futuristic City Development Project, The Yokohama City Development Authority,
Japan, August 1989 ~ August 1989.
Developing Models for Systematic Urban Planning and Development, State Development
Authority, Denver, USA, May 1989 ~ May 1989.
Design & Construction Utilizing New Materials in Civil Engineering Adoption of Fly Ash as a
Land Reclamation Material, Kansai Electric Power, Japan, September 1989 ~ September 1989.
Research & Development in Shield Tunneling, Under Sea Tunneling for the Tokyo Bay Project,
The Trans-Tokyo Bay Highway Corporation, Ministry of Construction, Japan, March 1990 ~
April 1990.
Transport Infrastructure and Urbanization, Hong Kong City Development Authority, Hong
Kong, June 1990 ~ June 1990.
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Contract Administration in Civil Engineering Practice, The Honshu Shikoku Bridge Authority,
Government of Japan, June 1990 ~ September 1990.
Research Orientation, Development and Benefits in Geotechnical Engineering, The Port &
Harbour Research Institute, Ministry of Transport, Japan, June 1991 ~ August 1991.
Enhancing Research on the Development of Geotechnical Engineering Aspects of Man-made
Islands and Land Reclamation, The New Kansai International Airport, The Port & Harbour
Research Institute, Ministry of Transport, Japan, July 1992 ~ August 1992.
Modeling Geotechnical Engineering and Geological Problems in Offshore Ground Settlement,
The New Kansai International Airport, Osaka City Authority and The Port & Harbour Research
Institute, Ministry of Transport, Japan, March 1993 ~ April 1993.
Flood Control within Urbanized Developments, The Kandagawa Flood Control Project, Taisei
Corporation, Japan, July 1993 ~ July 1993.
Developing Ground Improvement Aspects in Geotechnical Engineering, Ground Improvement
in Ariake, Kyushuu for Rail Road Design and Construction, Ariake Geotechnical Research
Group, Kyushuu Prefecture, Japan, March 1994 ~ April 1994
Project Management Practice in Civil Engineering, the Japan International Cooperation
Agency (JICA), Government of Japan, June 1994 ~ August 1994.
Disaster Mitigation in Civil Engineering, Reconstruction Planning in Kobe City due the
Structural Damage caused by the Great Kansai Earthquake, KOBENET, Kobe Prefecture,
Japan, March 1995 ~ March 1995.
8. Countries of Work Experience: Particularly in Ethiopia, South Sudan, Tanzania, Uganda, Rwanda,
Burundi, South Africa, Mozambique, Kenya and the European, African and Asian Regions in general.
9. Languages: English, Japanese, Kiswahili and Native Language
10. Employment Record:
S/N Employer Year Positions Held
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From To
1. Kensetsu Kaihatsu Limited 2004 to date CEO/Chief Technical Advisor (CTA)
2. Katahira & Engineers International 2005 2007 Asst. Managing Director, Africa Region/CTA
3. Createch Construction & Management Consultants
2003 2006 Chairman
4. Construction Project Consultants Inc. 1998 2004 Asst. General Manager/Projects
Manager and CTA, East & Central African Region
5. Mpata Investments Limited 1995 1998 Managing Director 6. Mpata International, Japan 1995 2000 Chairman’s Rep. for
Africa Region
11. Detailed Tasks
Assigned:
Management of all Tasks in
general; and,
Liaison with Chief
Engineer (Materials)
Advancing Research in
Geomaterials,
Geosynthetics & RE
Geostructures
Design of Research &
Testing Regimes
Design of Trial sections
Development of
Evaluation and
Monitoring Procedures,
Systems and Programmes
12. Work Undertaken that Best Illustrates Capability to Handle the Tasks:
(1) Name of Assignment or Project: Reconstruction of Original Pavements of Isiolo Airport Year: October 2010 ~ On going Location: Isiolo/Meru Counties, Eastern State Client: Kenya Airports Authority, Ministry of Transport Main Features: Geotechnical Engineering Investigation, Hydro-geological Study, Basic & Detailed Design Studies, Design of Trial Sections, Design of Geosynthetics Reinforced Pavement Structures, Position(s) Held: Lead Consultant/Chief Technical Advisor/Project Director Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design, Led and Supervised Study Team
(2) Name of Assignment or Project: White Nile Oil Exploration Project in Southern Sudan
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Development of
Appropriate and Unique
Design Procedures,
Methods of Construction
and Quality Control
Systems
Development of Special
Specifications
Overall Technical
Approach, Coordination
and Implementation
Methodology
Overall Organization of
Study
Overall Presentation and
Reporting
Year: March 2007 ~ November 2007 Location: Jonglei Flood Plains, Southern Sudan Client: White Nile Oil Exploration Corporation and the Government of Southern Sudan Main Features: Project Conceptualization, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Design of Geosynthetics Reinforced Pad Foundations for Oil Drilling Rigs, Embankments and Pavement Structures for Access Roads & Airstrip Position(s) Held: Lead Consultant/Chief Technical Advisor/Project Director Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Countermeasures to Lack of Suitable Road Construction Materials, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design, Led and Supervised Study Team (3) Name of Assignment or Project: Design of Reinforced Earth Structures with Slope Protection Applying the Terre Armee Method for the Tana Basin Development Project – Phase II Year: June 2000 ~ November 2000 Location: Malindi ~ Garissa, Kenya Client: Japan Bank of International Cooperation (JBIC)/Office of the President, Government of Kenya Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Terre Armee Earth Reinforcement Method, Design of Trial Sections, Design of Reinforced Earth Embanked Structures and Reinforced Earth Bridge Abutments, Construction Supervision Position(s) Held: Lead Consultant/Chief Geotechnical & Highway Engineer Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures for , Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Reinforced Earth Embanked Structures and Reinforced Earth Bridge Abutments
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(4) Name of Assignment or Project: Juba River Port Access Road Detailed Design and Construction Supervision Project Year: October 2006 ~ September 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency through Katahira & Engineers International/Urban Tone Cooperation Main Features: Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Position(s) Held: Lead Consultant/Chief Technical Advisor/Project Director Activities Performed: Overall Project Management, Detailed Design Study and Construction Supervision, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Countermeasures to Lack of Suitable Road Construction Materials, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(5) Name of Assignment or Project: Emergency Study on Planning and Support for Basic Physical and Social Infrastructure in Juba Town and the Surrounding Areas Year: January 2006 ~ March 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency (JICA), Government of Japan Main Features: Feasibility Studies on Physical Infrastructure, Water Supply and Community Based Development, Development of River Port, Road Pavement and Water Supply Pilot Projects, Establishing Juba City Development Strategy and Master Plan, Preparation of Maintenance Plan for the Pilot Projects Position(s) Held: Chief Technical Advisor/Chief Project Coordnator/Research Team Leader/Chief Materials Pavement & Geotechnical Engineer Activities Performed: Responsible for Advising and Assisting Project Team Leader, Led the Research & Development Team, Designed the Methodologies, Work Plans and Implementation
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Programmes of the Project
(6) Name of Assignment or Project: Consultancy Work Supervision of Emergency Road Repairs in Southern Sudan – Phase 3, Wau ~ Abyei Road, Causeway & Bridge Project Year: November 2006 ~ July 2007 Location: Juba City, Southern Sudan Client: UN –World Food Programme (WFP) Main Features: Feasibility Study, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Position(s) Held: Lead Consultant, Project Manager/Chief Materials, Pavement & Highway Engineer/Research Team Leader Activities Performed: Overall Project Management, Detailed Design Study and Construction Supervision, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Countermeasures to Lack of Suitable Road Construction Materials, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(7) Name of Assignment or Project: Detailed Engineering Design and Construction Supervision of the Addis Ababa ~ Goha Tsion Trunk Road Project – Phases II - IV Year: December 2002 ~ March 2005 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia Main Features: Detailed Design Study and Construction Supervision Position(s) Held: Research Team Leader/Chief Technical Advisor/Resident Engineer/Chief Geotechnical & Highway Engineer Activities Performed: Overall Contract Administration and Project Management, Detailed Design Study and Construction Supervision, Innovation of Unique Engineering Solutions for
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Problematic Black Cotton Soils, Development of Unique Pavement Structural Designs, Research into Cost-effective Countermeasures to Slope Stability, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design and Bridge Foundations (8) Name of Assignment or Project: Study of the Enhancement of Structural Capacity and Serviceability Level of the Addis Ababa ~ Goha Tsion Trunk Road Project Year: March 2003 ~ April 2004 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Enhancement of Serviceability, Structural capacity and Traffic Safety Levels due to Exponential Increase in Oil Transport Traffic Volume Position(s) Held: Lead Geotechnical Engineering and Highway Consultant/Project Director Activities Performed: Developed Innovative Research & Testing Regimes, Established Pragmatic Monitoring & Evaluation Programmes, In-charge of Overall Supervision of the Project and Led the Study Team
(9) Name of Assignment or Project: Post-Construction Project Evaluation and Preparation of Consultancy and Contract Completion Reports for the Addis Ababa Year: January 2005 ~ February 2006 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Engineering and Financial Requirements Position(s) Held: Lead Consultant/Project Director Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic
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Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design, Established Pragmatic Monitoring & Evaluation of Road Pavements, Embankments and Slope Stability
(10) Name of Assignment or Project: Feasibility Study of Engineering Design for the Upgrading and Expansion of the Gimbothaya International Airport and Access Road in Bahir Dar Year: May 2004 ~ September 2004 Location: Bahir Dar, Ethiopia Client: Office of the Prime Minister, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Engineering and Financial Requirements Position(s) Held: Lead Consultant/Project Director Activities Performed: Developed Innovative Research & Testing Regimes, In-charge of Overall Supervision of the Project and Led the Study Team
(11) Name of Assignment or Project: Feasibility Study and Preliminary Engineering Design of the Upgrading project of the Holeta ~ Muger Road Year: May 2004 ~ February 2005 Location: Nekemta, Ambo, Ethiopia Client: Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Engineering and Financial Requirements Position(s) Held: Lead Consultant/Project Director Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design, Established Pragmatic Monitoring & Evaluation of Road Pavements, Embankments and Slope Stability
(12)
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Name of Assignment or Project: Ntare ~ Ruhatsi Boulevard Project for Pavement Rehabilitation on City Roads, Bujumbura Year: September 2007 ~ May 2008 Location: Bujumbura, Burundi Client: Japan International Cooperation Agency, Government of Japan, Ministry of Roads, Government of the Republic of Burundi Main Features: Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision Position(s) Held: Lead Consultant/Project Director Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(13) Name of Assignment or Project: Mbeya ~ Lwanjilo-Makongolosi Trunk Road Rehabilitation and Upgrading Project Year: April 2008 ~ February 2009 Location: Mbeya, Tanzania Client: Tanzania Roads Authority (TANROADS), Government of the United of Tanzania Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision Position(s) Held: Lead Consultant/Chief Geotechnical Engineer Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(14)
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Name of Assignment or Project: Construction of Songwe Airport Pavements and Buildings in Mbeya Year: April 2008 ~ February 2009 Location: Mbeya, Tanzania Client: BADEA and OPEC/Tanzania Airports Authority, Government of the United of Tanzania Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Design of Trial Sections, Design of Pavement Structures, Construction Supervision Position(s) Held: Lead Consultant/Chief Geotechnical Engineer Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(15) Name of Assignment or Project: Emergency Rehabilitation Works in Juba (ERW) – Construction, Rehabilitation and Upgrading of LOT 1 Roads in Juba, Southern Sudan Year: October 2008 ~ August 2009 Location: Juba, Southern Sudan Client: World Bank/Ministry of Roads & Bridges, Government of Southern Sudan Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision Position(s) Held: Lead Consultant/Chief Geotechnical & Highway Engineer Activities Performed: Developed and Designed Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems, Innovation of Unique Engineering Solutions for Problematic Soils, Development of Research Based Value Engineering Methods for Enhanced Pavement Structural Design
(16) Name of Assignment or Project: The Trans-Tokyo Bay
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Highway Development Project Year: March 1989 ~ March 1991 Location: Tokyo ~ Chiba, Japan Client: Ministry of Construction, Government of Japan Main Features: Construction of Man-made Islands, Bridges and Under-sea Tunnels Position(s) Held: Geotechnical Engineering Research Assistant Activities Performed: Assisted in the Development and Design of Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems
(17) Name of Assignment or Project: Ground Improvement in Ariake, Kyushuu for Rail Road Construction Year: June 1994 ~ March 1995 Location: Ariake, Kyushuu Prefecture, Japan Client: Ministry of Construction, Government of Japan Main Features: Ground Improvement Design and Construction Position(s) Held: Geotechnical Engineering Research Assistant Activities Performed: Assisted in the Development and Design of Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems
(18) Name of Assignment or Project: The Kandagawa Flood Control Project Year: April 1993 ~ March 1995 Location: Suginami Ward , Tokyo, Japan Client: Ministry of Construction, Government of Japan Main Features: Design and Construction of Large Shaft to Drain Water and Control Flooding Position(s) Held: Geotechnical Engineering Research Assistant Activities Performed: Assisted in the Development and Design of Unique Research & Testing Regimes, Appropriate
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Design Procedures, Methods of Construction and Quality Control Systems
(19) Name of Assignment or Project: Water Front Development, Reclamation and Ground Settlement Associated Problems of the New Kansai International Airport Year: June 1991 ~ June 1994 Location: Osaka , Japan Client: The Port and Harbour Research Institute, Ministry of Transport, Government of Japan Main Features: Development of Appropriate Geotechnical Engineering Solutions Position(s) Held: Geotechnical Engineering Research Assistant Activities Performed: Assisted in the Development of Value Engineering Based Countermeasures and Geotechnical Engineering Solutions, and Design of Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems (20) Name of Assignment or Project: The OAP ( Osaka Amenity Park) Project for Skyscraper Buildings, Infrastructure & Amenity Parks Year: April 1992 ~ March 1995 Location: Osaka , Japan Client: Osaka City Authority, Ministry of Local Government, Government of Japan Main Features: Development of Appropriate Geotechnical Engineering Solutions for Foundation and Pavement Design and Construction Position(s) Held: Geotechnical Engineering Research Assistant Activities Performed: Assisted in the Development of Value Engineering Based Geotechnical Engineering Solutions, and Design of Unique Research & Testing Regimes, Appropriate Design Procedures, Methods of Construction and Quality Control Systems
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13. Certification:
I, the undersigned, certify that to the best of my knowledge and belief, this CV correctly describes
myself, my qualifications, and my experience. I understand that any willful misstatement described
herein may lead to my disqualification or dismissal, if engaged.
Date: 5th/December/2011 Day/Month/Year
Full name of authorized representative: Dr. Eng. John Ngaya Mukabi
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Curriculum Vitae (CV) for Highways/Materials Engineer
14. Proposed Position: Highways/Materials Engineer
15. Name of Firm: Kensetsu Kaihatsu Limited
16. Name of Staff: Petterson Njoroge KABBIA
17. Date of Birth: 31st August 1955 Nationality: Kenyan
18. Education:
BSc. in Civil Engineering, Department of Civil Engineering, University of Nairobi, – December,
1979
19. Membership of Professional Associations:
REGISTEREDGRADUATE ENGINEER (ENGINEERS REGISTRATION BOARD)
MCKGS (MEMBER OF THE KENYA GEOTECHNICAL SOCIETY)
MIEK (MEMBER OF THE INSTITUTION OF ENGINEERS OF KENYA)
20. Other Training:
Geotechnical Site Investigation and Testing Materials Testing and Research Department
(MTRD), Nairobi, Kenya, 1989.
Asphalt Testing and Design for Roads and Airports Pavement; New Testing Methods and
Equipment for Longer Lasting Pavements, MTRD, Nairobi, Kenya, 1994.
21. Countries of Work Experience: Kenya, South Sudan, Tanzania, Burundi.
22. Languages: English, Kiswahili and Native Language
23. Employment Record:
S/N Employer Year
From To
Positions Held
1. Pepea Company Limited 2008 to date Director
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2. Kensetsu Kaihatsu Limited 2006 to date Highways/Materials and Construction Consulting
Engineer 3.. Kirinyaga Construction (K) Ltd 2005 2008 Site Agent
4. S.S Mehta & Sons 2001 2005 Site Agent
4. DMK Construction 1997 1999 Site Agent
5. Mpata Investments Limited 1992 1995 Maintenance & Procurement Manager
6. Diamond Construction (K) Ltd. 1984 1992 Site Agent
7. Ngangaige Enterprises Building and Civil Engineering Contractors
1983 1984 Design & Supervision Engineer
8. Mowlem Construction Co. Ltd 1979 1983 Section Engineer
24. Detailed Tasks
Assigned:
Management of Pavements,
Materials and Construction
Related Tasks in general;
and,
Pavement Structural
Design
Assisting in Research in
Geomaterials,
Geosynthetics & RE
Geostructures
Development of Methods
of Construction
Supervision of
Construction of Trial
sections
25. Work Undertaken that Best Illustrates Capability to Handle the Tasks:
(1) Name of Assignment or Project: Reconstruction of Original Pavements of Isiolo Airport Year: October 2010 ~ On going Location: Isiolo/Meru Counties, Eastern State Client: Kenya Airports Authority, Ministry of Transport Main Features: Geotechnical Engineering Investigation, Hydro-geological Study, Basic & Detailed Design Studies, Design of Trial Sections, Design of Geosynthetics Reinforced Pavement Structures, Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control Systems.
(2) Name of Assignment or Project: White Nile Oil Exploration Project in Southern Sudan Year: March 2007 ~ November 2007 Location: Jonglei Flood Plains, Southern Sudan Client: White Nile Oil Exploration Corporation and the
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
100 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Performance Evaluation
and Monitoring of Trial
Sections
Implementation of
Design Procedures,
Methods of Construction
and Quality Control
Systems
Interpretation and
Implementation of
Special Specifications
Government of Southern Sudan Main Features: Project Conceptualization, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Design of Geosynthetics Reinforced Pad Foundations for Oil Drilling Rigs, Embankments and Pavement Structures for Access Roads & Airstrip Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control (3) Name of Assignment or Project: Design of Reinforced Earth Structures with Slope Protection Applying the Terre Armee Method for the Tana Basin Development Project – Phase II Year: June 2000 ~ November 2000 Location: Malindi ~ Garissa, Kenya Client: Japan Bank of International Cooperation (JBIC)/Office of the President, Government of Kenya Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Terre Armee Earth Reinforcement Method, Design of Trial Sections, Design of Reinforced Earth Embanked Structures and Reinforced Earth Bridge Abutments, Construction Supervision Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control (4) Name of Assignment or Project: Juba River Port Access Road Detailed Design and Construction Supervision Project Year: October 2006 ~ September 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency through Katahira & Engineers International/Urban Tone Cooperation Main Features: Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision,
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
101 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Development of Monitoring & Evaluation Programme Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control (5) Name of Assignment or Project: Emergency Study on Planning and Support for Basic Physical and Social Infrastructure in Juba Town and the Surrounding Areas Year: January 2006 ~ March 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency (JICA), Government of Japan Main Features: Feasibility Studies on Physical Infrastructure, Water Supply and Community Based Development, Development of River Port, Road Pavement and Water Supply Pilot Projects, Establishing Juba City Development Strategy and Master Plan, Preparation of Maintenance Plan for the Pilot Projects Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control
(6) Name of Assignment or Project: Consultancy Work Supervision of Emergency Road Repairs in Southern Sudan – Phase 3, Wau ~ Abyei Road, Causeway & Bridge Project Year: November 2006 ~ July 2007 Location: Juba City, Southern Sudan Client: UN –World Food Programme (WFP) Main Features: Feasibility Study, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Position(s) Held: : Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
102 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control (7) Name of Assignment or Project: Detailed Engineering Design and Construction Supervision of the Addis Ababa ~ Goha Tsion Trunk Road Project – Phases II - IV Year: December 2002 ~ March 2005 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia Main Features: Detailed Design Study and Construction Supervision Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control (8) Name of Assignment or Project: Study of the Enhancement of Structural Capacity and Serviceability Level of the Addis Ababa ~ Goha Tsion Trunk Road Project Year: March 2003 ~ April 2004 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Enhancement of Serviceability, Structural capacity and Traffic Safety Levels due to Exponential Increase in Oil Transport Traffic Volume Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control
(9) Name of Assignment or Project: Post-Construction Project Evaluation and Preparation of Consultancy and Contract Completion Reports for the Addis Ababa
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
103 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Year: January 2005 ~ February 2006 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Engineering and Financial Requirements Position(s) Held: Materials and Construction Supervision Engineer Activities Performed: Undertook Research & Materials Testing, Assisted in the Development of Appropriate Design Procedures, Methods of Construction and Quality Control
26. Certification:
I, the undersigned, certify that to the best of my knowledge and belief, this CV correctly describes
myself, my qualifications, and my experience. I understand that any willful misstatement described
herein may lead to my disqualification or dismissal, if engaged.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
104 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Date:
5th/December/2011
Day/Month/Year
Full name of authorized representative: Dr. Eng. John Ngaya Mukabi
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
105 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Curriculum Vitae (CV) for Research Scientist
27. Proposed Position: Research Scientist
28. Name of Firm: Kensetsu Kaihatsu Limited
29. Name of Staff: Kihuha Waweru Nga’ng’a
30. Date of Birth: 20th July 1957 Nationality: Kenyan
31. Education:
MSc. in Engineering Geology, Graduate Society, University of Durham, United Kingdom,
December, 1990
BSc. in Geology, College of Biological and Physical Sciences, University of Nairobi, –
December, 1981
32. Membership of Professional Associations:
REGISTERED GEOLOGIST (GEOLOGIST REGISTRATION BOARD)
MCKGS (MEMBER OF THE KENYA GEOTECHNICAL SOCIETY)
MIEK (MEMBER OF THE GEOLOGICAL SOCIETY OF KENYA)
33. Other Training:
Remote Sensing for Natural Resources Management, RCMRD, Nairobi.
GPS for Data Collection and Mapping, PolyGIS, Kenya Polytechnic, Nairobi.
Proficiency in AutoCAD, PolyCASE, Kenya Polytechnic, Nairobi.
Proficiency in GIS, PolyGIS, Kenya Polytechnic, Nairobi.
34. Countries of Work Experience: United Kingdom, Kenya
35. Languages: English, Kiswahili and Native Language
36. Employment Record:
S/N Employer Year Positions Held
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
106 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
From To
1. BPC & Engineering Services 2005 to date Lead Geotechnical Consultant and
Hydrogeo-physcist 2. Kensetsu Kaihatsu Limited 2006 to date Geological Engineering
Consultant 3. Egerton University 2005 to date Part Time Lecturer
4. Jomo Kenyatta University of Agriculture & Technology
1999 2005 Lecturer in Geology, Soil Mechanics, Foundation
and Geotechnical Engineering
5. Kenya Polytechnic 1989 2001 Senior Lecturer in Soil mechanics and
Foundation Engineering 6. Kenya Polytechnic 1986 1989 Geology, Soil Mechanics
and Foundation Engineering
7. Aqua Field Consultants 1986 to date Principal Consulting Engineering
Geologist/Hydrogeologist
37. Detailed Tasks
Assigned:
Scientific Analysis of
Geomaterials, Geosynthetic-
Soil Particle Characterization
Related Tasks in general;
and,
Composite Pavement
Structural Analysis
Assisting in Research in
Geomaterials,
Geosynthetics & RE
38. Work Undertaken that Best Illustrates Capability to Handle the Tasks:
(1) Name of Assignment or Project: Reconstruction of Original Pavements of Isiolo Airport Year: October 2010 ~ On going Location: Isiolo/Meru Counties, Eastern State Client: Kenya Airports Authority, Ministry of Transport Main Features: Geotechnical Engineering Investigation, Hydro-geological Study, Basic & Detailed Design Studies, Design of Trial Sections, Design of Geosynthetics Reinforced Pavement Structures, Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological &
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
107 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Geostructures
Development of Scientific
Theories and Geo-
engineering Concepts of
Soil Particle-
Geosynthetics Interaction
Environmental Impact Assessment
(2) Name of Assignment or Project: White Nile Oil Exploration Project in Southern Sudan Year: March 2007 ~ November 2007 Location: Jonglei Flood Plains, Southern Sudan Client: White Nile Oil Exploration Corporation and the Government of Southern Sudan Main Features: Project Conceptualization, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Design of Geosynthetics Reinforced Pad Foundations for Oil Drilling Rigs, Embankments and Pavement Structures for Access Roads & Airstrip Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment (3) Name of Assignment or Project: Design of Reinforced Earth Structures with Slope Protection Applying the Terre Armee Method for the Tana Basin Development Project – Phase II Year: June 2000 ~ November 2000 Location: Malindi ~ Garissa, Kenya Client: Japan Bank of International Cooperation (JBIC)/Office of the President, Government of Kenya Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Terre Armee Earth Reinforcement Method, Design of Trial Sections, Design of Reinforced Earth Embanked Structures and Reinforced Earth Bridge Abutments, Construction Supervision Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment (4)
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
108 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Name of Assignment or Project: Juba River Port Access Road Detailed Design and Construction Supervision Project Year: October 2006 ~ September 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency through Katahira & Engineers International/Urban Tone Cooperation Main Features: Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment (5) Name of Assignment or Project: Emergency Study on Planning and Support for Basic Physical and Social Infrastructure in Juba Town and the Surrounding Areas Year: January 2006 ~ March 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency (JICA), Government of Japan Main Features: Feasibility Studies on Physical Infrastructure, Water Supply and Community Based Development, Development of River Port, Road Pavement and Water Supply Pilot Projects, Establishing Juba City Development Strategy and Master Plan, Preparation of Maintenance Plan for the Pilot Projects Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment
(6) Name of Assignment or Project: Consultancy Work Supervision of Emergency Road Repairs in Southern Sudan – Phase 3, Wau ~ Abyei Road, Causeway & Bridge Project
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
109 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Year: November 2006 ~ July 2007 Location: Juba City, Southern Sudan Client: UN –World Food Programme (WFP) Main Features: Feasibility Study, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Position(s) Held: : Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment (7) Name of Assignment or Project: Detailed Engineering Design and Construction Supervision of the Addis Ababa ~ Goha Tsion Trunk Road Project – Phases II - IV Year: December 2002 ~ March 2005 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia Main Features: Detailed Design Study and Construction Supervision Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment (8) Name of Assignment or Project: Study of the Enhancement of Structural Capacity and Serviceability Level of the Addis Ababa ~ Goha Tsion Trunk Road Project Year: March 2003 ~ April 2004 Location: North Western Corridor, Ethiopia
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
110 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Enhancement of Serviceability, Structural capacity and Traffic Safety Levels due to Exponential Increase in Oil Transport Traffic Volume Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment
(9) Name of Assignment or Project: Post-Construction Project Evaluation and Preparation of Consultancy and Contract Completion Reports for the Addis Ababa Year: January 2005 ~ February 2006 Location: North Western Corridor, Ethiopia Client: Japan International Cooperation Agency, Government of Japan/Ethiopian Roads Authority, Government of the Republic of Ethiopia/Kajima Corporation, Japan Main Features: Detailed and Comprehensive Study on the Engineering and Financial Requirements Position(s) Held: Research Scientist & Engineering Geologist Activities Performed: Undertook Research in Geomaterials, Geological Science and Formation, Soil Mechanics Analysis, Geophysical and Geomathematical Analysis of In-situ Strata, Pavement Structural Analysis and Hydrogeological & Environmental Impact Assessment
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
111 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
39. Certification:
I, the undersigned, certify that to the best of my knowledge and belief, this CV correctly describes
myself, my qualifications, and my experience. I understand that any willful misstatement described
herein may lead to my disqualification or dismissal, if engaged.
Date: 5th/December/2011 Day/Month/Year
Full name of authorized representative: Dr. Eng. John Ngaya Mukabi
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
112 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Curriculum Vitae (CV) for Senior Materials Technologist
1. Proposed Position: Senior Materials Technologist
2. Name of Firm: Kensetsu Kaihatsu Limited
3. Name of Staff: Julius J.B. Ogalo
4. Date of Birth: 25th December 1958 Nationality: Kenyan
5. Education:
HDip. in Construction (Highway Engineering), Mombasa Polytechnic, 1989 ~ 1991.
ODip. in Civil Engineering, Kenya Polytechnic, 1980 ~ 1984
6. Membership of Professional Associations:
Registered Graduate Technician Engineer (Reg. No. C714), Engineers Registration Board
(ERB), Kenya.
MKGS (Member of the Kenya Geotechnical Society)
7. Other Training:
Geotechnical Site Investigation and Testing Materials Testing and Research Department
(MTRD), Nairobi, Kenya, 1989.
Asphalt Testing and Design for Roads and Airports Pavement; New Testing Methods and
Equipment for Longer Lasting Pavements, MTRD, Nairobi, Kenya, 1994.
Computer Aided Design (CAD) software for Gotechnical modeling – Seepage Analysis and
Slope Stability, University of Nairobi, Kenya, 1998
8. Countries of Work Experience: Kenya, Rwanda, Zambia and Zanzibar
9. Languages: English, Kiswahili and Native Language
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
113 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
10. Employment Record:
S/N Employer Year
From To
Positions Held
1. University of Nairobi, Department of Civil
& Construction Engineering
2007 to date Chief Technologist
2. Kensetsu Kaihatsu Limited 2007 to date Chief Materials
Technological Consultant
3. Cas Consultants 2005 2007 Snr. Materials Technologist
4. China Wu Yi 2005 2005 Snr. Materials Technologist
5. Apec Consultants 2004 2004 Snr. Materials Technologist
6. Ministry of Local Government 1998 2004 Snr. Materials Technologist
7. Ministry of Roads & Public Works,
Materials Testing & Research Department
1994 1998 Materials Technologist
8. Transport & Road Research Laboratories,
TRRL (UK) and Norwegian Road
Research Laboratories (NRL)
1987 1988 Materials Technologist
9. Sir Alexander Gibb and Partner 1985 1987 Materials Technologist
11. Detailed Tasks
Assigned:
Overall Supervision of
Materials Testing,
Instrumentation, Testing
Equipment and Related
Tasks in general; and,
12. Work Undertaken that Best Illustrates Capability to Handle the Tasks:
(1) Name of Assignment or Project: Reconstruction of Original Pavements of Isiolo Airport Year: October 2010 ~ On going Location: Isiolo/Meru Counties, Eastern State Client: Kenya Airports Authority, Ministry of Transport Main Features: Geotechnical Engineering Investigation, Hydro-geological Study, Basic & Detailed Design Studies,
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
114 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Pavement and
Embankment Materials
Testing and Evaluation
Calibration and
Verification of Testing
Equipment and
Instruments
Assisting in Development
of Methods of Testing
Assisting in the
Supervision of
Construction of Trial
sections
Assisting in the
Performance Evaluation
and Monitoring of Trial
Sections
Materials Quality Control
Field Testing and Ground
Geomaterial Assessment
Design of Trial Sections, Design of Geosynthetics Reinforced Pavement Structures, Position(s) Held: Snr. Materials Technologist Activities Performed: Undertook Field and Laboratory Materials Testing, Assisted in Pavement Materials Analysis and Characterization, Calibration and Verification of Testing Equipment and Materials Quality control.
(2) Name of Assignment or Project: White Nile Oil Exploration Project in Southern Sudan Year: March 2007 ~ November 2007 Location: Jonglei Flood Plains, Southern Sudan Client: White Nile Oil Exploration Corporation and the Government of Southern Sudan Main Features: Project Conceptualization, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Design of Geosynthetics Reinforced Pad Foundations for Oil Drilling Rigs, Embankments and Pavement Structures for Access Roads & Airstrip Position(s) Held: Snr. Materials Technologist Activities Performed: Undertook Field and Laboratory Materials Testing, Assisted in Pavement Materials Analysis and Characterization, Calibration and Verification of Testing Equipment, Assisted in Monitoring and Evaluation of the Pavement Structural Performance and Materials Quality control. (3) Name of Assignment or Project: Design of Reinforced Earth Structures with Slope Protection Applying the Terre Armee Method for the Tana Basin Development Project – Phase II Year: June 2000 ~ November 2000 Location: Malindi ~ Garissa, Kenya Client: Japan Bank of International Cooperation (JBIC)/Office of the President, Government of Kenya Main Features: Design Review, Geotechnical Engineering Investigation, Detailed Design Studies, Study Possibility of Application of Terre Armee Earth Reinforcement Method, Design of Trial Sections, Design of Reinforced Earth Embanked Structures and Reinforced Earth Bridge Abutments, Construction Supervision Performed: Undertook Field and Laboratory Materials
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
115 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Testing, Assisted in Pavement Materials Analysis and Characterization, Calibration and Verification of Testing Equipment, Assisted in Monitoring and Evaluation of the Pavement Structural Performance and Materials Quality control. (4) Name of Assignment or Project: Juba River Port Access Road Detailed Design and Construction Supervision Project Year: October 2006 ~ September 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency through Katahira & Engineers International/Urban Tone Cooperation Main Features: Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Performed: Undertook Field and Laboratory Materials Testing, Assisted in Pavement Materials Analysis and Characterization, Calibration and Verification of Testing Equipment, Assisted in Monitoring and Evaluation of the Pavement Structural Performance and Materials Quality control. (5) Name of Assignment or Project: Emergency Study on Planning and Support for Basic Physical and Social Infrastructure in Juba Town and the Surrounding Areas Year: January 2006 ~ March 2007 Location: Juba City, Southern Sudan Client: Japan International Cooperation Agency (JICA), Government of Japan Main Features: Feasibility Studies on Physical Infrastructure, Water Supply and Community Based Development, Development of River Port, Road Pavement and Water Supply Pilot Projects, Establishing Juba City Development Strategy and Master Plan, Preparation of Maintenance Plan for the Pilot Projects Performed: Undertook Field and Laboratory Materials Testing, Assisted in Pavement Materials Analysis and Characterization, Calibration and Verification of Testing Equipment, Assisted in Monitoring and Evaluation of the
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
116 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Pavement Structural Performance and Materials Quality control.
(6) Name of Assignment or Project: Consultancy Work Supervision of Emergency Road Repairs in Southern Sudan – Phase 3, Wau ~ Abyei Road, Causeway & Bridge Project Year: November 2006 ~ July 2007 Location: Juba City, Southern Sudan Client: UN –World Food Programme (WFP) Main Features: Feasibility Study, Geotechnical Engineering Investigation, Basic & Detailed Design Studies, Study Possibility of Application of Geosynthetics Reinforcement, Design of Trial Sections, Design of Pavement Structures, Construction Supervision, Development of Monitoring & Evaluation Programme Performed: Field and Laboratory Materials Testing.
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
117 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Attachments A1 Vital Documents
A1.1 Certified Copy of Consultant’s Company Certificate of Incorporation
A1.2 Certified Copy of Current Tax Compliance Certificate
A1.3 Current Workload
A1.4 Certified Copies of Certificates and Testimonials of Proposed Key Staff
A2 Key Correspondence and Tender Notice No. 1
A2.1 Key Correspondence
A2.2 Tender Notice No.1
A3 Reference Spread Sheets for Some Figures and Tables
A3.1 Figure 4.1 Consultant’s Interlinking Matrix Approach
A3.2 Figure 4.2 Overall Approach and Methodology for Achieving Objectives
A3.3 Table 5.3 Tasks Breakdown, Mode of Implementation and Personnel Tasks Assignment
A3.4 Figure 5.1 Proposed Tasks Management System and Implementation Arrangement
A3.5 Figure 5.3 Implementation Arrangement by Tasks
A3.6 Figure 6.3 Proposed Professional Staff and Support Staff Assignment Schedule
A4 Example of Method of Geosynthetically Reinforced Pavement Structural Design (4.6.6)
A5 Example of Methods of Construction (4.6.7)
A6 Example of Innovatively Developed Quality Control Procedures (4.6.8)
A7 Example of Performance Monitoring & Evaluation (4.7)
A8 Example of Development of Monitoring and Evaluation Systems and Programmes (4.7.4)
A9 Example of Consultant’s Experience in Design of Geosynthetically Reinforced Geostructures
A10 Capacity Building (4.12)
A11 Environmental Impact (4.12)
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
118 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A1 Vital Documents
A1.1 Certified Copy of Consultant’s Company Certificate of Incorporation
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
119 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
120 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A1 Vital Documents
A1.2 Certified Copy of Current Tax Compliance Certificate
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
121 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
122 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A1 Vital Documents
A1.3 Current Workload
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
123 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
1. Completed in February 2011, the Engineering study, Basic & Detailed Design
and Method of Construction including supervision for the reconstruction and
Rehabilitation of Gisambai ~ Mbale Road in Vihiga District
2. Completed 90% of the Rehabilitation/Reconstruction of selected roads and
storm water drains in Bomet Township and Erection of street lighting currently on-
going; to be completed by January 2012.
3. Completed the Engineering Study, Basic and Detailed Design for the
Reconstruction of Isiolo Airport Runway in Isiolo Town, Meru County of Eastern
Province in Kenya. Projected completion date; May 2012.
December 1, 2011
[Development Of Construction & Performance Specifications For
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A1 Vital Documents
A1.4 Certified Copies of Certificates and Testimonials of the Proposed Key Staff
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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Enclosures:
1. CERTIFICATE OF INCORPORATION OF KENSETSU KAIHATSU LIMITED.
2. TAX COMPLIANCE CERTIFICATE FOR KENSETSU KAIHATSU LIMITED.
3. TESTIMONIALS FOR PROFESSIONAL AND KEY SUPPORT STAFF.
4. REQUEST FOR PROPOSAL
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
129 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
130 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
131 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
133 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
134 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
135 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
136 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
137 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
138 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
139 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
140 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
141 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A2 Key Correspondence and Tender Notice No. 1
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A2.1 Key Correspondence
December 1, 2011
[Development Of Construction & Performance Specifications For
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
145 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
146 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
ATTACHMENT
A1: COVERING LETTER FOR TENDER NOTICE NO. 1
A. REPHRASE IN SUBJECT MATTER FOR STUDY TOPIC 1
1. Rephrase
Rephrase in the subject matter for Study Topic 1 has been noted accordingly. The change is:
FROM;
DEVELOPMENT OF CONSTRUCTION & PERFORMANCE SPECIFICATIONS FOR GEOSYNTHETICS
REINFORCED MATERIALS FOR ROAD EMBANKMENTS AND PAVEMENTS
TO;
STUDIES ON GEOSYNTHETICS REINFORCED MATERIALS FOR ROAD EMBANKMENTS AND PAVEMENTS
2. Comment
The change is highly appreciated since it gives room for further investigations and studies within the
R&D framework as the Objectives are chronologically developed accordingly.
B. FURTHER SUGGESTION
Is it possible to rephrase the terminology GEOSYNTHETICS to GEOSYNTHETICALLY?
December 1, 2011
[Development Of Construction & Performance Specifications For
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A2: APPENDIX 1 – MINUTES OF THE PRE-PROPOSAL CONFERENCE HELD ON 9TH NOVEMBER, 2011 AT 10.00 a.m
AT MATERIALS DEPARTMENT CONFERENCE ROOM
A. AGENDA AND MINUTES
The contents of the Agenda and Minutes have been noted and ratified as the true and correct
proceedings of the PRE-PROPOSAL CONFERENCE HELD ON 9TH NOVEMBER, 2011 AT 10.00 a.m AT
MATERIALS DEPARTMENT CONFERENCE ROOM.
B. RESPONSE TO CLARIFICATION/COMMENTS
It is duly noted that the response to clarification and comments have been made by the Client in
APPENDIX 2 accordingly.
A3: APPENDIX 2 – TENDER ADDENDUM NO. 1
It is duly noted that the Request for Proposals is for Consultancy Services for:
1. Studies on Geosynthetic Reinforced Materials for Road Embankments and Pavements; and,
2. Performance Evaluation of Reinforced Earth Walls (Re-Walls) Along Nairobi - Thika Road (A2)
A. SUGGESTION FOR REPHRASE OF STUDY TOPIC 2
The phrasing of Study Topic 2 can be rather confusing. Is it possible to rephrase it as follows:
Performance Evaluation of Reinforced Earth Geo-structures and Retaining Walls (REG-RWs) Along
Nairobi-Thika Road (A2)
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
148 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Clarification in this form will alleviate any misconceptions and/or misunderstanding and avoid ambiguity
of the Particulars of the Assignment.
Furthermore, the terminology “Geo-structures” ensures that any kind of RE Geotechnical Structures
such as Bridge Abutments, Approach Embankments, etc., are all covered.
B. CHANGES/CLARIFICATIONS IN TENDER ADDENDUM NO. 1
The changes/clarifications that have been made in the RFP and reported in the TENDER ADDENDUM NO.
1 have been noted accordingly and will be incorporated in our response to the RFP to be submitted on
Wednesday, 7th December, 2011 as Technical and Financial Proposals.
C. CLARIFICATION OF CONTENTS IN Form F2: Summary of Costs
We wish to clarify that Total 1 in this Form 2 is the sub-total sum for Activity/Study No. 1 and 2 and that
the blank rows subsequent to the Study Topics, and preceding Total 1 DO NOT imply that contingencies
and V.A.T be charged for the two items as well.
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A2.2 Tender Notice No. 1
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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A3 Reference Spread Sheets for Some Figures and Tables
A3.1 Figure 4.1 Consultant’s Interlinking Matrix Approach
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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TaskApproach
1 2 3 4 5 Reference
1.0
1.1 Client Archives Consultant's Archives Local Archives Regional Archives International Archives RFP/ TOR 3 a) I ~ iv
Garsen ~ Lamu Road
(B8/C112) & Garsen Bridge
Upgrading to dual
carriageway of Thika ~
Makutano Road (A2)
Reconstruction of Eldoret ~
Burnt Forest Road (A104)
Reconstruction of Webuye ~
Malaba Road (A104)
Develop Design Procedures Construction Specifications Quality Control Systems Recommendation on
appropriate Testing
Equipment for Geosynthtic
reinforcement
Develop Design Procedures Construction Specifications Quality Control Systems Further Research &
Recommendations on
Testing Equipment
1.4Masalani Bridge Approaches
500 metres
Likoni ~ Shelly Beach
1 km
Kiserian ~ Isinya Road (D523)
1 km
Sigalagala ~ Butere Road
(D260)
1km
RFP/TOR 3.1 d)
1.5 Eldoret ~ Timboroa Road
(A104)
5km
Eldoret ~ Webuye Road
(A104)
5km
Webuye ~ Malaba Road
(A104)
5km
RFP/ TOR 3.1 e)
1.6Masalani Bridge Approaches
500 metres
Likoni ~ Shelly Beach
1 km
Kiserian ~ Isinya Road (D523)
1 km
Sigalagala ~ Butere Road
(D260)
1km
1.7Eldoret ~ Timboroa Road
(A104) - 5km
5km
Eldoret ~ Webuye Road
(A104) - 5km
5km
Webuye~Malaba Road (A104) Sigalagala ~ Butere Road
(D260) - 1km
1km
Inception Report Draft Report Draft Final Report
•Proposed Methodologies
for Study•Detailed Findings Analysis
•Incorporate Comments
from the Engineer
•Detailed Work
Programme for the
Contract
•Results &
Recommendations
All Supporting Material
•4 Copies •4 Copies •4 Copies
2.0
2.1 Client Archives Consultant's Archives Local Archives Regional Archives International Archives RFP/ TOR 3.2 a)
2.2City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) StructuresRFP/ TOR 3.2 b)
2.3City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) StructuresRFP/ TOR 3.2 c)
2.4City Arterial Connectors
[Lot1] 3 Structures
Muthaiga Roundabout -
Kenyatta University [Lot 2] :
Two (2) Structures
Kenyatta University - Thika
[Lot 3]: Two (2) Structures
RFP/ TOR 3.2 d)
2.5 City Arterial Connectors [Lot1] 3 StructuresMuthaiga Roundabout - Kenyatta University [Lot 2] : Two (2) StructuresKenyatta University - Thika [Lot 3]: Two (2) Structures RFP/ TOR 3.2 e)
Inception Report Draft Report Draft Final Report
•Proposed Methodologies
for Study•Detailed Findings Analysis
•Incorporate Comments
from the Engineer
•Detailed Work
Programme for the
Contract
•Results &
Recommendations
All Supporting Material•4 Copies •4 Copies •4 Copies
Submission of Reports for 2.0 TOR 8 and 9 a ~ d /RFP3.1g2.6 Prepare Final Study Report
1.8 TOR 8 and 9 a ~ d /RFP 3.1g
Workshop for
Stakeholders to Discuss
Draft Final Report
Submission of Reports for 1.0 Prepare Final Study Report
Literature review RE Geostructures
Performance Evaluation of Reinforced Earth (RE) Geo-structures & Retaining Walls along Thika ~ Nairobi Highway (A2)
Studies on Geosynthetically reinforced Materials for road embankments and pavements
RFP/TOR 3.1 c)
RFP/ TOR 3.1 b)
Start
Development of Special Specifications for
Further Trials on Geosynthetically
Reinforced Embankments
Development of Special Specifications for
Further Trials on Geosynthetically
Reinforced DBM/AC
Trial 5 :Findings from 1.4
Trial 6 : Findings from 1.5
Consultation with MTRD and Liason with appropriate Stakeholders
RFP /TOR 3.1 f)
Literature review
Findings from 1.1
Condition surveys1.2
1.3
Findings from 1.2
Examination of Construction
Specifications and Records for RE Walls
Development of Procedures for Testing &
Evaluation of Completed Works,
Settlement on Embankment and Stability
Application of procedures in 2.3 to
Evaluate performance of the RE
Geostructures & Retaining Walls in
relation to the Design Assumptions
Design & Monitoring programme to
inform development of Standard
Construction Speifications
⑥
Structural Evaluation on Geosynthetics Trial sections
Literature review and condition surveys
Thika ~ Nairobi Road (A2)
Geosynthetically Reinforced Embankments
Rehabilitation
Workshop for Stakeholders to
Discuss Draft Final
Report
Reconstruction
December 1, 2011
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& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
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A3.2 Figure 4.2 Overall Approach and Methodology for Achieving Objectives
December 1, 2011
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A3.3 Table 5.3 Tasks Breakdown, Mode of Implementation and Personnel Tasks Assignment
Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
A
•Submit Letter of Acceptance MS • Response Letter
•Prepare Preliminary Documents MS • RFP
•Prepare for Technical & Financial NegotiationsCorres-
pondence
• Technical Proposal
• Financial Proposal
•Review all Technical Documents related to
Assignment for Consultancy Services Library
•Suggested Ammendments
•Project Planning
•Assignment Planning
•Minutes of Meetings
•Confirm Availability of all Professional Staff
Logistics
•Composition of Team
•Structure of Team
•Organization Structure
3 Financial Negotiations ITC 6.3 •Review all Financial Documents related to
Assignment for Consultancy Services
Library
•Suggested Ammendments
•Minutes of the Public
Tender Openning
•Minutes of Negotiations
Meetings
4 Signing of Contract GC 2 •Signing of Contract AgreementAfter
negotiationLogistics
•Standard Forms of Contract
•Binding Contract
B
1 Commencement of Consulting
Services 14 Days after Order to
Commence
Data
Sheet 7.2
•Respond to Commencement Notice 14 days aft.
Order to
Commence
Data
Sheet 7.2
• Order to Commence
• Initiation of Assignment
2
3 Courtesy Calls to Client and Relevant
Stakeholders
Data
Sheet 1.4
b)
•Prepare Introductory Documents
•Initiate Meetings
Within 2
weeks after
Signing of
Contract
MS and
Logistics
•Approval/Facilit. by Client
•Preseentation of Study
Framework to Stakeholders
•Consultative Results
5 Reconnaissance CP Detailed Consultation with Client 4 Weeks Logistics Reconnaissance Results
C
4 TOR 7 a)
and TOR 8
a)
•Organize & set Date & Venue in consultation
with Client •Review Proposed Methodologies
for the Study •Review of Detailed Work
Programme for the Assignment
Within 4
Weeks
after Order
to
Commence
Logistics
&
Technical
Proposal
•Finalization of Inception
Report
•Approval of Study/Work
Programme
•Approval of Methodology
within 2
weeks after
Award of
Contract
ITC 6.2
Technical Negotiations2
Literature Review
Award of Contract1
Mobilization
Preliminaries
ITC 7
Orientation of Available Facilities GC -
Clause
5.3
•Make Inventory of Available Facilities
•Make Inventory of Available Services
•Identify Alternative Facilities and Services
•Consultation with Client on Above
2 Weeks
Logistics
and
Correspo
ndence
•Access to
Facilities/Services
•List of Facilities/Costs
•List of Services/Prices
Inception Meeting
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
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Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
C
1 Scientific & Engineering Theories,
Concepts & Principles of
Geosynthetics Reinforcement
TOR 3a)
7 Days
•Development of Relevant
Fundamental & Applicable
Theories & Concepts
2 Standards & Procedures for Testing
Chemical, Physical & Mechanical
Characteristics of Geosynthetics
TOR 3a)
9 Days
•Identify Shortcomings of
Existing Standards & Design
Manuals
3 Impact of Geometric Design
Characteristics of Geosynthetics
TOR 3a)6 Days
•Design Principles of Testing
& Research Regime
4 Impact of Geosynthetics on the
Environment
TOR 3a)4 Days
•Develop Corrective/
Enhancement Measures
5 Other Relevant Literature TOR 3a) 3 Days
D
1 Garsen ~ Lamu Road (B8/C112) &
Garsen Bridge
TOR 3b)2.5 Weeks Tool 2
2 Upgrading to dual carriageway of
Thika ~ Makutano Road (A2)
TOR 3b)1.5 Weeks Tool 2
3 Reconstruction of Eldoret ~ Burnt
Forest Road (A104)
TOR 3b)1.5 Weeks Tool 4
4 Reconstruction of Webuye ~ Malaba
Road (A104)
TOR 3b)1.5 Weeks Tool 22
E
1 Develop Appropriate Methods of
Testing
4.6.3 •Derive and Analyze Response Factors for
Performance Parameters
•Determine Scale Effect
•Determine Loading and Deformation
•Design Modification Factors
14 Days Tool 4
•Testing Regime Report
•Appropriate Testing
Equipment Report
•Tailored Testing Methods
•Major Testing
Requirements
2 Develop Tailored and VE Based Design
Procedures
4.6.6 •Review the Comprehensive Method of Design
(CMD)
•Apply Findings from C and D to Develop Design
Principles and Philosophy
•Define and Depict Design Procedure
8 Days Tool 6
•CMD Design Review Report
•AppropriatePrinciples/Proc
edures Report
•Delineated VE Methods
3 Develop Efficient & Appropriate
Methods of Construction
4.6.7 •Establish Inventory of Available Construction
Equipment
•Review Design Parameters
•Determine Construction Factors and
Sequence
3 DaysTools 1, 6
& 9
•Report on Appropriate
Methods of Construction
•Appropriate Construction
Equipment Report
•Recommendations on
Sitable Methods of Construct
4 Develop Quality Control (QC) and
Assurance Sytems
4.6.8 •Correlate Test Results, Construction & Design
Requirements
•Develop QC Boundary Limits Based on
Material Characterization
•Develop QC Requirements for Environmental
& Construction
5 DaysTools 22,
21, 1 & 9
•Report on Appropriate QC
Methods
•Appropriate QC
Instrumentation &
Equipment Report
•Recommendations on QCM
5 Derive Preliminarily Applicable
Performance-Based General,
Standard & Particular Specifications
4.6.9 •Review and Correlate Findings from C, D and
E1~E4
•Carry Out Comprehensive Scientific &
Engineering Analysis
•Outline Performance-Based Specifications
18 DaysTools 10,
22 & 12
•Proposed Preliminary
Performance-Based
Specifications
F
Library,
Internet,
Technical
Forums
and
Correspo
ndence,
etc
•Mobilization Approval
•Facilitation of Mobilization
•Preliminary Mobilization
and Survey Methodology
Report
•Preliminary Test Result
Results and Performance
Review Report
•Logistics for Mobilization to Site
•General Assessment of Site Conditions
•Identification of Study Sections
•Engineering & Structural Evaluation of Distress
Conditions
•Analysis of Environmental Factors
•DT/NDT In-situ Testing
•Pavement Structural Evaluation
Literature Review
Procurement, Modification, Fabrication and Calibration of Field & Laborartory Testing Equipment &
Development of Appropriate Methods of Testing, Design and Construction [from C and D]
Condition Surveys of Previous Trial Sections (1987 ~ 2011)
•Identify & Source Relevant Literature
•Assign Review Teams According to Field of
Expertise
•Formulate Sequence of Review
•Correlate Review Results to Technical
Problems, Scientific & Engineering
Complexities that Curtail Research in
Geosynthetics Reinforced Geostructures
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
155 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
F
1 Recommend Appropriate Testing
Equipment for Geosynthetics
Reinforcement
TOR 3c)
6 Days Tool 5
•List of Recommended
Testing Equipment &
Instrumentation
2 Procure Appropriate Testing
Equipment for Geosynthetics
Reinforcement
4.6.4
32 Days Tool 1
•Procured Testing
Equipment
3 Modify Innovatively Testing
Equipment as per Conditions &
Necessity
4.6.4.4(1)
53 DaysTools 5, 4
& 18
•Modified Testing Equipment
4 Fabricate Innovatively Testing
Equipment as per Conditions &
Necessity
4.6.4.4(2)
37 DaysTools 1,18
& 15
•Fabricated Testing
Equipment
5 Calibration & Unification of
Equipment & Instruments
4.6.4.316 Days
Tools 1, 5,
4 & 18
•Well Calibrated & Unified
Testing Equipment
G
1 Review and Correlate Findings from C
and D
TOR 3e) •Carry out Comprehensive Analysis of Test
Results
•Evaluate Environmental Conditions and
Factors
8 DaysTools 22,
& 3
•Compilation of Findings
2 Apply Principles & Research Findings
from Analytical results of C & D
4.6.6 •Review and Apply Findings from C and D.3 Days Tool 22
•Procedures of Practical
Application of Findings
3 Modify Specifications Developed from
E.
4.6.9 •Review and Apply Findings from E.16 Days Tool 10
•Modified Specifications
4 Procure, Modify and/or Fabricate
Specialized Equipment Based on
Results from F.
4.6.4.4 •Review and Apply Findings from F.
42 Days Tool 5
•Newly Procured &
Recommended Equipment
5 Undertake Modified and Specialized
Lab and Scale Model Testing
4.6 •Design Modified and Specialized Testing
Regime with Reference to E1.63 Days Tool 4
•Application of Proposed
Methods of Testing
6 Carry Out Comprehensive Scientific
and Engineering Analysis
4.6.5 •Review and Apply Test results from E and F.15 Days Tool 22
•Comprehensive Analysis
Report
7 Derive Vital Geo-Engineering
Parameters for Design of Testing
Regime for Geosythetically reinforced
Embankments
4.6 ~ 4.8 •Review and Apply Scientific and Engineering
Findings from E and F.9 Days
Tools 18,
19 & 22
•Method and Procedures of
Testing Geosynthetically
Reinforced Embankments
H
Development of Special Specifications for Geosynthetically Reinforced Embankments
Design of Trial Sections for Geosynthetically Reinforced Embankments
Procurement, Modification, Fabrication and Calibration of Field & Laborartory Testing Equipment &
•Identify State of the Art Testing Equipment and
Instrument Manufacturers World wide
•Review Literature on Equipment
Manufacturing and Instrumentation
•Determine Limitations of Available
Equipment/ Instruments
•Determine factors & Components that
Require Modifications
Assess & Evaluate Equipment Fabrication
Capacity of Local Markets
•Assess & Evaluate Equipment Calibration
Capacity of Local Markets
•Establish & Follow Procurement Procedures
Develop and Adopt Modification Techniques &
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
156 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
H
1 Masalani Bridge Approaches TOR 3 d(i)1.5 Weeks Tool 2
2 Likoni ~ Shelly Beach TOR 3 d(ii)2 Weeks Tool 2
3 Kiserian ~ Isinya Road (D523) TOR 3
d(iii)1 Week Tool 4
4 Sigalagala ~ Butere Road (D260) TOR 3 d(iv)1.5 Weeks Tool 22
I
1 Rehabilitation of Eldoret ~ Timboroa
Road (A104)
TOR 3 e(i)1.5 Weeks Tool 2
2 Rehabilitation of Eldoret ~ Webuye
Road (A104)
TOR 3 e(ii)1.5 Weeks Tool 2
3 Rehabilitation of Webuye ~ Malaba
Road (A104)
TOR 3
e(iii)2 Weeks Tool 4
4 Rehabilitation of Uplands ~ Kimende
Road (A104)
TOR 3 e(iv)1 Week Tool 22
J
2 Apply Findings of C to I for Design of
Monitoring & Evaluation Programmes
4.6 ~ 4.8 •Modify Findings and establish Monitoring and
Evaluation Procedures 8 DaysTools 14
& 22
•Monitoring and Evaluation
Procedures
3 Apply Findings from F to Develop
Suitable Instrumentation
4.6.4 •Determine Suitable Instrumentation12 Days
Tools 5 &
18
•Recommendations on
Suitable Instrumentation
4 Design & Implement Immediate,
Short-Term, Medium-Term & Long-
Term Monitoring & Evaluation
Programmes
TOR 3 (f) •Design and Implement Appropriate
Monitoring and Evaluation Systems and
Programmes22 Days
Tools 14,
18 & 22
• Monitoring and Evaluation
Systems and Programmes
K Evaluation of Performance of Reinforced Earth Geostructures and Retaining Walls Along Thika Highway (A2)
Review Analytical Results from C to I. 4.6 ~ 4.8 •Modify and Apply Findings from C to I.14 Days
Tools 14
& 22
•Mobilization Approval
•Facilitation of Mobilization
•Preliminary Mobilization
and Method of Testing
Report
•Preliminary Test Results
and Performance Review
Report
•Mobilization Approval
•Facilitation of Mobilization
•Preliminary Engineering &
Structural Evaluation Report
•Preliminary Test Results
and Performance Review
Report
1 •Review Report
Development of Monitoring and Evaluation Programmes for Trials under H and I
Development of Special Specifications for Geosynthetically Reinforced DBM/AC
Design of Trial Sections for Geosynthetically Reinforced Embankments
•Logistics for Mobilization to Site
•General Assessment of Site Conditions
•Identification of Study Sections
•Engineering & Structural Evaluation of Distress
Conditions
•Analysis of Environmental Factors
•DT/NDT In-situ Testing
•Pavement Structural Evaluation
•Comprehensive Analysis of Geosynthetics
•Logistics for Mobilization to Site
•General Assessment of Site Conditions
•Identification of Study Sections
•Engineering & Structural Evaluation of Distress
Conditions
•Analysis of Environmental Factors
•DT/NDT In-situ Testing
•Pavement Structural Evaluation
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
157 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
K
2 Literature Review on Engineering
Design Principles of Reinforced
Geostructures and Retaining Walls
TOR 3.2
(a)
•Source the Relevant State of the Art Literature
•Assign Expert Review Team Members
•Carry out Comprehensive Analysis
•Compile, Collate & Correlate Review Results
to & Thika Road Existing Design Principles &
Philosophy/ Assignment Requirements
7 Days
Tools 1, 6,
7 & 15 -
17
• Literature Review Results
& Analysis
4 Assessment of General Site
Conditions
4.6.1 •Assess Geostructures
•Measure Geostructural Sizes
•Assess Access Conditions and Geometrical
Characteristics
8 Days Tool 14
• Preliminary Geo-structural
and Site Assesment Report
5 Evaluation of Environmental
Conditions
4.6.1 •Evaluate Topography
•Evaluate Hydraulic Conditions
•Evaluate Soil Conditions
•Evaluate Subsurface Drainage
3 Days Tool 14
• Preliminary Environmental
Evaluation Report
6 Determination of Environmental
Factors
4.6.5 •Determine Hydrogeological Parameters
•Determine Rainfall/ Precipitation Intensity
•Analyze Impact of Environmental Factors
6 DaysTools 22
& 3
• Preliminary
Hydrogeological Evaluation
Report
7 Analysis of Loading Factors 4.6.5 •Analyze Traffic Volume and Characteristics
•Derive Loading Intensity4 Days
Toos 3, 18
& 22
• Characteristics and
Intensity of Loding Report
8 Analysis of Displacement and
Deformation Factors
4.6.5 •Analyze Dynamic Loading Effect
•Correlate Dynamic Loading and Environmantal
Factors and Determine Effect
5 DaysTools 3 &
22
•Deformation
Characteristics Report
9 Determine Appropriate Testing
Equipment & Instrumentation
4.6.4 •Carry out Comparative Model Testing Adopting
In-situ Materials, Geo-structural Layer
Configuration, Mode of Reinforcement and
Loading Conditions to Simulate Existing Current
7 DaysTools 4, 5
& 18
•Testing Equipment &
Instrumentation
Recommendations
10 Determine Appropriate Monitoring &
Evaluation Programmes & systems
Based on Model from J.
4.6.1,
4.6.5~4.6.
9
•Review and Modify Monitoring and Evaluation
Methods Developed in J. 16 DaysTools 14 -
17
•Modified Monitoring and
Evaluation Procedures
11 Implement Monitoring & evaluation
Programmes
•Apply Modified Methods and Implement
Monitoring and Evaluation Programmes 133 DaysTools 14 -
17
• Monitoring and Evaluation
Impelemntation Procedures
12 Comprehensive Scientific &
Geotechnical engineering Analysis
4.6.5 •Collect Data Intensely
•Carry out Detailed Data Analysis
•Apply Advanced State of the Art Analytical
Tools for Comprehensive Analysis
26 DaysTools 18
& 22
• Comprehensive Scientific &
Geotechnical Engineering
Analysis Report
L
• Mobilization Plan
• Examination and
Assesment Report
3 Examination and Assesment of
Existing Construction Specifications
and Records for the RE Geostructures
and Retaining Walls
TOR 3.2
(b)
•Source the Relevant Documents Through
Client •Assign Expert Review Team Members
•Analyze and Apply Results in the Design of the
Monitoring and Evaluation Programmes
9 DaysTools 1, 6
& 7
Evaluation of Performance of Reinforced Earth Geostructures and Retaining Walls Along Thika Highway (A2)
1 Mobilization to Respective Sites
•City Arterial Connectors [Lot 1] 3
Structures
•Muthaiga Round Abaout - Kenyatta
University (KU) [Lot 2] 2 Structures
•KU - Thika [Lot 3] 2 Structures
TOR 3.2
(d) and
3.2 in
general
•Prepare Logistics and Plan for Mobilization
•Coordinate Site Arrangements and
Construction Programme with Mobilization
Plan2 Days Logistics
Reporting, Technical Forums, Internal Presentations and Monthly Progress Meeting
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
158 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Index PS1 PS2 PS3 PS4 SS1 SS2 SS3 SS4 SS5 SS6 SS7 SS8
TitleLead
Consultant
Highway/
Materials
Engineer
Research
Scientist
Snr.
Materials
Technologist
Asst.
Research
Engineer
Senior Geo-
scientist
Senior Eng.
Geologist
Site
Engineer
Mechanical
Engineer
Systems
Analyst/ICT
Specialist
Materials
Technologis
t
CAD/Field
Test/Instru
men. Expert
NameDr. Eng. J.N.
Mukabi
Eng. P.K.
Njoroge
K.W.
Ng'ang'aJ.B. Ogalloh S.F. Wekesa J. Okado
K.W.
Ng'ang'aJ. Mosaria
Eng. A.
MuthokaS. Kotheki
K.G.
WambuguL. Ngig
Tools/
Mode
Applied
OutputsS/N Requirement Derived by ConsultantSection
Ref.Task for Services Duration
L
1 Submission of Inception Report TOR 8 a) &
9 a)
•Compile and Submit 4 Copies of the Inception
Report Within 4 Weeks After Commencement
4 Weeks
Post-
Commence
Corres-
pondence
• Proposed Methodologies
• Detailed Work Programme
2 Submission of Daft Report TOR 8 b) &
9 b)
•Compile and Submit 4 Copies of Draft Report
Within 2 Weeks After Completion of Study Tasks2 Weeks
Post-Study
Tasks
Corres-
pondence
• Detailed Finidings Analysis
and Results
• Recommendations of Study
3 Submission of Draft Final Report TOR 8 c) &
9 c)
•Compile and Submit 4 Copies of a Draft Final
Report Within 4 Weeks After Engineer's
Comments
4 Weeks
Post-
Comments
Corres-
pondence
• Results of Study Findings
• Comments from The
Engineer
4 Submission of Final Report TOR 8 d) &
9 d)
•Discuss and Present Results and findings of
Draft Final report to Stakeholders during
Workshop
•Submit Final Report for Approval by Client
4 Weeks
After Stake-
Holders
Meeting
Corres-
pondence
• Final Report Incorporating
Comments from The
Engineer and the
Stakeholders Workshop
5 Organization of Technical Forums TOR 9 •Organize Technical Forum to Discuss Interim
results of 1st Interim Report
•Organize Technical Forum to Discuss Interim
results of 2nd Interim Report
•Organize Technical Forum to Discuss Interim
results of 3rd Interim Report
•Organize Technical Forum to Discuss Interim
results of 4th Interim Report
•Organize Technical Forum to Discuss Interim
results of 5th Interim Report
MonthlyMS &
Logistics
• Results of Discussions
• Comments from the
Forums
6 Organization of Internal
Presentations
TOR 9 •Organize Presentation to Client to
Disseminate Findings reported in 3rd Interim
Report
•Organize Presentation to Client to
Disseminate Findings reported in Draft Final
Report
•Organize Presentation to Client to
Disseminate Findings reported in Pre-
Workshop Findings
MonthlyMS &
Logistics
• Results of Discussions
• Comments from the
Presentations
7 Monthly Progress Meetings TOR 9 •Organize Monthly Progress Meetings with
Client to Assess Progress and Quality of
Output/Deliverables
MonthlyMS &
Logistics
• Monthly Progress Report
for Internal Use
M
1 Organize Workshops for Stakeholders TOR 3.1 g) •Confirm Date, Venue and number of
Participants with Client
•Make Necessary Logistical Arrangements
•Prepare Necessary Documents, Print outs,
Media and Material
33 Weeks
After
Commence
ment
MS &
Logistics
• Stakeholders Workshop
Organization of Workshop for Stakeholders
Reporting, Technical Forums, Internal Presentations and Monthly Progress Meeting
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
159 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A3.4 Figure 5.1 Proposed Tasks Management System and Implementation Arrangement
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
160 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A3.5 Figure 5.3 Implementation Arrangement by Tasks
Geotechnical Engineer/ Team Leader
Eng. Dr. J.N. Mukabi
Research Scientist
K.W.Ng'ang'a
Senior Engineering
Geologist
Assistant Research Engineer
Eng. S.F. Wekesa
Highways/ Materials Engineer
Eng. Kabbia Njoroge P.
Senior Geoscientist
J. Okado
Mechanical Engineer
A. Muthoka
CAD/ Field Testing /
Instrumentation Expert
L. Ngigi
Equipment/ Instrumentation
Research Assistant
Materials Research Assistant
Chief Systems Analyst/ ICT &
GeomaticsSpecialist
S. Kotheki
TASKS
A1 Award of Contract
A2 Technical Negotiations
A3 Financial Negotiations
A4 Signing of Contract
B1 Commencement of Consulting Services 14 Days after Order to Commence
B2 Orientation of Available Facilities
B3 Courtesy Calls to Client and Relevant Stakeholders
B4 Inception Meeting
C1 Scientific & Engineering Theories, Concepts & Principles of Geosynthetics
D1 Garsen ~ Lamu Road (B8/C112) & Garsen Bridge
C2 Standards & Procedures for Testing Chemical, Physical & Mechanical
C3 Impact of Geometric Design Characteristics of Geosynthetics
C4 Impact of Geosynthetics on the Environment
D2 Upgrading to dual carriageway of Thika ~ Makutano Road (A2)
Senior Materials Technologist
Ogallo J.B. Julius
Materials Technologist
K.G. Wambugu
Senior Lab Technician
Senior Materials Technician
Lab/ field Tehnicians
Site Engineer
J. Mosaria
Logistics Manager
Office Administrator
Support Staff
Secretaries
D3 Reconstruction of Eldoret ~ Burnt Forest Road (A104)
D4 Reconstruction of Webuye ~ Malaba Road (A104)
E1 Develop Appropriate Methods of Testing
E2 Develop Tailored and VE Based Design Procedures
E3 Develop Efficient & Appropriate Methods of Construction
E4 Develop Quality Control and Assurance Sytems
E5 Derive Preliminarily Applicable Performance-Based General, Standard &
F1 Recommend Appropriate Testing Equipment for Geosynthetics Reinforcement
F2 Procure Appropriate Testing Equipment for Geosynthetics Reinforcement
F3 Modify Innovatively Testing Equipment as per Conditions & Necessity
F4 Fabricate Innovatively Testing Equipment as per Conditions & Necessity
F5 Calibration & Unification of Equipment & Instruments
G1 Review and Correlate Findings from C and D
G2 Apply Principles & Research Findings from Analytical results of C & D
G3 Modify Specifications Developed from E.
G4 Procure, Modify and/or Fabricate Specialized Equipment Based on Results
G5 Undertake Modified and Specialized Lab and Scale Model Testing
G6 Carry Out Comprehensive Scientific and Engineering Analysis
G7 Derive Vital Geo-Engineering Parameters for Design of Testing Regime for
H1 Masalani Bridge Approaches
H2 Likoni ~ Shelly Beach
H3 Kiserian ~ Isinya Road (D523)
H4 Sigalagala ~ Butere Road (D260)
I1 Rehabilitation of Eldoret ~ Timboroa Road (A104)
C5 Other Relevant Literature
I2 Rehabilitation of Eldoret ~ Webuye Road (A104)
I3 Rehabilitation of Webuye ~ Malaba Road (A104)
I4 Rehabilitation of Uplands ~ Kimende Road (A104)
J1 Review Analytical Results from C to I.
J2 Apply Findings of C to I for Design of Monitoring & Evaluation Programmes
J3 Apply Findings from F to Develop Suitable Instrumentation
J4 Design & Implement Immediate, Short-Term, Medium-Term & Long-Term
K1 Mobilization to Respective Sites
K2 Assessment of General Site Conditions
K3 Evaluation of Environmental Conditions
K4 Determination of Environmental Factors
K5 Analysis of Loading Factors
K6 Analysis of Displacement and Deformation Factors
K7 Determine Appropriate Testing Equipment & Instrumentation
K8 Determine Appropriate Monitoring & Evaluation Programmes & systems Based on
K9 Implement Monitoring & evaluation Programmes
K10 Comprehensive Scientific & Geotechnical engineering Analysis
L1 Submission of Inception Report
L2 Submission of Interim Report
L3 Submission of Draft Final Report
L4 Submission of Final Report
L5 Organization of Technical Forums
L6 Organization of Internal Presentations
L7 Monthly Progress Meetings
M1 Organize Workshops for Stakeholders
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
161 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A3.6 Figure 6.3 Proposed Professional Staff and Support Staff Assignment ScheduleIn
dex
Position/ Task Staff Name Specific Field of Expertise in Relation to Assignment
Year
s of
Ex
peri
ence
Tot
al M
/Mon
ths
by E
xper
t
PS2 Highways/ Materials Engineer Eng. Kabbia Njoroge Petterson
Pavement Structure Design & Road Construction Materials; Performance Evaluation of RE Retaining Walls; Geometric Design, Structural Evaluation on Reinforced Geostructures including Geosynthetically Stabilized; Methods of Construction, Pavement Design & Testing
32 6.36
PS1 Lead Consultant Eng. Dr. John Ngaya Mukabi
Advanced Research in Geomaterials, Geosynthetics & RE Geostructures. Design of Research & Testing Regimes, Trial section, Evaluation & Monitoring Programmes, Pavement Design & Construction Methods; Development of Special Specifications, Presentation & Reporting; Methods Design; Overall Technical Approach Coordination & Supervision; Overall Organization of Study
26
Supp
ort S
taff
Lev
el
1
SS1-1 Assistant Research Engineer Eng. Fred Sirmoi Wekesa
Research in Construction Methods Testing, Research in Mechanically & Chemically Stabilized Geomaterials including Geosynthetically Reinforced Materials; Geosynthetic Types & Sources; Performance Specifications; Sourcing & Availability Expert; Design Manuals & Specifications
3 7.48
Prof
essi
onal
Sta
ff
Kihuha Waweru Ng'ang'a
Soil-Structural-Reinforcement Elements Research & Structural Matrix Analysis; Development of Quality Control Systems; Geometric Design & Characteristics; Geosynthetics Performance & Characteristics; Geotechnical Engineering Research & Literature Review; Impact of Materials on Environmental Impact assessment
18 5.14
PS4 Senior Materials Technologist Ogallo J.B. Julius
Construction Methods Testing, Research in Mechanically & Chemically Stabilized Geomaterials including Geosynthetically Reinforced Materials; Calibration & Verification of Equipment; Evaluation & Monitoring of Field/ Laboratory Testing; Quality Control; Implementation of Lab/ Field Testing Regimes
20
PS3 Research Scientist
6.53
6.97
SS2-3Mechanical Engineer (Instrument. & Equip.)
Eng. Alphonse MuthokaDesign and Modification of Field/ Laboratory Testing Equipment & Instrumentation; Evaluation of Field/ Laboratory Testing Equipment & Instrumentation Performance & Monitoring
17
7.99
Supp
ort S
taff
Lev
el 2
SS2-1 Senior Engineering Geologist Kihuha Waweru Ng'ang'aGeological Engineering Analysis and Site Characterization; Material Types & Sources; Hydrological Analysis, Drainage Characteristics; Field Activities & Tasks
30 3.66
SS2-2
SS1-2 Senior Geoscientist Joram Okado MukabiGeophysical & Geomathematical Analysis of In-situ Strata, Geomaterials & Soil~Geosynthetics Interaction, Local & Global Characteristics; Suitability Testing; Performance Evaluation; Quality Control & Monitoring
17
Systems Analyst/ ICT Specialist Sylvester Kotheki
Specialist in Engineering/ Management/ Field/ Office Information & Communication Technology & Design Applications; Expert in Engineering Systems, Intelligence, GIS/Geomatics, Modeling/3D; Industrial Design Knowledgebase; Technological & Computer Science Advisory
6.46
Site Engineer Eng. Julius MosariaConstruction Implementation of Geosynthetics Reinforced Materials/ Layers; Monitoring & Environmental Impact Assessment; Structural Analysis; Condition Survey & Scoping Inventory; Post Test Structural Repairs
3 5.78
25.00
15.47
34.73
Staf
fing
Lev
el
TOTAL M/Months 75.20 75.20
5.78
Tot
al M
/Mon
ths
by L
evel
SS2-6 CAD/ Field Test/ Instrumentation Expert Leonard Ngigi Mechanical Field Testing Equipment and Instrumentation. CAD Operations 18
SS2-5 Materials Tehnologist Kenneth Githuga WambuguGeotechnical Investigation, Materials Testing, Field and Laboratory Testing Techniques - Research Regime Interpretation & Implementation; Innovation of Field/ laboratory Testing Equipment; Field Activities
20 6.93
6.12
SS2-4 22
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
162 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A4: Example of Method of Geosynthetically Reinforced Pavement Structural Design (4.6.6)
Item 3.1 c) on the Scope of the Study on page 42 of the RFP makes a requirement, as one of the assignment tasks, of developing design procedures. The fundamental objective of the Study, as stipulated in item 2(i) of the TOR requires the same.
The Consultant therefore considers this as one of the most integral outputs as he has derived and depicted at the end of Figure 4.2 preceding Sub-section 4.6.1 of this chapter.
In consideration of the foregoing therefore, the Consultant shall endeavour to modify, improve and enhance the Comprehensive Method of Design (CMD), which they proposed in 2007 at the 23rd World Road Congress in Paris and the 14th African regional Conference on Soil Mechanics and Geotechnical engineering held in Yaounde, Cameroon in the same year.
The CMD, depicted in Figure 4.12, has been modified and applied in the design of Geosynthetically reinforced pavement structures in the Isiolo Airport Project in the Isiolo Town of Meru County in Eastern State of the Republic of Kenya as well as Geosynthetically reinforced embankment and foundation geo-structures for oil exploration activities in the Jonglei State of Southern Sudan.
Figure A4-a: The Comprehensive Method of Design (CMD)
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
163 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A4-1 Geosynthetically Reinforced Pavement Structural Design
An example of the Consultant’s design is presented in Section 4.11 of this chapter. Also refer to Tool 6 in Appendix V-III.6 of Volume III of this Technical Proposal.
A4-2 Geosynthetically Reinforced Embankment and Foundation
Sub-section 4.11.2 provides an example of the Consultant’s design of Geosynthetically reinforced embankment and foundation design.
Reference can also be made to Tool 7 in Appendix V-III.7 of Volume III of this Technical Proposal.
A5 Example of Methods of Construction (4.6.7)
Examples of the methods of construction developed and employed for Isiolo Airport Project are presented in Figures 4.13 to 4.16.
Figure A5-a: Overall Method of Construction
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
164 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Figure A5-b: Method of Construction of the Improved Subgrade
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
165 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Figure A5-c: Method of Construction of the Sub-base/ Base Course
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
166 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
Figure A5-d: Method of Construction of the Asphalt Concrete Wearing Course
December 1, 2011
[Development Of Construction & Performance Specifications For
Geosynthetics Reinforced Materials For Road Embankments And Pavements
& Performance Evaluation Of Reinforced Earth Walls (Re-Walls) Along Thika
Road]
167 Technical Proposal for Consultancy Services | Kensetsu Kaihatsu Limited
A6 Example of Innovatively Developed Quality Control Procedures [4.6.8]
Some of the Quality Control (QC) methods developed by the Consultant are presented below.
A6-1 Preamble
Measured and field data collection would certainly serve no purpose if appreciable accuracy and confidence levels are not achieved. Accurate and precise definition of the boundary limits of specification control can prove to be costly if they are not properly considered or tailored for a specific project.
The basic principles of some of the main quality control methods developed by the Author previously on other project modified to suit the design and construction specification requirements for the Addis Ababa~ Goha Tsion Project are briefly introduced in the subsequent sections. Numerous other interpretive methodologies, which are not introduced in this Report, have also been developed.
A6-2 Plasticity Materials (Crushed Aggregates)
This method of correction takes into account the reciprocal relation between water content (wc), density () and degree of compaction (Dc). For low plasticity materials whereby PI < 6, the following generalized quasi-empirical equations may be applied.
100/
'
m
c
s
c
l
c
optwwwf
l
cu
cfDDw
xxCxCnww
(A6.1)
where, u
cfw = Moisture content correction factor for DC>100, l
cw = Moisture content determined in the
Laboratory, wfn = Constant derived from the relation between the natural and laboratory moisture
contents, C = Density correction factor for laboratory and soil variability, Cw= Correction factor for
moisture content, w= In-place wet density of soil, opt = Maximum Dry Density (MDD),s
cD =Specified Degree
of Compaction, m
cD = Measured Degree of Compaction.
For cases where Dc < 100, the following equation may be applied:
100/
1'
m
c
s
c
l
c
optwwwf
l
cL
cfDDw
xCxCnww
(A6.2)
L
cfw defines the moisture content correction factor for Dc < 100.
The corrected Degree of Compaction (Cor
cD ) is then given by:
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s
c
w
ccfCor
cxDC
xDwD
. (A6.3)
where, .Cor
cD = Corrected degree of compaction, ul
cD = Standard upper limit degree of compaction, C
=Optimum density correction factor.
Considering some common and standard factors then, ,32.0wfn ,93.0' C 89.0wC .977.0Cand
Based on the Specifications for this Project for base course material, ul
c
s
c DandD %98 is determined as
102%. Consequently, equations (8.1), (8.2) and (8.3) are simplified to the forms expressed in Eqs. (A6.4), (A6.5) and (A6.6) respectively.
100/98
26.0m
c
l
c
optw
l
cu
cfDw
ww
(A6.4)
While,
100/98
126.0
m
c
l
c
optw
l
cL
cfDw
ww
(A6.5)
and,
10002.1. xwD cfCorc (A6.6)
Hence to correct for the aforementioned variable parameters for base course material, Eqs. (A6.4), (A6.5) and (A6.6) may be applied accordingly.
A6-3 Formulae For Correction of Moisture Content Vs. Degree of Compaction for High Plasticity
Materials (Subgrade, Embankment And Sub-base)
For high plasticity materials whereby PI > 6, the following generalized quasi-empirical equations may be applied in all cases.
100/
'
m
c
s
c
l
c
optwwwf
l
c
cfDDw
xxCxCnww
(A6.7)
The corrected Degree of Compaction (Cor
cD ) is then given by:
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s
c
w
ccfCor
cxDC
xDwD
. (A6.8)
Considering some common and standard factors ,32.0wfn 0.10.1,0.1' CandCC w
Based on the Specifications for this Project for subgrade material, ul
c
s
c DandD %95 is determined as
98%. Consequently, Esq. (A6.7) and (A6.8) are simplified to the forms expressed in Eqs. (A6.9) and (A6.10) respectively.
100/95
32.0m
c
l
c
optw
l
cu
cfDw
ww
(A6.9)
and,
10098.0. xwD cf
Cor
c (A6.10)
A6-4 Mechanical Stability Analysis
In order to analyze the impact of mechanical stability on the bearing capacity Equation (A6.11) may be adopted.
opt
II
c
r
S
opt
S
RF BRBRxRff . (A6.11)
where, S
RFf = Strength Ratio Parameter, S
optf . = Strength Ratio Parameter determined at the optimum
Batching Ratio value, c
rR = Rate of Reduction of the post compaction strength , opt
IBR = Batching Ratio
Index at optimum value,
A6-5 Quantitative Method of Evaluating Effect of Paving at Varying Grades of Slope
In developing the method of evaluating effect of paving construction in negative upgrade slope, the factors in Box 4A were taken into consideration.
Box 4A Factors to Consider when Developing Method of Evaluating Effect of Paving Construction
1. Segregation of particles, flow characteristics, non-homogeneity, contact pressure vibrational force, consistency, tractive force, sliding, Imperfect compaction, non-uniform thickness, impact on density, structural deficiency, differential deformation, localized flow and plastic failure.
2. Premature failure (cracking or micro-cracking), non-uniform inter-particle stress distribution, development and propagation of internal localized shear planes were also analyzed in relation to particle size, distribution, viscosity of bitumen, temperature, spreading rate, and state of inter-particle contact within a bituminous medium.
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The four main influencing factors are stipulated in Box 4B.
Box 4B Main Influencing factors
Rolling Resistance (Dynamic)
Considering that,
L
VGR Crr
254
2
(A6.12)
then,
100254
2
Li
VRG r
R
Cr (A6.13)
where R
CrG = Critical angle of slope in relation to rolling resistance, Rr = Rolling resistance factor, V =
Tractive velocity of construction equipment and L = Compaction distance
Damaging Effect (Static)
The damaging effect on the Marshall properties of the asphalt concrete due to the critical angle of inclination
is expressed as follows.
(A6.14)
where eff
sv =Damaging effect factor , lim =Limiting grade of slope, i=Grade of slope.
Friction Factor (Dynamic)
The friction factor resulting from the dynamic component is computed as:
100127
2 e
R
Vf F (A6.15)
where, fF=Friction factor, V=Velocity of construction equipment, f
CVG i =Critical grade of slope in
relation to the friction factor, R=Radius of curvature
1) Grade effect on the strength and shearing resistance properties of the Asphalt Concrete 2) Damaging effect on the Marshall properties of the Asphalt concrete 3) Effect of rate of roadway super elevation 4) Effect of excitement frequency in relation to micro-damage initiation due to construction
equipment
5.0
2
2limlim
tan1
tantantantan
iieffsv
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Effect of Excitement Frequency
Adopting the solution proposed by Housner (1963) for a half-sine wave acceleration pulse required for
overturning a block and modifying it to that required to initiate slip of the surface mass; then the following
equation is obtained for a value of ω that is small.
2
lim 1)(
g
gap
cvs (A6.16)
Where as=Acceleration to cause segregation, g = Force of gravity cr =Critical grade of slope,
lim =Limiting
grade of slope, p=Particle size (average), =Excitement frequency propagated by the construction
equipment.
For a large value of , Eq. (A6.16) can be represented by
limlim
FKgpcrgpsa
(A6.17)
where, =Oscillatory velocity of construction equipment, =Angle between the hexagonal diagonal of
an ideal particle with the normal line to the slip surface with an inclination of angle θ lim.,
KF=Contribution of inter-particle friction factor, μ=Coefficient of friction between particle and slope.
A6-6 Example of Development of Preliminary Performance –Based Specifications
An example of the parameter and specification mode for performance-based specifications is given under Sub-section 1.2.2 of Chapter 2 of this technical Proposal.
A6-7 Example of Maintenance Procedures Proposed
The Consultant has, over the years, developed, proposed and applied unique methods of predicting levels and quality of the maintenance required for pavement structures. An example of these procedures is presented as Tool 20 in Appendix V-III.20 of Volume III of this Technical Proposal.
A7 Example of Performance Monitoring & Evaluation of Reinforced Earth (RE)
Geostructures & Retaining Walls [4.7]
A7-1 Evaluation and Monitoring of RE Geostructures
Evaluation and monitoring of the Reinforced Earth (RE) Geostructures will be undertaken on the basis of the Consultant’s experience of a similar nature presented in Appendix V-III.14 of Volume III, Section 3.2 of Chapter 3 of this Technical Proposal and party introduced in Sub-section 4.7.4 of this chapter.
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A7-2 Evaluation and Monitoring of Retaining Walls
During a road and bridges rehabilitation programme under Grant Aid funding by the Government of Japan, slope failure occurred at a stretch around Sta. 9+310km from the city centre of Addis Ababa along the Addis Ababa~Goha Tsion~Debre Markos International Trunk road traversing through the Blue Nile, and which forms an integral part of the all-important north-western corridor connecting to the western part of The Sudan, whilst branching off to the east towards Gonder to the Eriterian border.
As a result, longitudinal cracks were prevalent within the asphalt concrete and significant shear failure occurred right through the pavement structure and subgrade as can be seen in Figures 1 and 2.
Due to environmental and financial constraints it became imperative that a cost-effective method, utilizing locally available material as much as possible, be developed.
Various countermeasures including the reinforcement of the slope embankment, construction of retaining wall, reduction of gradient of slope, improvement of subsurface drainage conditions, blanket and loading works etc. were preliminarily considered. It was concluded that the most cost-effective research based method be determined to ensure that; 1) a substantial proportion of the shear strength would be retained notwithstanding increased saturation and/or pore pressure levels; 2) tremendous reduction in the deflection of the surface and layers under loading be achieved; 3) resistance to erosion due to scouring be reduced; 4) resistance to contamination by materials in the underlying or supporting layers be substantially increased; and, 5) the effective elastic properties of the composite pavement structure be drastically increased.
Figure A7-a: Visible Longitudinal Cracks Within the Pavement Structure
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Figure A7-b: Cross-section of Slope Depicting Failure Section, Causes and Mechanisms
Tool 16 provides detailed discussions regarding this case whereby the Consultant provided effective Value Engineering (VE) countermeasures and engineering employing research oriented technologies that he developed for purposes of that assignment after designing trial sections and undertaking monitoring and evaluation over a period of three years (36 months) through varying seasonal changes and moisture-suction variations.
Tool 16 is included in Appendix V-III.16 of Volume III of this Technical Proposal.
A7-3 Comprehensive Analysis and Characterization of RE-Retaining Walls Interaction
During the proposed assignment, the Consultant intends to apply the state of the art engineering principles and concepts as well as recently developed scientific theories and geo-mathematical models to undertake comprehensive analysis and characterization of the RE-Retaining Walls interaction for the geo-structures to be investigated along Thika Road.
Some of the Tools that will be applied are presented in Tool 17 of Appendix V-III.17 of this Technical Proposal.
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A8 Example of Consultant’s Relevant Experience in Developing
Monitoring and Evaluation Systems & Programmes
Abstract Under “The Emergency Study on The Planning And Support for Basic Infrastructure in Juba
and The Surroundings in South Sudan”, a Project which was implemented under the Japanese Grant Aid
through the Japan International Cooperation Agency(JICA), Juba River Port Access Road was designed
and constructed as part of the Port Development Pilot Project. Sophisticated State of the Art
engineering concepts and principles were employed during the study, to realize model design and
method of construction as part of introducing appropriate technologies in Southern Sudan in order to
foster rapid sustainable infrastructure development.
OPMC stabilization and the Recap Methods, which realized cost savings of approximately 40% on the
pavement layer components (base and sub-base courses) were employed in the construction. Due to
the culture of overloading in Developing Countries and Africa in particular, coupled with the fact that
the Juba River Port would be the main entry point and landing hub for bulk goods into South Sudan, a
country which still has limited land transportation network and facilities, the Design ESAL was
determined at a higher value of 14.25 × 106 (Traffic Class T7 of the TRL Road Note 31). Post-
construction comprehensive monitoring, evaluation and analysis were undertaken, whereof the Case
Study Analysis (CSA) is reported herein. The results of the Case Study Analysis indicate that the OPMC
and Recap Methods were effective in containing the deformation of the heavily loaded pavement
structure constructed on the partially improved Black Cotton Soil (BCS).
Introduction
The Juba River Port Access Road traverses areas that are predominantly overlain with BCS within
swampy stretches. During the implementation of the stated Emergency Project, it was necessary to
adopt cost-effective methods of improving the existing ground for purposes of reducing the quantities
that would be required for the upper pavement layers (subbase and base courses) mainly due to lack of
suitable road construction materials within reasonable haulage distances. Full-fledged field
experimental sections with three varying pavement structural configurations were designed and
implemented as shown in Figures A8-a ~ A8-c.
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Figure A8-a: Typical Cross section of Type II-1 of the Juba River Port Access Road depicting the experimental
trial section pavement structure without OPMC stabilization and without subgrade improvement, constructed in swampy areas with expansive Black Cotton Soils under extreme conditions
Figure A8-b: Typical Cross section of Type II-2 of the Juba River Port Access Road depicting the experimental trial section pavement structure with OPMC Level 3 stabilization and OBRM stabilization for Base/Subbase as
well as partial Black Cotton Soil subgrade improvement constructed in swampy areas with expansive Black Cotton Soils under extreme conditions
Figure A8-c: Typical Cross section of Type II-3 of the Juba River Port Access Road depicting typical pavement structure with OPMC Level 5 and OBRM stabilization for Base/Subbase with well improved Black Cotton Soil
subgrade constructed in swampy areas with expansive Black Cotton Soils under extreme conditions
As depicted in Figures A8-b and A8-c, the ReCap, MCI and OPMC Strut Imbedding Techniques [1] were
applied in improving the subgrade while the subbase and base courses were stabilized using the OBRM
and OPMC methods respectively. The Comprehensive Method of Design (CMD) was employed [2].
Type II - 1Existing Black Cotton Soil Subgrade
t = 250mm Latertic Gravel Subbase
DBST Wearing Courset = 200mm Gravel Base Course
3500 3500 15001500 1500
Shoulder Shoulder Side
DitchCarriagewayCarriageway
4%4%
4%4%
10000
800
70
0
200 200 500500
t = 250mm Natural Gravel Capping LayerType II - 2Existing Black Cotton Soil Subgrade
t = 250mm OBRM Stabilized Latertic Gravel Subbase
DBST Wearing Courset = 200mm Gravel OPMC Level 3 Base Course
3500 3500 15001500 1500
Shoulder Shoulder Side
DitchCarriagewayCarriageway
4%4%
4%4%
10000
800
70
0
200 200 500500
Existing Black Cotton Soil Subgrade
t = 250mm OBRM Stabilized Latertic Gravel Subbase
DBST Wearing Courset = 200mm Gravel OPMC Level 3 Base Course
3500 3500 15001500 1500
Shoulder Shoulder Side
DitchCarriagewayCarriageway
4%4%
4%4%
800
700
200 200 500500
t = 250mm Natural Gravel Capping Layer
t = 200mm Natural Sand and/or Gravel Pebbles,
Filter Layer
MC sand Columns
Gravel Wearing Course
for Shoulders
50mm MC sand ColumnsType II - 3
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Survey, Monitoring and Testing Procedures
Details of the survey, monitoring and testing procedure are reported in the “Innovative Laboratory and
In-situ Methods of Testing in Geotechnical Engineering” [3] and the Juba River Port Access Road
Engineering Report No. SST1 [4] A summary of the main tests citing the purpose of the test and the
engineering parameters determined in relation to the Case Study Analysis is presented in Table A8-a.
Table A8-a: Summary of main tests, purpose and engineering parameters determined Prop.
Description of Test Purpose of Test/Engineering Parameters Determined in
Reference to this Case Study Analysis Ref. Eq.
1 (BPP)
1.1 Moisture Content Variation 1.2 Field and Lab. Density
Comparative Analysis for mainly quantifying Moisture-Suction Variation, ΔMc, ρ
1,2 &3
2 (MS)
Sieve Analysis Comparative Analysis to determine state of Mechanical Stabilization, η, δ, Msf, Bc, fBSR, foptRrc
4,5,6 7&8
3 (SC)
3.1 Field Deflection Testing 3.2 Innovative Soil Profiling 3.3 ST Geophysical Sounding
1. Determine Existing Structural Capacity, fSCe 2. Predict Structural Capacity Soundness, fSCt 3. Compute Maintenance Requirement Ratio, MRR
17 20
4 (UCS) (SS)
(EM)
4.1 Dynamic Cone Penetration 4.2 Laboratory UCS 4.3 Laboratory CUTC 4.4 Modified Laboratory VDL
1. Determine Consolidation Properties, SC, STC, LTC, Creep (a ),
CAS (a c), CLS (
r c), CSRF(δCSR)
2. CS (qu, Cu), Modulus of Deformation (E50), EEM (EE), 3. Deviator Stress, (q), Axial Stress, (
a ), Lateral Stress, (r ),
Angle of Shearing Resistance, (Φ), Elastic Modulus, (E), Shear Modulus (G), Modulus of Deformation, (Eε, Gγ), Secondary Yield Strain, YS, Mean Effective Stress (p΄)
4.Degree of Particle Interlocking(I ),
uI C ratio( SI ), Shear
Strength (f
), Dynamic Modulus (ED),
21
To
36
5 (EM)
In-situ Geophysical Testing 1. Initial Elastic Modulus, (E0), Shear Modulus (G0) 2. Geophysical Profile (GP)
21 32
6 Innovative Stage Loading Tests Refer to Mukabi et al. (2012a)[1] Notes: Prop – Property, BPP - Basic Physical Properties, SC – Structural Capacity, ST - Structural Thickness, SS- Shear Strength, UCS – Unconfined
Compressive Strength, CUTC – Consolidation Undrained Triaxial Compression, VDL – Vibrational Dynamic Loading, SC , STC, LTC, – Secondary ,
Short Term and Long Term Consolidation, CAS – Consolidation Axial Stress, CLS – Consolidation Lateral Stress, CSRF – Consolidation Shear Stress
Factor, US – Compressive Strength, EEM – Empirical Elastic Modulus, EM - Elastic Modulus
Theories and Concepts Adopted for Case Study Analysis
The fundamental theories and concepts adopted for the comprehensive Case Study Analysis are
discussed in detail in [3] and [4], whilst some of the derived basic functions are presented this section.
The basic functions were derived to characterize the impact of environmental factors on the
performance of the road pavement, evaluate the change in the intrinsic material characteristics
influenced by the nature, mode and degree of stabilization coupled with the reciprocal impact and
intensity of loading.
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Analysis of Strength, Deformation Resistance, Mechanical Stability and Structural Capacity
The analyses for strength, deformation resistance, mechanical stability and structural capacity were
undertaken mainly through the application of Eqs. (1) ~ (15).
Quantitative Analysis of impact of moisture ~ suction variation on the performance of the varying
pavement structural configurations
(MPa) (1)
The results of this analysis are presented in Table 2.
Quantitave Analysis of contribution of enhanced mechanical stabilization
161.exp MSf
S AM (2) f
SBN MA
CB exp (3)
when, 0<η<0.5
where, MfS is the Mechanical Stability factor, and in this case, AMS is the MS constant=178.6, η is the gradation index = log0.01P/log(d/dmax), MSideal =100, BC is the bearing capacity factor, ABN is the BC constant=130. The results of the quantitative analysis of the mechanical stability and bearing capacity are summarized in Table 2.
Particle agglomeration characteristics during consolidation
(4)
Contribution of particle agglomeration in enhancing strength and elastic modulus due to
cementation
(MPa) (5)
(6)
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(MPa) (7)
Influence of curing and ageing as a result of coupled effects
(8)
Magnitude of Représentative Rebound Déflection for structural analysis
The magnitude of the (RRD), δRD was computed from;
fc
tc
avRD LV f
502 ..
(9)
where, δav. is the average value of deflection measured under a wheel load of 5tons, V is the variance of the measurements and f
tc
is the temperature correction factor.
t
RT
tc
f
(10)
where, RT is the RRD determined at t=21°C and t , which is computed from:
PtCtBtAt 33 (11)
where, Aδ=7.2X10-5, Bδ=7.6X10-3, Cδ=0.27 and Dδ=2.7 are deflection-temperature related constants, while t is the average temperature of the asphaltic layers; t >16.5°C.
Prediction of deterioration of structural capacity with time progression
The deterioration with time of the structural capacity is predicted by adopting Eqs. (17 ~ 19). The
results for this Case Study are plotted in Figure 6.
𝑵
𝑵
𝑵 (12)
Environmental factors such as moisture-suction variation due to seasonal changes, inferior material
intrusion as a result of the combined effects of dynamic loading and water infiltration (pumping) and
land use affecting the structural capacity and pavement structural layer thickness, are quantitatively
analyzed and factored into generalized Eq. (17) by applying Eqs. (18 and 19) which define the time
dependant
𝑵
(13)
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The factor , which defines the variation with time in environmental factors is computed as,
(14)
where, = moisture~suction depreciating factor,
= BCS intrusion depreciating factor, =
pavement layer thickness depreciating factor.
Computation of Maintenance Requirement Ratio (MRR)
The computation of the MRR was made from Eq. (20) based on the results of the SCDR model by
adopting the TA over a loading period Nt and Design Life, DL.
(15)
GECPROM modules and functions adopted for Case Study Analysis and Modeling
Structural recoverability modules and functions
(MPa) (16)
The Secondary Consolidation Time (SCT) required to achieve the structural recoverability initial
modulus is computed from Eq. (22).
(˟10-2days) (17)
where, is the initial modulus after quasi structural recoverability,
is the post-
destructuration initial modulus determined after Short-Term Consolidation (STC) and =19.3˟10(m-2)
is LTC related material constant. Destructuration caused by excessive densification
During this Study, prolonged heavy dynamic loading was observed to cause destructuration in the BCS
layers. This phenomenon was simulated in the laboratory by adopting the SHANSEP concept. The basic
definition functions of this characterization are presented in the following equations where the degree
of destructuration due to excessive densification is expressed as a function of OCR.
(MPa) (18)
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where, R
oE is the resulting initial modulus, refoE = 915 (Mpa) is the reference initial modulus,
P
yoE is the pseudo-yield initial modulus determined at the stress level (pseudo-yield stress) which is
higher than the yield stress ya and from which the specimen is rebound defined as;
390.NC
yao
P
yao
P
yo aoEE
(MPa) (19)
and, =0.225, =1.78, =5.22, =6.85 and =4.1 are constants for stiff to hard
Pleistocene and OPMC treated Geomaterials.
For OCR>2.5
390. OCREEP
yoRo (MPa)
(20)
Destructuration caused by remolding (reconstitution)
Reconstitution of natural clays results in total remolding and destructuration of the vital structural
components, fabric, diagenetic properties, inherent anisotropy and transformation to enhanced
rheological behavior of otherwise well cemented and highly structured clays. On the other hand, road
construction materials are, in practically all cases, always remolded prior to use. Furthermore, since
most of the existing theories and models that define deformation and strength characteristics of clays
are based on remolded clays, extensive study of this subject to facilitate for the necessary modification
of such constitutive models is certainly vital. In this analysis, a Destructuration Index, which defines
the degree of destructuration as a result of persistent heavy dynamic and/or seismic loading, is
introduced as:
(MPa) (21)
where, is the initial shear modulus of the intact ground and is the initial shear modulus
determined from CUTC/CDTC laboratory tests performed on specimens reconstituted from the original
clayey Geomaterial.
The corresponding elastic yield strain is determined as:
(%) (22)
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The peak shear strength defined in terms of deviatoric stress, , mean effective stress, and angle of
internal resistance, are computed from the following relations.
(23)
Summary of some Case Study Analysis Results
A summary of some of the results of the Case Study Analysis is presented in Table 2. It can be noted that Type II-3 pavement structure exhibits the most superior geotechnical engineering parameters, whilst Type II-1 is most susceptible to moisture changes.
On the other hand, Table 3 summarizes the analytical results that show the influence of particle agglomeration on strength and deformation resistance as a result of time dependent cementation and consolidation, the characteristics of which are depicted in Figure 4 for the base course layer. It can be observed that particle agglomeration and consolidation effects are more predominant in the base course layers that were stabilized by applying the OPMC technology (Type II-2 and Type II-3).
Table A8-b: Summary of vital Geotechnical Engineering parameters
Notes: PAV. – Pavement, MS – Mechanical Stabilization, IGf - Intensity Growth Factor, LIf - Load Intensity Factor, BC – Base course, SB – Subbase, ISG – Improved Subgrade, NSG – Natural Subgrade, COMPO. PAVE– Composite Pavement
GEOTECHNICAL ENGINEERING PARAMETERS
Moisture~Suction Variation MS Particle Agglomeration Ageing Load
TYPE
OF
PAV.
Layer
Type
𝒒𝒖(𝑴𝑷𝒂) @ΔMc=
𝑬 𝒂𝒙 𝑴𝑷𝒂 @ΔMc=
𝑴
%
𝑩
%
𝜹𝑪𝑺 𝒒 𝒂𝒙
𝑴𝑷𝒂) 𝞥′
(˚) 𝑬
𝑴𝑷𝒂
𝒒𝒖𝑪
M
P
𝑬 𝒂𝒙𝑳𝑻𝑪
MP
a
𝑰𝑮 𝑳𝑰
˗5
%
0
%
+5
%
0 % +5% D
T
D
T
C
U
T
C
C
U
T
C
C
U
T
C
GE
O
D
C
P
CU
TC
D
T
D
T
TYPE
II-1
BC 1.1 .8 .7 1625 1179 67 63 34 1.3 25 1854 1.1 1901 - -
SB 0.7 .55 .32 1331 946 59 54 23 .88 22 1519 .73 1606 - -
CL - - - - - - - - - - - - - - -
ISG - - - - - - - - - - - - - - -
NSG .05 .04 .03 82 56 31 29 1.7 .06 15.
5
295 .14 357 - -
TYPE
II-2
BC 15 11 9.9 2995
3
23295 84 79 67 18 33 3012
2
14 3022
8
- -
SB 8.9 6.7 5.1 2118
9
18331 79 74 34 11 25 2127
2
11 2146
4
- -
CL 3.6 2.7 2.1 8481 6615 56 53 14 4.3 19 8638 3.3 8756 - -
ISG - - - - - - - - - - - - - - -
NSG .05 .04 .03 84 56 31 29 1.7 .06 16 294 .14 363 - -
TYPE
II-3
BC 26 19 18 3685
9
31330 93 87 63 31 35 3694
3
22 3713
4
- -
SB 8.9 6,7 5.1 2607
3
22868 89 84 34 11 25 2623
1
12 2634
8
- -
CL 3.6 2.7 2.1 8481 6615 70 66 14 4.3 19 1218
7
3.7 1271
2
- -
ISG .95 .72 .55 3794 2417 63 59 2.4 1.2 17 3993 .81 4069 - -
NSG .05 .04 .03 84 56 31 29 1.7 .06 16 294 .14 363 - -
COM
PO.
PAVE
TYPE
II-1
.25 .19 .14 418 246 43 41 8.1 .31 18 477 .23 693 17 3
TYPE
II-2
3.4 2.6 1.9 1332 947 57 53 13 4.1 18 1428 3.2 1607 17 3
TYPE
II-3
5.1 3.9 2.9 1271
4
10399 72 68 34 6.2 20 1232
9
4.8 1298
9
17 3
REF. Eq. (1) (1) (1) (2) (2) (4) (8) (9) 10 11 12 13 21 37 38
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Table A8-c: Influence of Particle Agglomeration on strength and deformation resistance as a result of time dependent cementation and consolidation
POST CONSTRUCTION PERIOD (DAYS) TYPE PARA 1 3 7 14 28 56 224 448 896 1092 TYPE II-1
UCS (MPa)
0.4 0.55 0.59 0.63 0.66 0.69 0.76 0.79 0.83 0.84 TYPE II-2 0.71 1.91 2.47 3.47 5.61 6.78 10.8 11.4 12.0 12.1 TYPE II-3 1.12 3.10 3.92 4.92 7.06 8.23 18.2 19.4 20.6 20.9 TYPE II-1
Emax (MPa)
693 786 928 1044 1160 1276 1508 1625 1741 1774 TYPE II-2 1432 3492 6160 10223 18993 23368 27953 2955
3 31154
31623
TYPE II-3 2062 8670 11556 15967 24556 29806 34451 36858
39665
40123
TYPE II-1 (εa)ELS˟10-
3(%)
0.086 0.098 0.116 0.131 0.146 0.161 0.191 0.206
0.221
0.225
TYPE II-2 0.155 0.165 0.266 0.427 0.790 0.982 1.153 1.238
1.323
1.344
TYPE II-3 0.326 0.692 0.936 1.262 1.548 1.838 2.193 2.354
2.515
2.579
In-situ Modeling of Response of Varying Pavement Structural Configurations
The behavior of the three types of varying pavement structures was modeled by using the GECPROM [5]. Basically, for Type II-2 and Type II-3 pavement structures, the initial phase of loading is seen to progressively enhance intrinsic particle agglomeration (ref. to Eqs. 9 ~ 13), and secondary consolidation as a result of the heavy traffic loading (ref. to Figures 4 and 6).
Table A8-d: Summary of GECPRO/SCDR Model Parameters
Notes: PAV. – Pavement, MS – Mechanical Stabilization, IGf - Intensity Growth Factor, LIf - Load Intensity Factor, BC – Base Course, SB –
Subbase, ISG – Improved Subgrade, NSG – Natural Subgrade, COMPO. PAVE– Composite Pavement
GECPROM/SCDR MODELING PARAMETERS
Quasi-Structural Recoverability Destructuration
TYPE
OF
PAV.
Layer
Type 𝑬
𝑺
(MPa)
𝑺𝑪𝑺
Days
[𝜺𝒂]𝒀𝑰𝑺
(%)
𝑬 𝑷
(MPa)
[𝜺𝒂]𝒀𝑰𝑺
(%)
𝑬
(MPa)
[𝜺𝒂]𝒀𝑰
(%)
˟10-3
(𝑮 )𝑰 (MPa)
[𝜺𝒂]𝒀𝑰𝑰
(%)
𝒒 𝒂𝒙𝑰
(MP
a)
(𝒑 ′ )𝑰
(MP
a)
𝞥 ′𝑰
(˚)
˟10-3 ˟10-3 SHANSEP Remolding
TYPE
II-1
BC 1634 1065 .488 1686 .513 1063 .366 524 .488 1.2 1.3 25
SB 1356 1038 .377 1392 .389 787 .271 423 .367 0.8 1.0 22
CL - - - - - - - - - - - -
ISG - - - - - - - - - - - -
NSG 86 477 .026 89 .033 4.7 .014 23 .038 .068 .12 15
TYPE
II-2
BC 30312 3833 .184 30570 1.92 23659 1.49 9973 2.01 17.8 13.4 33
SB 22146 722 .516 22244 .556 15059 .396 7182 .583 10.2 10.4 25
CL 8544 272 .347 8675 .373 5126 .242 2748 .392 4.1 5.62 19
ISG - - - - - - - - - - - -
NSG 92 503 .031 96 .037 49 .016 26 .042 .069 .13 16
TYPE
II-3
BC 37126 2015 2.38 37256 2.45 32298 2.08 12396 2.63 30.7 21.8 35
SB 26583 3244 .633 26593 .667 18342 .501 8761 .688 10.6 11.1 24
CL 12677 555 .381 12956 .396 7862 .269 4126 .411 4.7 6.74 18
ISG 3823 207 .174 3943 .181 2217 .109 1254 .172 1.21 1.83 17
NSG 97 523 .036 99 .039 52 .019 31 .045 .07 .15 16
COM
PO.
TYPE
II-1
454 124 .126 493 .132 271 .092 147 .136 .33 .49 17
TYPE
II-2
1363 171 .367 1401 .386 911 .289 423 .392 4.54 6.29 18
TYPE
II-3
12924 372 .527 13133 .574 11163 .488 4108 .516 6.57 8.89 19
REF. Eq. (21) (22) (23) (25) (26) (27) (30) (32) (33) (34) (35) 36
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Figure A8-d: Variation in a) UCS and b) elastic stiffness with pavement layer quality-measured/predicted
It can be derived from these figures that; 1) Type II-1 pavement structure shows very low strength and deformation resistance, 2) the OPMC stabilized layers exhibit high strength and deformation resistance, 3) the ground improvement method for the BCS subgrade achieved significant results contributing immensely to the enhanced performance of Type II-3 composite pavement structure, 4) the modeled and measured curves show an appreciably good agreement.
Analysis of Predicted and Actual Pavement Structural Performance
Figure 6 shows a comparison of the predicted and actual performance based on the results from deflection testing and prediction made from the Structural Capacity Depreciation (SCDR) model for the three varying pavement structural configurations.. It can be inferred that Type II-1 approaches the critical zone, which is an indication of the requirement of fully-fledged rehabilitation after only 4.6 years whereas Type II-3 is structurally sound over the whole period of the Design Life (DL).
Figure A8-e: Progressive time dependent structural capacity depreciation of three types of pavement
structures
0
200
400
600
800
1000
0 10000 20000 30000 40000 50000
De
pth
(m
m)
Type II-1: Geophysical MeasurementsType II-2: Geophysical MeasurementsType II-3: Geophysical MeasurementsType II-1: Predicted by GECPROMType II-2:Predicted by GECPROMType II-3: Predicted by GECPROM
0.4
0.5
0.6
0.7
0.8
0.9
1
1.1
1.2
0 2 4 6 8 10 12 14 16 18 20 22
SCD
Fac
tor,
f sc
Time Progression, Nt (Years)
Structural Capacity Depreciation Factor Vs. Time Progression
TYPE II-1 PREDICTEDTYPE II-2 PREDICTEDTYPE II-3 PREDICTEDTYPE II-2 ACTUALTYPE II-3 ACTUALTYPE II-1 ACTUAL
Terminal Level Line
Critical Zone
Elastic Stiffness (MPa)
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On the other hand, based on Eq. (20) and the SCDR results, the Maintenance Requirement Ratio (MRR), was generated for the three varying pavement configurations over the entire period of the Design Life (DL=20years). The results indicated that; {Type II-1}MRR=2.86, {Type II-2}MRR=0.88, {Type II-3}MRR=0.43.
Conclusions
Comprehensive Case Study Analyses were carried out consistently over a post-construction period of approximately 4 years employing sophisticated geotechnical engineering concepts and advanced analytical tools. It can be inferred that the innovative technologies applied for the Type II-3 design realized significant increase in the strength, deformation resistance, mechanical stability and structural capacity.
A8-1 Development of Mechanistic-Empirical Design Procedures for Geosynthetically
Reinforced Flexible Pavement Structure
At an advanced stage of this assignment, the Consultant intends to develop mechanistic-empirical design procedures for Geosynthetically reinforced pavements and other Geostructures.
Tool 19 included in the Consultants Toolbook contained in Volume III of this Technical Proposal provides an insight on how the Consultant intends to achieve this goal.
A8-2 Road Maintenance Procedures for Geosynthetically Reinforced Flexible Pavement
Structure
Based on their experience and results from further research within this assignment, the Consultant intends to introduce road maintenance procedures for Geosynthetically reinforced flexible pavement structures equipped with prediction and simulation modes.
Reference can be made to Tool 20 of the Consultants Toolbook in Volume III of this Technical Proposal.
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A9 Example of Consultant’s Experience in Research Oriented Design for
Geosynthetics Reinforced Geo-Structures
A9-1a: Pavement Structural Design Example – Isiolo Airport
Fig A9-a: Plan of the Airport showing the TWO pavement types with other details
Fig A9-b: Plan View and MC Sand Column Details for BCS Subgrade Improvement
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A9-1b: Typical Cross-section A
The Typical Cross-section of the Isiolo Airport pavement structure designed in accordance with the U.S.
Federal Aviation Administration (FAA) and the International Civil Aviation Organization (ICAO) Design
Codes and stipulations is shown in Fig. 7.7.1.
Fig. A9-c: Typical Cross-section A
Fig A9-d: Plan View and MC Sand Columns Details For Section A
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A9-1c Typical Cross Section B
Fig. A9-c: Typical Cross-section B
Fig A9-d: Plan View and MC Sand Column Details for Cross Section B
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Fig A9-e: Typical Cross-Section of the Apron
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A9.2 Embankment and Foundation Design Example
Figure A9-f: Typical plan for the drilling rig pad foundations
Figure A9-g: Typical cross section for the drilling rig pad foundations
Original
Ground
M=23T
C=2.5T
M=23T
C=1.3T
15T
8T
23T
Native Material=1180TLime=9T
NM=560TSand=880T
NativeMaterial
Native Material=1240TSand=530T
Native Material=1770T
5m25m17m
OPMC L2
OBRM L3
OBRM L1
OPMCL2
OPMCL6
OBRM
L4
NM=16
Sand =8T
Access AreaOffice/Storage5m 29m 13m
Access Area Office/Storage
Cellar Substructure
15m 5mm CementScreeding
t=150mm
t=150mm
t=150mm
t=150mm
t=100mm
t=50mm
OPMC Piles5cm Sand Longitudinalcolumns OBRM
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Figure A10-g: Typical drawings for the drilling rig pad foundations
A10 Capacity Building
Preamble
Since the beginning of civilization, it is indeed common knowledge from various perspectives, that
Research and Development (R&D) is the foundation and most paramount undertaking that can effectively
and efficiently trigger an internationally competent degree of industrialization and sustainable
development that would practically realize Poverty Alleviation and a conducive socio-economic
environment culminating in a better life. Capacity building being the cornerstone for sustainable
technological advancement
Formulation of research policies for any agency, institution or organization at any given scale is normally
propelled and guided by unique needs fostering enhanced rate and level of development vis a vis available
natural and human resources. This calls for research to be appropriate, dynamic and commensurate to the
prevailing dynamics of time~space related events, disasters, rate of development/ destruction and
fundamental changes in the socio-economic and physical environment.
It is noted that training is not a specific component of this assignment as referenced in the RFP data Sheet
item (g).
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Figure A10-a: Proposed Organizational Structure for the MTRD Research Institution
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A11 Environmental Impact Assessment
To promote environmental quality, including providing measures, environmental impact assessment (EIA)
and strategic environmental assessment should be considered for incorporating environmental concerns
for the projects under this Study.
Environmental scoping is to be undertaken during the Condition Surveys (refer to RFP TOR 3(b), 3(e), 3(f))
and Performance Evaluation of RE Geo-structures and Retaining Walls (refer to RFP 3(d)). Further research
into the impact of Geosynthetics to the environment is to be undertaken in conjunction with the literature
review as stated in the RFP 3(a) and correlated to practical field assessments with recommendations for
mitigation measures.
The environmental concerns/challenges identified are to be considered during the development of Design
Procedures, Construction Specifications and Quality Control Systems as included in the RFP 3(c) and during
the development of Special Specifications for further trials on Geosynthetics (reinforced embankments and
DBM/AC) reference to the RFP 3(e) and 3(f).
A11-1 Contribution of OBRM/OPMCS to Environmental Impact Mitigation
In this Study (refer to Figure 4.20) as well as [6]-[10], the results have shown that through the application
of the OBRM and OPMCS technologies: 1) reduction of volume of materials used by approximately 40% is
achieved in most cases; 2) less disturbance of land for borrow pits; 3) reduced amounts of disposable soil
during construction; 4) reduced risk of collapse of geo-engineering structures and; 5) environmentally
friendly due to; utilization, as much as possible, of locally available material and reduction of dust,
distances (lengths of access roads) to borrow pits, Geomaterial quantities required and land acquisition,
among other factors.
Whilst developing these methods, comprehensive appraisals and environmental assessments that would
lead to sustainable development with minimal negative environmental impacts, were undertaken [11].
The example depicted in Figure 4.20 was part of the design for Wau~Abyei Trunk road constructed in the
northern oil fields of Southern Sudan.
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Figure A11-a: Contribution of OPMCS to reduction of environmental impacts of road works