CIV3203/ CIV 2283 Civil Engineering Construction€¦ · 4. Written Assignment/Report by Project...

CIV3203 CIV2283 Major Assignment and Oral Presentation Guide Page 1

CIV3203/ CIV 2283

Civil Engineering Construction

Guideline Notes

Written Assignment

and

Oral Presentations

Semester 1, 2018


1. Background

This unit is based predominantly on project-based learning. This means it is composed of some basic knowledge and skills as well as practice/tutorial classes that focus on aspects of construction projects provided by industry that encourages you to integrate those skills in your understanding of the unit. This helps you to make the bridge between university learning and workplace problem solving.

The 2018 construction project will focus on the M80 Upgrade Sunshine to Calder – M80 S2C (EJ Whitten Bridge) Project in Sunshine, incorporating widening and strengthening of the existing bridge. Design and construction of the M80 S2C Freeway will provide up to five lanes in both directions, an upgraded shared user path, public safety barriers, electronic freeway management system; and a new CCTV cameras to assist with managing and clearing incidents quickly and efficiently.

Fulton Hogan commenced work in August 2016 with work scheduled for completion in early 2019. A field trip to the EJ Whitten Bridge site is scheduled for Week 3, Friday 16th March 2018, where students will get an overview of the project from FH site staff. Commencing from Week 1, the practice classes, scheduled each Friday, have focused on different aspects relevant to the M80 S2C Project.

The written assignment and oral presentations will draw together learnings f rom six (6) of the practice class exercises and assessments that you undertake for application within your group exercise:

Topic 3 - OHS Activity: Risk analysis & JSA

Topic 4 - Project Scheduling

Topic 5 - Estimating & Productivity

Topic 6 - ITP Exercise – QA

Topic 7 - Environmental Management Plan

Topic 8 - Subcontract Letting


2. Assessment

The total assessment of CIV3203 is made up of 4 components:

Submission Date Activity Value %

Practice Class 1 – 9 March Practice Class 3 – 13 April Practice Class 4 – 20 April Practice Class 5 – 27 April Practice Class 6 – 4 May Practice Class 7 – 11 May Practice Class 8 – 18 May Practice Class 9 – 25 May

Practice classes - 8 Topics –

Individual Assessment. Practice Class Assessment task to be completed prior to the next practice class eg. Practice class assessment for Topic 1 due on 9 March one week after practice class. Each Practice class assessment worth 2.5%.

20

25 May 2018 (before 4.00PM)

1. Written Major Project Assignment by project groups. Group Assessment (This will build on work conducted during the Practice Classes; e.g. Cost Estimating, Project Scheduling, ITP Exercise, SWMS, Subcontract letting, EMP Exercise)

40

25 May 2018 2. Oral Presentations – Group /Individual

Assessment. Major Assignment by project groups (based on scope of written assignment)

25

1 June 2018(before 4.00PM)

3. Industry Experience Report 15

Total assessment 100%

Examination(s) There is no formal examination for CIV3203.

The aim of this document is to provide guidelines for:

Written Assignment

Oral Presentations For other specific details regarding CIV3203 CIV2283 please refer to the 2018 S1 Unit Guide on Moodle. Because some of the Practice Classes are conducted within groups, the assessment mark for the written and oral presentations will be assigned to the group. It is therefore important that you communicate and work closely with your group members when preparing your written and oral presentations.

Guidelines to the Industry Experience Report are provided separately on Moodle.

3. Work Groups Prior to the start of the second practice class, students should be organized into work groups of five (5) members for the Practice Classes. This can be conducted online within Moodle. If students are not organized into groups by Week 2, you will be allocated a group by the unit Coordinator. If you belong to a group with only 4 or less members, you are still expected to complete the entire written report and oral presentations.


4. Written Assignment/Report by Project Groups

4.2.1. Introduction These guidelines provide student groups with background to the submission requirements for the written Major Project Assignment (Engineering Report). Your report will need to be inclusive of the Practice Class exercises by making reference to all relevant components.

4.2.2. Major Project Assignment (Engineering Report) The written report will comprise the following:

i. Front Cover ii. Table of Contents iii. Table of Figures iv. Executive Summary (includes Recommendations) v. Background vi. Introduction

- Brief outline of how the report documentation is structured, where the key items of information are located, and how it is to be used

vii. Topic Sections 1. Estimating – M80 S2C Bridge Estimate Crosshead 2. Project Planning & Scheduling – M80 S2C Bridge 3. Quality Management – Inspection Test plan 4. Safe Work Method Statement – Concreting 5. Subcontract Letting – Preferred concrete subcontractor 6. Environmental Management – EMP and A&I Register

viii. Conclusions

ix. Recommendations

x. Appendices that cover additional information supporting the six (6) Topic learning outcomes from the practice classes and the topic sections.

Please note that all topic sections 1 to 6 are compulsory and students must earn at least 50% in the written and oral assessments to pass CIV3203, CIV2283. The format of the reports should be consistent with standard guidelines for writing engineering reports. Refer below for more detailed explanation of requirements for each of the six (6) topic sections.

4.2.3. Executive Summary

The Executive Summary should provide a brief summary of the M80 S2C Bridge Project and report topics with final recommendations (SMART). The Executive Summary should be a short précis (2-3 pages maximum). The overall written report should be bound, together with sections and appendices (refer below), and should clearly state the work distribution among group members (i.e. in 1 page or less will detail the contribution of each team member and which team members worked on which particular appendices). This must be signed by all team members or the report will not be assessed.

4.2.4. Topic Sections and Appendices Each Section shall include relevant information to enable the reader to understand the task, assumptions, methodology(brief outline on how the work was undertaken, evaluation and analysis and conclusion with (S- Specific, M- Measureable, A - Achievable/Attractive, R- Realistic, T-Timing) recommendations to tie into the executive summary. Relevant cross-


references to the accompanying Appendices should be provided to allow the Assessor to refer to more detail (e.g. – calculations, figures, data, etc). Each topic section should contain sufficient supporting and explanatory information to enable an external reviewer to fully understand your work. It is important that sufficient cross-referencing is provided within the Sections, to the appendices, to provide the reviewer with sufficient knowledge as to how/where to access particular aspects and calculations related to the exercises. Each section will have a different report structure, depending on the particular exercise. Guidance notes are provided below, although it must be understood that the structure and contents will vary with each different sectional topic, supported by the relevant Practice Class exercise. Calculations should be structured and indexed.

Specifically each Section should include:

Section 1 Undertaking Estimating Task for Construction of single bridge cross-head on EJ Whitten Bridge

Background to the construction of the concrete cross-heads on the EJ Whitten Bridge was provided during the class site visit on 16 March 2018. The estimation of construction work trades and related activity productivities, were discussed in detail and explained during Week 8 Lecture and practice class. Different forms of construction methodology were discussed in Week 1 for various projects.

On behalf of M/s Fulton Hogan, you (with your group) have been assigned, as the Construction Project Engineer, to carry out an Estimate for the construction of a single bridge cross-head (Pier 8) to VicRoads specifications. You are therefore required to estimate the whole scope of works including installation & removal of all temporary falsework/formwork, reinforcement, post tensioning, concreting, bearing replacement works (All the required documentation is on Moodle – refer to relevant Vic Roads drawings and notes, some parts of which are shown below). When doing this task, you are required to list out any assumptions / clarifications you have made and details of your work breakdown in your estimate. Include a written component explaining your construction methodology and factors you considered in developing your methodology. This should provide a link to the assumptions that are used in the estimate.

Refer to Full Drawing No. EJW-GB-D-0103 (Only Part Shown Above )- Pier 08 only


Refer to Full Drawing EJW-GB-D-0104 (only Part shown above

Section 2 Project Planning & Scheduling

Being a member of the EJ Whitten Bridge project structures team you have been given a task to organize and manage a construction of a single cross-head at Pier No. 8. Your task relevant to this exercise is to prepare a construction program accompanied with a supporting documentation and present it to the Project Manager and a wider construction team. Objectives:

1. Obtain all relevant documentation including drawings, specifications, contract, etc. (see the project description and assumptions below)

2. Define the scope of the works

3. Develop a project WBS and construction methodology

4. Identify key project (contract) dates, milestones and constraints

5. Create a file/program in MS Project Called “EH Whitten Bridge Cross-head”

6. Adopt an inclement weather allowance (IWA) for the project as per the Inclement Weather Allowance Calculation Spreadsheet and Project Calendar Spreadsheet

7. Define working hours and set up project calendars including:

a. CFMEU – 5D+RDO+PH+IWA Calendar (Assigned to all construction activities on site)

b. CORPORATE – 5D+PH+AL Calendar (Assigned to all off site activities)

c. STANDARD 7D Calendar (Assigned to concrete curing and bridge superstructure erection activities)

8. Set up the Project Data in the “Project Information” window including

a. Define Project Start Date – Monday, 1st October 2018

b. Adopt Project Default Calendar (CFMEU – 5D+RDO+PH+IWA)

9. Adopt the critical path criteria (select 3 days free float/slack)

10. Understand construction and all other project constraints and relevant requirements

11. Calculate relevant quantities (concrete, reo, strands, etc)


12. Based on the adopted construction methodology; restrictions and constraints; quantities, productivities and resources develop a L3 construction program

a. Create a “Notes” column in the program

i. Make sure all relevant information/assumptions related to tasks/activities are recorded in the “Notes” column

b. Develop/Define WBS for the works, based on

i. Scope of the works ii. Lectures notes and the bridge program WBS presented in the lectures iii. Staging and construction methodology

Note: Project Plans, Design & Procurement WBS Nodes shall not be developed further than the L1.

c. Create tasks/activities and calculate/adopt durations

i. Use the “Build up Sheet” to calculate task/activity durations d. Apply logic/links and constraints to the activities

e. Create concrete curing activities and assign Standard 7 Days calendar

i. Refer to Table 610.251 (Section 610 Vicroads Specification) for curing duration (removal of formwork times)

f. Identify a critical path

g. Perform a program “health check” to ensure no negative float/slack and all activities have predecessors and successors.

13. Prepare program supporting documentation including:

a. Build up sheet/calculation for major construction activities (include only those activities that have Quantity and Productivity assigned to)

b. Program summary (Basis of Program – BoP) including:

i. Scope of works ii. WBS & Construction Methodology iii. Program key dates including milestones & constraints iv. Basis for calculation of activity durations (Contingencies, Inclement

Weather Allowances, Productivity Rates) v. Calendars vi. Constraints vii. Program assumptions viii. Critical Path (provide comments on why there are so many activities on

the critical path) ix. Risk & Opportunities in the program x. Resources (crews/plant/formwork) xi. Justify the assumptions and logic adopted in the program

c. The program summary document shall be maximum four (4No.) A4 pages long

Outcome:

At the end of this unit assignment the students should be able to:

1. Have a basic understanding of a scheduling and planning process

2. Develop basic skills in MS Project planning software

3. Develop a logical and simple construction methodology and sequencing of works

4. Define and adopt relevant program assumptions and criteria

5. Understand and assess risks and opportunities in the program

6. Obtain an analytical approach to the project management including planning /scheduling, controls and forecasting process


7. Prepare a simple, meaningful and realistic (logical) high level construction program

8. Understand importance of calendars and constraints and their impact on the overall project duration and critical path

9. Understand how a critical path is defined and how it can be manipulated by utilization of activity constraints

10. Define WBS and understand its importance for a program structure/layout

11. Present the program to an audience and explain its logic, main assumptions, and risks/opportunities with full confidence and clarity

PROJECT INFORMATION & ASSUMPTION

Your program should be based on the following assumptions/information: General

For the sake of simplicity assume this job is a part of an existing contract/project, but yet a stand along project

o Note that the dates in the program do not represent the real dates on site

The project award date is Monday, 1st October 2018

All site craneage (lifting operations) are undertaken by the straddle carrier (portal cranes). The crane relevant information are provided (uploaded on Moodle).

A cross-head typical cross section and concrete pour sequence are given below:

Refer to Full Drawing EJW-PR-D-0202 (only Part shown above)

o Use simplified cross sections for quantity calculation (see the build up sheet)

The Project Practical Completion (Contractual) Date is 31st May 2019


Project Default/Construction Calendar is CFMEU – 5D+RDO+PH+IWA (see the attached spreadsheet)

o Adopt a 5 day working week (no weekend work),

o Adopt an 8 hours working day,

o Assume no work on Public Holidays, RDO’s, Union Picnic Day and IWA Days

Critical Path Definition

o Activities with 3 days or less free slack/float

Note: there are a significant number of activities on the critical path; Why?

Inclement Weather Allowance (IWA)

o IWA days shall be included in the program/calendar by blocking out a calculated number of days in each month (as per the table below and calendar spreadsheet). These days are non-working days in the calendar.

Month/Year Oct, 18 Nov, 18 Dec, 18 Jan, 19 Feb, 19 Mar, 19 Apr, 19 May, 19

IWA Days 2 2 3 3 2 2 1 1

Assume that early/enabling works have already been completed, these include:

o Permits & Approvals – Obtained

o Services Relocation – Completed

o Site Clearing & Grubbing – Completed

o Survey & Set out of works – Completed

o Dilapidation Survey & Report – Completed

o Site mobilization – partly completed

Existing site compound needs to be expanded so your team can mobilize on site (extra sheds are required).

Project documentation

o Assume majority of the project documentation have already been submitted and approved by the Superintendent, your responsibility is to:

Prepare and submit for an approval a construction methodology for the bridge construction and associated SWMS’s, ITP’s and checklists

Site possession will be granted after the Superintendent has reviewed and approved your project documentation

Design

o Design of the bridge including the cross-head at Pier No. 8 has been completed

o Your task is to organize a temporary works design including formwork and falsework design and obtain an approval from VicRoads

Procurement

o Most of the work packages have already been procured

o Your responsibility is to procure the following packages:

In-situ concrete subcontractor

Reinforcement Supplier


Temporary Falsework/Formwork/Platform Design Consultant

Temporary Falsework/Formwork/Platform Manufacturer

Post tensioning supplier/installer

Concrete Supplier

Bearing Pads Supplier

Traffic Management

o Traffic management consultant/subcontractor has already been procured

o Traffic management plan has already been approved by VicRoads

o Traffic management will be installed (by others) before your works commence as required

Note that a great majority of the works is done behind safety barriers and without any obstructions to the traffic

Traffic Management (Lane Closure) is required for Stage 1 & Stage 2 Concrete Pour only

Freeway Closure (Lane closure) is allowed only on weekdays (Mon – Thu) at night time between 10:30pm-5:30am. No closures on weekend or Public Holidays.

Preliminary/Pre-construction Activities (off Site)

Project team mobilization (off site)

o Your (structures) team will initially mobilize off site to prepare a construction methodology and procure subcontractors and additional site facilities (assume 2 days)

o Site mobilization will commence and additional site facilities (sheds) will be established on site immediately after the site possession has been granted by the Superintendent.

Installation of additional site facilities will take place immediately after the team off-site mobilisation

Prepare and submit construction methodology and associated SWMS’s, ITP’s & CL’s

o Assume 3 days duration, F-S link with the project team mobilization (off site)

Project documentation reviewed & approved by the Superintendent (10 days)

o Allow 10 days following the submission of the project documentation

After the site compound has been established (additional facilities provided) your team will relocate/mobilize on site (assume 5 days)

Assume 2 days for installation of safety & environmental controls (after site possession)

Design Phase

Design starts after the a design consultant has been procured (note that we don’t wait for the Superintendent’s approval of the designer)

Temporary Works - Formwork and Falsework Design

o Assume 15D for Design development and 10D for review & approval

Level of details for the Design WBS

o Level 1 WBS only

o Maximum three activities e.g.


Formwork & Falswork Design (15D)

Superintendent’s Approval (10D)

Issue for Construction (IFC) – Formwork & Falsework (0D)

Procurement

Procurement starts after the project team mobilization off site (F-S Link)

Assume the following duration for subcontractor procurement:

o In-situ concrete subcontractor – 10 days

o Reinforcement supply – 10 days

o Temporary Falsework/Formwork Design – 10 days

o Post-tensioning supplier/installer – 15 days

o Concrete Supplier – 15 days

o Bearing Pads Supplier – 15 days

o Temporary Falsework/Formwork Fabricator/Manufacturer – 10 days

Allow 10 days for the Superintendent to approve the subcontractors/suppliers

Level of details for the Procurement WBS

o Develop the Procurement WBS to L2 only

o Use maximum of two activity/tasks for each procurement package e.g.

In-situ concrete Subcontractor (10 Days)

In-situ concrete subcontractor Approved by the Superintendent (10 Days)

Off-site fabrication of long lead items o Reinforcement Fabrication – 15 days o Bearings fabrication – 60 days o Shop drawings for Temporary Falsework/Formwork/Platform – 10 days o Temporary Falsework/Formwork/Platform Fabrication (off-site) – 20 days

Construction – General Assumptions

In order to simplify the program, assume:

1. The Pier 8 cross-head construction is a standalone project, which doesn’t depend on nor affect any other construction activities on site

2. Assume any hard stands, storage areas, etc. are prepared by others (civil team)

3. Traffic management

o Organized by others (civil team)

o Assume all bridge works (apart from stage 1 and stage 2 concrete pours) take place behind traffic barriers (hence no interruption to the traffic)

o Stage 1 and stage 2 concrete pours are done at night time with a lane closure (a boom concrete pump located on the bridge deck)

4. Works on the cross-head on site can commence only after the temporary Falsework/Formwork/Platform has been installed, secured, inspected and certified on site.

Construction Ancillaries (Site Enabling Works)

1. Site Enabling Works start immediately after the Superintendent has reviewed and approved your Construction Methodology and associated documentation and released a Hold Point (HP), or in other words granted a Site Possession.

a. Site Establishment/Mobilisation – Additional Site Facilities/Sheds (5D)

i. Starts after project team off-site 11obilization


b. Project Team relocation on site (5D)

i. Starts after site establishment

c. Safety & Environmental Controls (2D)

i. Starts after site possession grant

Pier No. 8 Cross-Head Construction Works

1. Temporary Cross-head Falsework/Formwork On-site Delivery, Assembly and Installation

o Site assembly of the Temporary Falsework will take place at North Abutment prior to installation

o The temporary Falsework/Formwork/Platform is assembled into (consists of) two (2No.) parts (trusses)

o Each of these two parts/trusses is installed separately and then bolted together

o Activities:

1. Deliver and Assemble the Temporary Falsework/Formwork/Platform on Site (20 Days)

2. Install Truss A (1 Day)

3. Install Truss B (1 Day)

4. Final bolting, adjustment, securing & Inspection (1 Day)

2. Cross-head In-situ Concrete Works

o Preparation/Enabling Works

1. Scabble existing pier columns (1 Day)

Scabbling is a roughing (exposing aggregate) of an existing concrete structure (surface) that will become a construction joint (concrete poured against)

In this case we are scabbling parts/areas/faces of the existing pier columns where the new cross-head will be poured

Daily productivity is 10m2/crew/shift, use two (2No.) crews

2. Drill and Install Rebar (Starter bars) into existing Pier Columns (2 Days)

Drilling is done after scabbling

Assume eighty (80No.) Holes are to be drilled to the required embedment depth

Once drilled, the holes will be cleaned and starter bars installed (epoxyed)

Due to the existing reo bars in the pier column it is assumed that for each successfully drilled hole (to the required depth) there are three (3No.) attempts (half drilled holes that are of no use)

Hence total No. of holes for the productivity calculation is Qty=80+3x80=320 holes per each column, Total Qty=2x320=640

Daily productivity is 320 holes/crew/shift

3. Prepare formwork joints for concrete pour (1 Day)

o Stage 1 Cross-head In-situ Concrete Works

1. Deliver Reinforcement on site (1 Day)

2. Install Stage 1 Cross-head Reinforcement (6 days)


Assume daily reo productivity is 5T/crew/shift

It is assumed that Reo/Concrete Ratio is 250kg/m3

Use this ratio to calculate Reo quantity from the concrete quantity

Assume simplified cross-section to calculate concrete quantity (refer to “Build up” spreadsheet and drawings EJW-PR-D-0201 and EJW-PR-D-0202)

The cross-head length is L=21m

Reinforcement is delivered to the North Abutment and then moved to the cross-head by cranes (several loads)

3. Install post-tensioning ducts (1 Day)

Post tensioning ducts are installed after reo has been installed

Calculate quantity of ducts using overall Cross-head length (21m) and number of ducts shown on the drawing EJW-PR-D-0202)

Assume daily productivity of 250Lm/crew/shift

4. Install Inner Formwork (2 Days)

Installed after both reo and post-tensioning ducts are in place

Formwork material craned in

5. Stage 1 Concrete Pour (1 Day)

Done at night under lane closure

Concrete pump located on the bridge deck

Can be done only on weekdays (Mon-Thu) between 10;30pm and 5:30am

Quantity of concrete calculated from the simplified cross section (see build up spreadsheet)

6. Concrete Curing (3 Days)

Concrete must achieve 32MPa strength before stripping and stressing (see notes on the drawing No. EJW-PR-D-0204)

It is assumed that the 32MPa strength will be achieved in 72 hrs or 3 Days

o Post Tensioning (stage 1) & Stage 2 Cross-head In-situ Concrete Works

1. Install/Pull stressing strands through the ducts (1 Day)

This is done after the concrete pour (during concrete curing)

Stressing strands are pulled through the cast in ducts

2. Strip Inner Formwork (stage 1 concrete pour)

Required concrete strength for stripping and stressing is 32MPa

Assume 72hrs or 3 days between pouring and stripping/stressing

3. Install Roof/Soffit Sacrificial Formwork (2 days)

This is sacrificial formwork, which means it stays within the structure.

This activity is done after the inner formwork has been stripped, however it can be done concurrently with the post-stressing as there is no clash between these two crews

4. Install stage 2 pour reinforcement (2 days)

Done after the formwork has been completed

Can be done after or during the post stressing (no crew clash)


It is assumed that Reo/Concrete Ratio is 250kg/m3



Assume simplified cross-section to calculate concrete quantity (refer to “Build up” spreadsheet and drawings EJW-PR-D-0201 and EJW-PR-D-0202)

The cross-head length is L=21m

Reinforcement is delivered to the North Abutment and then moved to the cross-head by cranes (several loads)

5. Install Stressing Jacks & Prepare for Stressing (1 days)

Generally done after the installation of stressing strands

This activity is independent of the in-situ concrete activity, as there is no crew clashes (working in different areas)

Can be done before, during or after stage 2 formwork and reo installation, BUT must be completed before stage 2 concrete pour

6. Stage 1 Stressing/Post tensioning (1 Day)

Done after stage 1 concrete has achieved 32MPa (3 days curing)

Independent of formwork and reo works

Must be done before stage 2 concrete pour

Only two (2No.) strands stressed at this stage (Strands No. 2 & 5)

Assumed productivity is 6No. strands/crew/shift, use 1No. crew


Done at night under lane closure

Concrete pump located on the bridge deck

Can be done only on weekdays (Mon-Thu) between 10;30pm and 5:30am

Quantity of concrete calculated from the simplified cross section (see build up spreadsheet)

8. Concrete Curing (4 Days)

Concrete must achieve 40MPa strength before stripping and stressing (see notes on the drawing No. EJW-PR-D-0204)

It is assumed that the 40MPa strength will be achieved in 96 hrs or 4 Days

o Post Tensioning (stage 2) & Stage 3 Cross-head In-situ Concrete Works

9. Remove/Lower falsework before stage 2 stressing (1 Day)

Must break the bond between formwork/falsework/platform and concrete

Independent of stage 3 in-situ concrete works (can take place concurrently)

10. Stage 2 Stressing/Post tensioning (2 Days)

Done after concrete has achieved 40MPa (4 days curing)

Done in pairs (two tendons at time)

Total of ten (10No.) tendons to be stressed

Adopted productivity is 6No. Tendons/crew/shift


11. Concrete/Grout Existing Stressing Recesses (1 Day)

Done after stressing, but before duct grouting

Use 40MPa concrete/grout



12. Grout Stressing Ducts (1 Day)

Work out the number of ducts from drawing No. EJV-PR-D-0202

Grout is pumped into ducts

13. Install Plinths and Anti-sliding blocks reinforcement (1 Day)

Done after the concrete curing (stage 2)

Can be done concurrently with the post-stressing works

Refer to the drawings No. EJV-PR-D-0201 and EJW-PR-D-0202 to work out number of plinths and anti-sliding blocks

Use these drawings and simplified cross section in the “Build up” sheet to work out volume of concrete

Assume Reo/Concrete Ratio is 250kg/m3



14. Install Formwork for Plinths and Anti-sliding blocks (1 Day)

After completion of reinforcement installation

Can be done during post-stressing activities


Refer to the drawings No. EJV-PR-D-0201 and EJW-PR-D-0202 to work out number of plinths and anti-sliding blocks

Use these drawings and simplified cross section in the “Build up” sheet to work out volume of concrete

Use a kibble (say 2m3 capacity) and a crane to pour concrete

16. Cure Stage 3 Concrete before stripping (1 Day)

Strip next day

Plinths and anti-sliding blocks will not be loaded until steel girder erection meaning the concrete strength is not critical for the program (hence 1 day curing)

17. Strip Plinths and anti-sliding blocks (1 Day)

Plinths and anti-sliding blocks stripped the next day following concrete pour

3. Replacement of Existing Bearings and Plinths

o Deliver Bearings on Site (1 Day)

18. Can be done any time following fabrication of the bearings

Note the long lead time for the bearing fabrication

o Set up Hydraulic Jacks and Anti-burst system (3 Days)

19. Done after plinths and anti-sliding blocks have been stripped

20. Due to the weight and size of the jacks and associated equipment and given the space restrictions it is assumed that all other crews have finished their works and left the site

o Jack up the existing bridge structure/girder (1 Day)

1. Once everything has been set up properly including jacks, supports, hydraulic equipment and survey/control points, the actual jacking up of the bridge girder takes a few minutes only

2. It is critical that jacking is controlled (allowed a few mm only)


3. Jacking up is done under a live traffic

o Remove existing bearings and demolish Existing Plinths (2 Days)

1. Bearings are very heavy (1-2T each)

2. The space between the top of a pier column and underside of the bridge girded is extremely narrow (a few hundred millimeters)

3. Extremely narrow space restricts options and ability to use a proper lifting equipment, hence can use only manual equipment such as push and pull props, hydraulic winches, etc, hence the productivity is very low

4. Assume 1No. bearings/crew/shift; use 2No. crew

o Install Reinforcement for New Plinths (1 Day)

1. Total of four (4No.) new Plinths

2. The space is extremely narrow and tight, hence low productivity

o Install formwork for new Plinths (1 Day)

1. Total of four (4No.) new Plinths

2. The space is extremely narrow and tight, hence low productivity

o Install new bearings (1 Day)

1. New Bearings are extremely heavy (around 1T each)

2. Bearings are attached (suspended) under the bridge girders

3. Can’t use proper lifting equipment

o Pour Concrete (1 Day)

o Concrete Curing (1 Day)

1. Use early strength concrete; it is assumed that the required strength is achieved in 24 hrs

o Lower/Remove Hydraulic Jacks and Temporary Anti-burst system (1 Day)

4. Remove/Dismantle Temporary Cross-head Falsework/Platform

o Remove Cross-head Falsework/Formwork Platform (2 Days)

1. This is a two stage process (similar to the installation, but reversed)

2. Remove Truss B First, than Truss A

3. Use portal crane

o Bagging and Patching of the new Cross-head (3 Days)

1. Starts after the removal of the Falsework

2. Done from a portable work platform and top of the crosshead

Project Completion & Hand Over

o Prepare and Submit Project Documentation Incl. ASB Drawings and QA Documentation (20 Days)

1. Following completion of Stage 3 Concrete Pour and Stage 2 Pour Concrete Curing Activities (F-S)

2. This is a contractual requirement, all relevant documentation must be submitted during the course of the project (as different parts/stages of the project have been completed)

3. All relevant documentation must be submitted before the PC date

o Target PC is a milestone marking the completion of all construction works on site

o Final works Incl. Clean up and Minor Defects (3 Days)

1. This is the final activity on site, the site is preparing for final inspection and hand over

2. Tiding up, cleaning, minor defects (cosmetic), etc


o Site Demobilisation (3 Days)

1. “Packing up” dismantling of the site compound/facilities, storage areas, access roads/tracks, etc

Program Tips/Hints

1. The L3 program shall have less than 115 lines

2. Apply constraints to the following activities:

a. Contract Award (“must start on” constraint)

b. Project Practical Completion – Contractual (“finish no later than” constraint)

3. Ensure no negative float/slack in the program

4. Ensure all activities are linked (have predecessor and successor)

a. Only those activities under the “Project Milestones” WBS node don’t need to have successors

b. “Contract Award” is the only activity without predecessor

5. Utilize two 2No. crews for scabbling of the existing pier columns and removal of existing bearings and demolition of plinths. All other construction activities will be done by one crew (different crews for different disciplines/trades).

6. Be aware of the calendars you assign to different activities as they affect your program duration and critical path

7. Critical Path

a. Most L3 programs usually have several independent construction paths from start to finish as they are generally programs with multidiscipline and independent activities undertaken in a number of different zones/areas.

b. Generally some of these works/activities can be done concurrently (say similar activities, but in different areas), hence a number of different paths

c. For these programs a critical path is the longest path in the program, and it generally includes 20%-30% of all activities

d. In this case a great majority of activities are on the critical path, the reason for this is as follows:

i. All construction work on site is undertaken from the temporary falsework/formwork/platform

ii. A great majority of the construction activities/disciplines have F-S links as these works cannot be done concurrently with other activities due to space (available construction area) availability

iii. From the critical path perspective this program is a high risk program and it is quite unusual to see a L3 program with this high level of activities on the critical path

iv. In real world this program will most likely represent a look-ahead program, which is a standalone program that feeds into a L3 program.

8. Program Dates to observe

a. The project/program shall be completed on or before 31st May 2019

b. Site possession granted on or before 19th October 2018

c. Site mobilization completed on or before 8th November 2018

d. Temporary Falsework/Formwork/Platform commissioned on or before 1st March 2019

e. Stage 1 Concrete Pour 27th March 2019

f. Stage 2 Concrete Pour 10th April 2019

g. Stage 3 Concrete Pour 18th April 2019


h. Replacement of Existing Bearings/Plinths completed and jacks demobilized 21st May 2019

i. Removal of the temporary falsework/formwork/platform 28th May 2019

j. Project Completion & Hand Over Dates

i. ASB drawings & Documentation preparation (20D) starts after stage 3 concrete pour (F-S)

ii. Target practical completion (all construction works complete) milestone immediately after bagging and patching works (28/05/2019)

iii. Final works incl. clean up and minor defects (3D) starts after Target Practical Completion (F-S)

iv. Site demobilization (3D) starts after Target Practical Completion (F-S)

Section 3 Quality Management and ITP Exercise: Undertaking Concrete Works at the

EJ Whitten Bridge Construction site During the Topic 6 lecture and practice class, you were requested to prepare a work breakdown structure and ITP documentation for a construction project. Relevant documentation was posted on Moodle. Your group should provide:

A work breakdown structure and ITP Documentation for bridge cross-head concrete pour,

with supporting text that includes:

Introduction (scope of the analysis and definition of the constructed item(s) Work breakdown description and definition of the sub-tasks (or “activities”)

that are involved Description of items that need inspection/approvals and what type

Review/Witness/Hold Point – and why?)

Description of the type of inspection and acceptance criteria, and justify

Conclusions Section 4 Safe Work Method Statement (SWMS): Undertaking a concrete pour at EJ

Whitten Bridge Background to the construction of the bridge pier was provided during the class site visit on 16 March 2018. Within your student group, this assignment will address the safety issues associated with the construction of the bridge crosshead. As part of the assignment, consider the construction of the concrete crosshead.

During the White Card training, your safety induction at the EJ Whitten Bridge site office, and during the Topic 3 Safety class, a range of construction hazards, risks, and controls were discussed. A key document that deals with the step-by-step process of how to do the job safely is the Safe Work Method Statement (SWMS), and examples were provided.

For your assignment, prepare an engineering report that covers and provides supporting text/discussion of the following:

Introduction (scope of the analysis and definition of the constructed item) Work breakdown structure and definition of the sub-tasks (or “activities” that are

necessary to construct the cross-head: from beginning to completion) Description of potential hazards that you identified for each of the sub-tasks (or

“activities”) Risk Assessment for each potential hazard and justify how you decided on the

Initial Risk Scores Description of the Control Measures required to eliminate or minimise the risk of

the hazards and justify the Residual Risk Scores Compile into the SWMS template provided during Topic 5 Safety class (and

discussed during the lecture)


Conclusions Please note that a SWMS relates to a particular construction activity on a specific site: i.e. we are considering the bridge cross-head to be built at the EJ Whitten Bridge site together with the particular hazards and risks associated with that site. Bear in mind that the same SWMS can be utilised on subsequent bridge pier construction at the same site, but not on different aspects of the project (e.g. concrete for drainage works) or different projects (e.g. Melbourne Airport).

The White Card documentation provided during Week 1 (refer also to other support documentation on Moodle) can be used to assist you. On Moodle, the following resources have also been provided for you: – White Card & OHS training background information, lectures, and guides – SWMS template, checklists, guidelines – Safety Data Sheet: Concrete. – Acts and Legislation reference Section 5 Subcontract Letting: Undertaking to procure a Concrete Cross-head

Construction Subcontractor at the EJ Whitten Bridge Construction Site Background to the construction of the concrete bridge crosshead was provided during the class site visit on 16 March 2018. The factors to consider during procurement of various subcontract works for a construction project, together with their contractual aspects were discussed and practiced with examples during Topic 5 -Weeks 8 and Topic 8 – Week 11 lectures and practice classes. Using your above knowledge and experience acquired, you (with your group members), are assigned by Fulton Hogan to procure the preferred Subcontractor for the construction of a concrete cross-head within EJ Whitten Bridge construction site. The scope of work should include fixing of steel reinforcement, formwork construction and erection and pouring of concrete (All the required documents are available on Moodle under the relevant section). As a matter of urgency, the Project Manager of FH requires you to carry out a quantity take off cross-head works, to evaluate 2 sub contract quotes, to select the preferred subcontractor along with your justifications and recommendation, to prepare the Subcontract Agreement and then to draft the Letter of Acceptance to the preferred Subcontractor highlighting the outstanding information/documentation etc. further required from the selected Subcontractor. When doing these tasks, you are required to list out any assumptions / clarifications you have made in your recommendation.

Section 6 Preparation of an Environmental Management Plan Follow the relevant guidelines and complete an EMP for the EJ Whitten Bridge site, using the templates and checklists that were provided during the Week 10 Topic 7 Environment Lecture and Practice Class and on Moodle. Your group should also provide supporting text that includes:

Introduction that outlines the scope of your EMP Discuss the sites of potential environmental issues Explain the background to the risk assessment and highlight key items Justify your recommended environmental protection measures Relevant drawings, including: Plan 1 Types and Locations of Environmental

Protection Measures; and Plan 2 Risk Assessment and Designs of Environmental Protection Measures

4.2.5. Due Date

The due date for the Written Assignment/Report is 25 May 2018 before 4.00 PM. The reports, with a CD containing a PDF Copy together with a Dept. Civil Engineering Cover Sheet (signed by the Team Members), are to be handed in to the Lecturer/Co-ordinator marking Oral


Presentations, Meeting Room 1 – Building 31, Meeting Room 2 Building 60, where they will be date and time stamped. You will be marked off on submission. Unless prior approval has been given by the Lecturer/Co-ordinator, late work will be penalised at 5% of available marks per hour up to a maximum of 20% per day. The Civil Engineering Department office will close at 4.00pm SHARP so do not arrive at 4.00pm to fill out cover sheets and expect the office staff to wait.

Oral Presentations

1. Background

The class times on Friday 25 May 2018 (8 AM to 4 PM with an extension to 5pm if needed), have been allocated towards each group for oral presentations. The presentation shall summarise the key findings from the written assignment, bundled up into four key topics, namely I. Estimating & Scheduling II. ITP Exercise – QA & EMP III. OHS Activity: Risk analysis & Safe Work Method Statement IV. Subcontract Letting

A roster will be drawn up and you will be advised of your presentation time. The oral presentation for each group will consist of:

Presentation time (20 minutes) includes Questions (2-3 minutes).

Each member of the group will present a different aspect of the written assignment: Effective communication within your group is essential for the delivery of a timely and good quality presentation. How effectively you communicate your work via the oral presentation (as well as the Written Report), are important assessment milestones for your design team. These guidelines are provided to assist your group with the Oral Presentation.

2. Things to Keep in Mind

The Assessor The Assessor has commissioned your group to undertake the Practice class exercises. The purpose of the oral presentation (and the Written Report) will be for you to provide the Assessor with the opportunity to benchmark your group’s understanding of the exercises.

Timing

The duration of the group presentation is 20 minutes (each team member presenting a different aspect of the exercises) includes 2-3 minutes question time (any member of the group may answer the question). Because the Client will be reviewing many presentations, the timing will be strictly reinforced. Therefore the planning of your presentation will be important to ensure it falls within the time limits.

Powerpoint slides

The Powerpoint slides should be directly related to your presentation – if they are unrelated and don’t support your presentation, then don ’t include them.

Diagrams are concise ways of conveying visions, management processes, structural layouts, etc – make use of them to support your oral presentation.

Don’t fall into the trap of reading from your slides – wordy slides belong in the Written Report (which can be read separately by the Assessor) and you only have 15 minutes total presentation time. Reading from slides removes your eye contact with the audience and this is very distracting to an audience.

Practice, practice, practice


Before the oral presentation, rehearse your presentation to your fellow group members (acting as Assessors). Make sure that your overall timing is within the allocated time limit and ensure that the timing of your Powerpoint slides match the timings of the relevant aspects of your oral presentation. Practice in front of non-technical students (from other faculties), friends, or family – this will provide a good technical versus non-technical content balance.

Questions, questions, questions Within your group, check what are the “weak” aspects of your concepts – what are they? Have suitable responses prepared in case the Assessor should ask these. Rehearse your responses so that they are conveyed in a confident, sincere and convincing manner.

Purpose The Oral Presentation and the Written Assignment are key deliverables within CIV3203 CIV2283. The contents of the oral presentation should mirror and reinforce the contents of the written report (& vice versa) – the two are closely related and shouldn’t be treated as separate exercises.

Presentation:

Speech: Clearly audible vs inaudible.

Stance Firm open & welcoming body posture vs closed body posture, lots of distracting movements.

Audience Contact: Good eye contact vs non/limited eye contact.

Use of gestures/movement: Effective use of gestures which matched content vs poor use of gestures.

Delivery: Sincere, enthusiastic vs superficial, monotonous

Organisation

Time Plan: Timing of presentation to fit within the allocated time frame.

Structure: Evidence of good preparation: clear logical structure (Intro. Body, Conclusion) vs no apparent structure and minimal preparation.

Use of Visual Aids: Effective use of clear visual aids vs poor, unclear visual aids, or no visual aids (where it would have been appropriate)

Content

Technical Content: Appropriate content targeted at the audience vs too general or too detailed (breadth vs depth balance).

Conveyed Context: Context/relevance of the project explained vs no appreciation of the `big picture"

Response to questions: Confident and knowledgeable response to questions vs shallow, evasive answers

Best of luck!

Date post:	17-Jun-2020
Category:	Documents
Upload:	others
View:	2 times
Download:	1 times

CIV3203/ CIV 2283 Civil Engineering Construction€¦ · 4. Written Assignment/Report by Project...

Documents