Designer/Contractor JV- Apron Services Projects- A Winning Case

The KAIA project Case Study

Introduction

The purpose of this presentation is to demonstrate :

• How early Engineer( designer/ Contractor coordination and cooperation can overcome the difficulties encountered

• Highlight unforeseen and foreseen difficulties and challenges encountered in the KAIA project

IntroductionAME- DEP JV KAIA back Ground and Scope of WorkProject Constraints Project Deliverables Project Procurement PlanSystems Design Conclusion

Designer / Contractor JV

• AME Background• DEP Background• AME-DEP JV and history of cooperation• DEP Role in KAIA:DEP is doing design – shop dwgs –

technical procurement submittals – construction management and cost control

Project Background and Scope of Work

• Client : GACA• Main Contractor : Saudi Bin Ladein Group – SBG• Apron Subcontractor – Al Mabani AGC• Apron Services Subcontractor – AME/DEP

Project Background and Scope of Work

1. Potable water treatment plants and potable water piping network from Tech. rooms to pits.

2. Blue water treatment plants and blue water piping from Tech. rooms to toilet pits.

3. Vacuum receiver plants and piping network.

4. PCA air handling units and corresponding under-gound ducting and PCA pits

5. Glycol chilled water plant rooms and networks.

6. GPU 400 Hz system and pits

Scope of Work:

Project Background and Scope of Work

Aprons 17-18-19 and PTB Area in scope

Project Deliverables

• Material Submittals• Design and shop drawings • Method statements• Monthly Progress Reports• O & M manuals • As Built Drawings • Testing and Commissioning Reports• Training • Warranties

Project Constraints

The main constraints challenging AME at this project are the following:

1. The short project duration which is by any standards is very tight for the scope of work at hand .

2. The different layers of upstream parties, mainly the CM and designers , and at a second level Main Contractor and Subcontractors

3. The Various unforeseen changes from the original tender design due to site conditions / project updated requirements / cost and time constraints

4. The delays in design / approvals / material

Project Constraints 5. The difficulty of direct communication between many of

the parties due to contractual constraints

6. The peculiarity of some of the specified items such as:• Vacuum drainage system • Glycol sub cooling method• SS PCA Duct for mobile ACU

7. The interface with other contract packages which could increase the number of unforeseen problems.

Why a Designer on Board is a Winning Case

1. The Complexity of the modern airport systems makes it necessary to do every bit of study and calculations and drawings to achieve a coordinated installation

2. To get seamless relations with the CM which is himself is an engineer

3. The various changes in design during construction due to site conditions requires a designer on board during the construction to find the proper solutions

4. When a Designer is in direct contact with the specialists / suppliers the design will be more customized and more understanding to the equipment strengths and weaknesses.

Examples of Unforeseen Difficulties1. Changes in the Client Requirements2. Suppliers uncontrolled supply delays3. Site level changes and various obstructions4. Differences in Contract requirements interpretations

Project Procurement Plan

AME has prepared a procurement plan relating to time and cash flow to suit the project schedule and technical requirements. The basic elements of this plan are :

1. Establishing a basket of reputable suppliers 2. Providing proper material submittals for approval3. Identifying long lead items and placing orders on time4. Delivering the material on site as per project schedule

H-Project Manpower Histogram

I-Communication Plan

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Why Centralized Apron Services

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tTypical Service– B-777

The Solution….Apron Services

LavatoryBlue H2090 KVA90 KVA PCAirPCAir

Note: Fuel Trucks shown Removed (Hydrant Fueling)

H2O

MARS GATES

• Multi • Aircraft • Ramp• System

Systems Design

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Vacuum System

Systems Design

Vacuum System

Systems Design

Toilet Pit

Systems Design

Vacuum Lines Profile

Systems Design

Glycol Chilled Water System

Systems Design

Glycol System Configuration

Systems Design

PCA Unit Installation Detail

26

PCAir and Potable Water Pits

PW ReelPit AccessPCA HosesValves

– Thermal Design– Civil works design and installation– Distribution Network– Responsible for Performance– Chiller Supply

Central Glycol Plants

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Systems Design

Potable Water System

Systems Design

Potable Water System

Systems Design

Blue Water System

Systems Design

Valve Chamber Detail

Service Pits (400 Hz) 32

Systems Design

Systems Design

33

The GPU ApproachPBB Mounted Reels or……Pits

Conclusion

An early designer intervention and close cooperation with the specialist / contractor is a key factor in the project success

Thank You