Methods Statement-Rev A1

Hyderabad International Airport Phase 1A Package 3 Passenger Terminal Building Works Attachment 9 to the Form of Tender: Construction Method Statement

Construction Method Statement TABLE OF CONTENTS 1.0

Introduction: Overview of Project and Scope of Work

1.1

Site Facilities and Organization

1.2

Construction - General

1.3

Passenger Terminal Building

1.4

1.3.1

Structural Concrete Works

1.3.2

Structural Steelwork Construction/Erection

1.3.3

Curtain Walling and Cladding

1.3.4

Roofing Works

1.3.5

Flooring and Finishes

1.3.6

Airport Village Fabric Roof

Air Traffic Control Tower Complex 1.4.1

Foundations & Structural Concrete Works to Main Shaft

1.4.2

Composite Tower Head Construction

Hyderabad International Airport Tender for package 3: Passenger Terminal Building Works Attachment 9:- Construction Method Statement

1.5

1.4.3

Glazing, Cladding and Roofing

1.4.4


ME&P installation 4

HVAC System

5

Electrical System

6A

Plumbing and Drainage System

6B

Fire Fighting System

7A

Low Voltage Systems - Building Automation System

7B

Low Voltage Systems - Fire Detection & Suppression Systems

8A

Elevators

8B

Escalators

9

IT Systems

10

Baggage Handling System

11A Passenger Boarding Bridges 11B Visual Docking Guidance System 12A Security Systems - Baggage and Passenger Screening 12B Security Systems - Access Control Systems 1.6

Furniture

1.7

Signage ~~~~~~~~~~~~~~~~~~~~~~~~~~

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1.0

Introduction: .

Overview of Project and Scope of Work Hyderabad International Airport Limited (HIAL), will enter into a concession agreement with the Government of India to design, finance, build, operate and maintain a Greenfield airport at Shamshabad in Hyderabad, approximately 20 km southwest of the Centre of Hyderabad. The Project is known as Hyderabad International Airport. The initial phase, Phase 1A, of the airport of this “Proposed International Airport Complex at Shamshabad” including the design, construction, testing and commissioning is due to be completed by the early of 2008. This Contract is one of the four package contracts for Phase 1A. The vision, formulated by the Employer, for the Hyderabad International Airport is to build an airport of international standards with emphasis on :

High standards of safety and security Functionality and flexibility High level of Service for the passengers Modern A\architecture Efficient operation and maintenance Environmental Friendliness Cost efficiency

The Works The Project works are organized into four works packages : i).

Package 1 :

Compound Wall Works

ii).

Package 2 :

Site Preparation Works

iii). Package 3 :

Passenger Terminal Building Works

iv). Package 4 :

Airside and Landside Works

The Contract works for “Package 3 – Passenger Terminal Building Works” comprises of the following facilities/areas :

Airport Village including pedestrian access bridges Underground access lobbies Passenger concourses Ticket offices

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Check-in islands Centralized security screening Security systems Immigration, customs and security counters Baggage Handling System (BHS) Elevators and escalators Baggage trolleys (airside & landside) Baggage trolley storage and recirculation areas Signage Office Shops Restaurants and fast food outlets Passenger services Passenger lounges VIP / VVIP lounges Fixed passenger boarding bridges including ramp houses Moveable Passenger Boarding Bridges Bus gates for remote stands Aircraft Docking System Medical centre with 20 beds Airport Operations Control Centre (AOCC) Technical areas, stores and facilities for the employees / airlines staff in basement Technical shafts Airlines lounges and facilities Smoking rooms Left luggage facilities First aid rooms Unloading bay Technical infrastructure Glass & Maintenance Equipment BAS and SCADA IT Systems Airport Community Network (ACN) Flight Information Display System (FIDS) Common User Terminal Equipment (CUTE/CUSS) Apron Management System Airport Operational Database (AODB) Airport Management Administrative Network

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Billing System Master Clock System Public Address System (PA) Master Antenna Television System (MATV)

Scope of Contract Works The contracted works for this Contract, Package 3, contains those for Passenger Terminal Building, Airport Technical Complex and Cooling Tower at car park. There are seven levels designed for the Passenger Terminal Building, namely, Level B at -5.00, Level C at –0.40, Level D at +3.50, Level E at +7.50, Level F at +12.50 and two office levels Level G at +16.50 and Level H at +20.50. There are two levels designed for Airport Technical Building, ground floor level at 0.00 and first floor level at +4.50. Whereas the ground floor level of the Airport Control Tower is at 0.00, first floor level at +3.00, then followed by an ellipse and tapered core wall structure from first floor level up to +54.00 approximately. An inverted cone structure is designed to be constructed on top of the core. There are five levels within this cone structure, at levels +54.00. +57.00, +60.00, +64.00 and +67.40 respectively. In general, for both the passenger terminal building and airport technical complex, the scope of work comprises the design, construction, testing and commissioning, integrated testing with the Related Works Contractors for the following elements : RC foundation, basement and superstructure Wall, floor and ceiling finishes Structural steel roof and coverings External enclosure/façade E/M installations HVAC system Electrical systems Plumbing and drainage systems Fire fighting systems LV systems including the building automation system and fire detection & suppression system IT systems as mentioned above Baggage Handling System Passengers Boarding Bridges Visual Docking Guidance System Security systems Baggage & Passenger Screening Access Control Systems

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Furniture Signage

Site Constraints Key Performance Indicators and Coordination with Related Work Contractors Originally, 21 Key Performance Indicators are specified by the Employer in Part C, Appendix 6 of the Form of Tender. However, it is noted in Tender Addendum No. 2, the Employer has amended some requirements of the Key Performance Indicators and increased to 28 nos. These Key Performance Indicators have set the deadlines, from Notice to Proceed, to complete a particular section of Works within the Contract. Noting from these Key Performance Indicators, the completion of the Works in stages to achieve these milestone dates is critical for the coordinated and integrated work sequence for all work packages, which contributes to the timely completion of the Project. It means that the contract works is to be carried out in parallel with the Related Contractors’ Works and also coordination with Indian Government Authority to obtain approval, which include :

Package 2 Contractor for site preparation works Package 4 Contractor for airside and landside works Landscaping Contractor for landscape works Airport Authority of India for design and building works coordination Statutory Authorities Retailers and Concessionaries

The timely design and construction of the contract works, such as the structure construction, roof structure/coverings, etc. will highly depend on the extremely close coordination with the Related Work Contractors and Statutory Authorities. This will be the crucial elements contributed to the timely and successful completion of this airport project. In order to ensure the timely and successful completion of the project, the following measures will be implemented :

One design/coordination team will be set up on site basis for the coordination with Related Works Contractors and the Statutory Authorities. The team members shall include the coordinators within the design and construction teams for structural, architectural, IT, security and E/M aspects.

Regular meetings will be held to discuss and coordinate the design and construction aspects in order to avoid any discrepancy between the design and construction among the different packages.

Ad hoc meetings will be held to discuss any particular issue or to promptly solve any problem identified.

On site coordination will be arranged regularly or daily whenever required to solve

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the site problem encountered during the site works proceeding. These Key Performance Indicators will be elaborated in more detail in the programme narrative submitted together with the initial Programme and master programme and shown in Attachment .

20 Site Facilities Site Access The access to site is leading from a highway north of the airport site area, via a temporary site road to the Site office area, as indicated in tender drawing no. 5410/T/CV-10-1007. It is also noted in the drawing that a common access corridor is running in east-west direction at the south side of Passenger Terminal Building and Airport Technical Complex. It is our assumption that the temporary site road will link to this common access corridor. All Related Works Contractors will make use this site road at the same times. Busy traffic flow on this road is expected. Coordination with Related Works Contractors will be arranged to coordinate the common use of this road to ensure a smooth traffic flow, especially during the concrete placing works for raft footings and basement slab at level -5.00, since a large concrete quantity of approximately 1600m3 is planned. The coordination will avoid, as far as practicable, large traffic flow of different Package Contractors occurring at the same time. Temporary site access will be formed from the common access corridor up to the areas around PTB and ATC, as indicated in our site layout plan. Temporary site access will be formed once the site areas are handed over by Package 2 Contractor. All construction vehicles for PTB and ATC works will make use of the temporary site access formed leading from the common access corridor. Noting from the contract documents, the area handover for PTB, Area A2 and ATC, Area A7a are not on the same date. Since Area A2 will be handed over earlier than A7a, the site access will be formed separately upon individual area handover.

Plant and Equipment

Tower Cranes 5 Nos. 4 tower cranes will be erected on four sides of Passenger Terminal Building whereas the remaining one will be erected at Air Traffic Control Tower Complex as shown in the attached site layout plan . Mobile Cranes 6 Nos. Mobile cranes will be employed for roof structure erection. Occasionally, mobile cranes will be employed to assist the RC structures construction. After the removal of tower cranes, mobile cranes will be employed to lift materials up to high levels, when necessary. Excavators 4 Nos. Excavators will be employed to carry out raft footings and basement slabs excavation after blasting completed. Excavators will be equipped with pneumatic hammers to

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loosen the rock lumps or break the rock into smaller lumps. Loaders 3 Nos. Loaders will be employed to load the rock lumps or soil material onto dump trucks for delivery to the batching plant or soil material to storage areas. Trucks 4 Nos. Trucks will be employed to deliver materials, such as soil material to storage area or off-site, formwork from fabrication area and steel bars materials from bending yard to the spot of use, etc. Trailer 2 Nos. Trailers will be employed for delivery of roof trusses from fabrication area to Passenger Terminal Building immediately before their lifting up to position. Crushing Plant 1 No. Hard rock lumps, as a residual from excavation, will be delivered to the crushing plant set up on site. Rock lumps will be crushed to small sized aggregates. The size of aggregates will be determined by the use, eg 20mm for concrete mixes, etc. Batching Plant 2 No. Batching plant will be set up on site. Concrete, as per the requirements designed, will be mixed in the batching plant for RC construction. Fork Lift / Bobcat 3 No. Fork lift / bobcat will be employed for the material loading and unloading at the storage areas during finishing work stage. It will be employed for the horizontal material delivery within the Passenger Terminal Building whenever required. Grader 1 No. Grader will be used to form the temporary site access at the early stage of the Contract. Concrete Pumps 3 Nos. Concreting works will be carried out mainly by concrete pumps and assisted by tower cranes or mobile cranes. Transit Mixers 6 Nos. Transit mixers will be employed throughout the RC structures construction for concrete delivery form batching plant to spots of concrete placing. Air Compressors 12 Nos. Air compressors will be employed to assist the trimming of rock surface down to formation level after bulk excavation carrying out by excavators. After the excavation works completed, one air compressor will be maintained on site to assist the cleaning works whenever required. Water Trucks 4 Nos. Water trucks will be used throughout the whole construction period to deliver water for the batching plant, concrete works, finishing works and also other miscellaneous uses. Concrete Cube Crushing Machine - 2 No

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It is planned that the concrete cube for all R C construction will be in a laboratory set up at site Generators12 No. Generators will be used throughout the first 14 months to provide temporary power supply for construction until the power is available from the power company.

.

Site Planning and Layout Site offices will be erected by the Package 2 Contractor in Area A1 as indicated in site layout plan. Subsequent to the office being handed over by Package 2 Contractor, setting up of office will take place at the first instance; and, the staff already mobilised will immediately move into the site office once ready. Works areas will be assigned at locations, to be agreed by the Employer, close to the Passenger Terminal Building and Airport Technical Complex areas as far as possible. The following major plants and work areas are planned to be set up on site : Batching Plant Steel Bar Bending Yard. Formwork Fabrication Yard. Roof Truss Fabrication Yard. Storage Area. Transportation route for heavy machine and equipements. Please refer to the site layout plan attached for reference. The above mentioned plant and site areas will be mobilised / erected on site upon taking over of the works areas.

Mobilisation After the date for ‘Contractor Appointed’, mobilisation will be arranged immediately. As the site office will not yet be handed over by the Package 2 Contractor (until after the first 1.5 months) only off-site activities could be arranged in the earliest days; and these will include the commencement of design work by the design team temporarily (and conveniently) located in Hyderabad. The Director-in-charge and Project Manager will organize the project team members. Staff involved in the design, commercial and project control staffing will be mobilised first, followed by the staff involved in the Construction, E/M Quality Assurance and Safety, Health & Environmental management. Once the design team staff are fully mobilised, design for the foundation and basement structure of the passenger terminal building will be started first, targeting the Key Performance Indicators and construction sequence. And, the design for superstructures will follow. Roof structures and covering design will start at the same time of superstructure due to the long lead time for manufacture and fabrication. Design for finishes, E/M systems, IT systems and security systems work activities will also start shortly after the

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structural design commences. The design for furniture and signage will be the last ones since they will only come in place at the relatively late stage of the Contract; and, like for all design items, the team will adopt a ‘just-in-time’ approach For more detailed information on design issues, please refer to the Tender Programme and also the submittal for cost centres submitted separately. Simultaneously, the health and sanitary facilities specified in Section – 5 : Employer’s Requirements – spec. Book 1 : General, such as the first aid facilities, wash facilities, latrines and urinals, shelters for rest, crèches, canteens, etc. will be erected on site at a designated area outside areas A2, A5 or A7a to be agreed by the Employer. Please refer the layout of their arrangement on our general site layout plan in the attachment..

Site Organization The project site staff will be grouped into the following functional teams as indicated in the organization chart submitted .

Management

Design

Control

Production

Services

Project Director (stationing in head office) will be the leader of all teams and assisted by the Project Manager and Assistant Project Manger to form the Management team. The main function of this team is to fully manage and control the project in all aspects. This is also the centre of decision making. All project site staff shall be fully accountable to this management team. And, one of their important roles is to closely coordinate with the Client’s Project Team and the senior management staff of the Related Works Contractors. Discussions and meetings for problem tackling in regards with any important project matters will be arranged with the Client’s Project Team. Design Team will be lead by our Contractor’s Design Coordinator together with the Architect, Designers and Engineers. Design consultant firm is employed to carry out the design activities. Architects, designers and engineers will be assigned by the design consultant. They will all be on site basis in Hyderabad and supporting by the design office in Hong Kong. All the permanent works and their relevant details will be designed by this team. The design will be produced in accordance with our tender programme submitted. An important role of this team is to coordinate with the design team of Related Works Contractors to ensure that the design by different Contractors are matching each other and fully integrated, in particular for the IT systems and security systems. Please refer to Chart H attached in the submitted Site Organization Chart for more details.

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Control Team is formulated by three sections namely, the Quality Assurance, Safety, Health & Environmental and Project Control. This team is directly responsible to the Management Team and to plan, implement and monitor the project in accordance to their special function assigned by the Management Team. As indicated in our site organization chart, each section has been assigned a specialty function as follows:

Quality Assurance section is responsible for all the quality aspects including the material control, quality control, document control and also drawing control. Quality Assurance Manager will be assigned to lead this section. He will be assisted by engineers, inspectors and controller assigned to handle this specific function. Please refer to Chart A attached in the submitted Site Organization Chart for more details.

Safety, Health & Environmental section is responsible for the planning, training, implementation and monitoring of all the safety, health and environmental aspects within the project. Environmental Compliance Manager will be assigned to be fully responsible for the environmental and health aspects within the project. Project Site Safety Manager will be assigned to be fully responsible for the site safety aspects. Engineers will be assigned to assist these managers to carry out their assignment. Please refer to Chart B attached in the submitted Site Organization Chart for more details.

Project Control Section is responsible for the planning and scheduling, cost control, quantity surveying and contractual aspects. Project Control Manager will be assigned to lead this section. He will be assisted by QS Manager, Project QS, Contract Administrator, engineers, programmer and scheduling officer to perform the assigned functions. Please refer to Chart C attached in the submitted Site Organization Chart for more details.

Production Team is formed by frontline personnel to carry out the daily construction activities. There are two sections within this team, namely the builders’ work section and E/M section. These sections are organized to carry out the different construction functions, builders’ works and E/M installations as follows :

Construction Superintendent will be assigned to lead the builders’ work section and supported by construction managers ,site agents, package manager, engineer supervisors, foremen and surveying personnel for the builders’ works of Passenger Terminal Building and Airport Technical Complex. The supporting staff will be responsible to carry out site operation including the structural and finishing works and also arrange works for the subordinates. They will coordinate and monitor the installation works by specialist subcontractors and liaise with the E/M Section to arrange for the builders’ works required for E/M installations and also including those for specialist subcontractors, IT systems and security systems. This section will also be responsible for the daily coordination with the Related Works Contractors on the site construction issues. Please refer to Chart D attached in the submitted Site Organization Chart for more details.

E/M Manager will be assigned to lead the E/M section and supported by engineers,

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assistant engineers and technicians. They will be responsible material and sample submissions, work coordination for the E/M systems, IT system, security system and also any E/M installations of the specialist subcontractors. They will also coordinate with the builders’ work section and monitor the provisions for E/M installations. This section, same for the builders’ work section, will be responsible for the coordination with the Related Works Contractors on the installation issues. An assistant manager will assist the manager and be fully responsible for a close and timely coordination with the Related Works Contractors. Please refer to Chart E attached in the submitted Site Organization Chart for more details. E/M subcontractor will be employed to carry out the E/M installations. Please also refer to Chart I attached in the submitted Site Organization Chart for reference. Services Team is assigned to assist the different teams in the project organization, especially the production team. This team will be formed by two sections, the Engineering / Technical Section and Commercial Section. They will carry out the following functions :

3.0

Engineering Manager will be assigned to lead the Design and Technical Section. He will be supported by assistant engineering managers, engineers and assistant engineers. This section will be responsible for the material & samples submission, temporary works design & as-built drawings production, design coordination and also the coordination with Related Works Contractors whenever required. An assistant engineering manager will be assigned to assist the manager and fully responsible for the close and timely coordination with Related Works Contractors. Please refer to Chart F attached in the submitted Site Organization Chart for more details.

Commercial Manager will be assigned to lead the Commercial Section with the assistance of the procurement manager, accounting manager, H.R. manager and also the officers, technician, clerks, secretaries, administrator, supervisors, etc. The responsibility of this section is to handle the procurement, accounting, human resource and administration issues within the project site. Please refer to Chart G attached in the submitted Site Organization Chart for more details.

Construction – General The Time for Completion allowed for this Contract is changed to 27 months after the ‘Notification to Proceed’ is received by the Contractor, as stipulated in the ‘Contract Particulars’. It is noted from the Employer’s ‘Project Master Programme’ that the Airport Opening is anticipated at early days of the 34th month. Therefore, it is anticipated that the ‘Notification to Proceed’ will be received by the Contractor in the early days of the 1st month. The ‘Project Master Programme’ also indicates that the Package 2 Contractor will handover the areas to the Package 3 Contractor in the following sequence : Site office area, Area A1 as indicated in tender drawing no. 5410/T/CV-10-1007, at the beginning of 2nd month, which is less than 1.5 months from the date of ‘ Notifica-

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tion to Proceed’ for Package 3 Contract. This should be 112 days after ‘Notification to Proceed’ for Package 2 Contract . Passenger terminal building (PTB) area, Area A2, at end of the 2nd month, which is about 1.5 months from the date of ‘Notification to Proceed’ for Package 3 Contract. This should also be 119 days after ‘Notification to Proceed’ for Package 2. Area A5 will be handed over at the end of 3rd month, which is approximately 2.5 months after the date of ‘Notification to Proceed’ for Package 3 Contract and 154 days after the date of ‘Notification to Proceed’ for Package 2 Contract. Airport Technical Complex (ATC), Area A7a, at the end of 6th month, which is about 5.5 months after the date of ‘Notification to Proceed’ for Package 3 Contract and 238 days after the date of ‘Notification to Proceed’ for Package 2 Contract.

There is a requirement in the tender documents that about 3 months’ time before the Completion shall be allowed for the airport operation trials. The construction works, including the integrated testing & commissioning with the Related Works Contractors, shall therefore be completed within the 30th months. If also taking into account that PTB area, Area 2, will be the first area handed to Package 3 Contract for construction, approximately 1.5 months after the ‘Notice to Proceed’ received by the Contractor as indicated in the Employer’s Project Master Programme, works for this Contract shall be completed within 28.5 months.

Setting Out Teams of experienced surveyors, lead by the chief surveyor, will be employed to provide the basic setting out, base lines and benchmarks at the suitable locations within the basement areas. Theodolites and steel tapes shall be used for the setting out works as the basis to be used for further detailed setting out. Another set of base lines and benchmarks will be set onto the above ground structures before proceed the backfilling to basement levels. Surveyors and chainmen will also be responsible for further detailed setting out and leveling for the raft footings and basement structures. For some critical base lines and setting out marks set out by surveyors and chainman, the chief surveyor will carry out counter-checking before they will be used for further setting out or construction activities. It is a basic principle that the correctness of setting out serves as a vital element for the correct construction for the Contract. A checking system will be formulated to ensure the correctness of works. These base lines and benchmarks will be regularly checked by the chief surveyor to ensure their correctness. Theodolites and steel tapes will be calibrated at regular intervals to ensure the correctness of these equipments. Independent Survey’ Surveyof India’ will be deployed to verification of the initial baseline and the benchmark once the control point is established at site.

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Excavation / Site Formation PTB It is noted from Package 2 drawings that bulk excavation for PTB (and ATC) will be carried out by the Package 2 Contractor prior to their handover to the Package 3 Contractor. Generally speaking, at the time of handover by the Package 2 Contractor, the formation level will be excavated down to approx -5.00 level for the basement level of the Passenger Terminal Building and level 0.00 for the ATC Technical Complex. It is noted from drawing no. 5410/T/ AR-10-1011(R1) that the area around the Passenger Terminal Building will be formed down to +607mpd approximately during site formation works; and this level is also designated as Level 0.00 in other tender drawings. After the ‘Notification to Proceed’ is received from the Employer, mobilization will be arranged immediately as stated in ‘Mobilization’ above. It is so planned that the PTB area is to be divided into three zones, namely: Zone 1, Zone 2 and Zone 3. The designation of the zones for excavation activity is as follows: Zone 1 - gridlines 46-58/V-R, Zone 2 - gridlines 46-58/R-K, Zone 3 - gridlines 46-58/K-D Excavation for the footings and basement slab at level -5.0 will be proceed in direction as follows : From southeast to northwest in Zone 1; From east to west in Zone 2 ; From west to east in Zone 3. Final trimming of formation to the designed level will be carried out by manpower assisted by excavators. It is expected that an output of 2000 m3 approximately by using 20 excavators could be achieved daily. Disposal of Excavated Soil The preferred method of excavated material disposal is to make use of the material obtained from excavation for construction works, for example backfilling material, temporary road formation,, etc. This arrangement will be most beneficial to the project. Should there be the case that the material is in surplus, excavated materials will be selected and stockpiled on site for future backfilling purpose as far as practicable or transfer to another site for use in construction activities. Any unsuitable material will be hauled off site using dump trucks. Anti-termite Treatment After excavation and final trimming of any individual zone is completed, anti-termite

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treatment to the native ground will be carried out in accordance with local best practice and the Specification. 3.1

Passenger Terminal Building 3.1.1

Structural Concrete Works

The construction of the basement at Level B -5.0. The construction method for the basement will be elaborated hereunder. The basement will be sub-divided into 3 zones in the same way as for excavation works, as well as direction of construction. Construction work will proceed in sequence of Zone 1 immediately after the excavation work within the area is completed. Zone 2 & 3 will commence after works in Zone 1 is completed. Timber formwork will be used for the stop ends of the footings and construction and expansion joints. For the structural construction work above Level -5.0 slab, steel formwork will be used for columns. The column formwork will be fabricated into panels in the factory and bolted together on site. The formwork will be strutted against the concrete floor slab already cast underneath. For beams and slabs construction, timber formwork, steel/timber joists resting on steel frame scaffolding will be adopted for supporting the timber beam and slab formwork. Timber formwork will be used for wall construction. The intention is that columns and external walls will be constructed separately from the beams and slabs, whereas the external walls will be constructed simultaneously with the associated beams and slabs. The above method for constructing columns, walls, beams and slabs will be adopted throughout the whole RC construction for PTB structural elements. Achieving watertightness for the structures of the basement construction is an area of concern. A waterproofing system will be installed as required by the design and in full compliance with the manufacturer’s recommendations to ensure water-tightness of the basement. Water-stops will be provided to all construction joints connecting the external basement walls and slabs at both Level -5.0 basements. Also, waterproofing treatment, if required by the designer, will be provided to construction joints between concrete bays during basement slab construction, following the details designed by the architect / engineer. Construction joints will be prepared and laitance removed for good connection between bays of construction. Either stepped joint or keys will be provided at the location of construction joints.

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Ground Slab at Level -5.0 After excavation and anti-termite treatment for either Zone 1 or Zone 3 is completed, construction of footings and the basement slab at level -5.00 will commence. Zone 2 will start as Zone 1 is completed. Each zone will be divided into bays of 36m x 45m maximum. The intention is that the basement slabs at Level -5.0 will be constructed simultaneously with the raft footings of each particular bay. Blinding layer concrete will be laid after the formation is prepared and maintained free from water. Steel fixing work will be completed before the side or stop-end formwork for the basement slab or construction joints is erected. Steel fixed and formwork erected will be checked by QA personnel before concrete placing takes place, all in accordance with QA procedures laid down in the Quality Plan and Manual.

Superstructure There are two main levels: Level E at +7.50 and Level F at +12.50. Besides these, there are two office levels at +17.50 and +20.5 respectively. The areas of the Passenger Terminal Building will be divided into three zones. The construction will proceed in sequence according to that shown in attached sketch Nos. SK-07 to SK-10 and further described below. In view of the movement joints designed by the Designer as shown in the attached layout plan no. SK-01, the area division for PTB superstructure will differ from that at Level –5.00 but will follow that for Level –0.40. The division will comprise the following zoning :

Zone A - gridlines 46-58/V-J, the movement joint adjacent gridline M; Zone B - gridlines 29-35/J-Aa; and Zone C - gridlines 35-75/J-Aa.

Construction of Level -0.4 to Level +7.5 In order to achieve the Key Performance Indicators stipulated in the contract documents for providing access to ALS Contractor in due sequence of Areas P7, P1, P4, P6, P8, P2, P3, P5 and P9, the construction will be sequenced as follows :

Zone A will proceed with gridline V-S and gridline M-J together, followed by gridline R-M; Zone B will proceed with gridline 46-54 and gridline 29-39 together, followed by gridline 39-46; Zone C will proceed with gridline 54-61 and gridline 68-75 together, followed by gridline 61-68.

The intention is that the superstructure construction will be divided into bays of 36m x

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45m approximately. By adopting this principle, it is estimated that there will be 8 bays within Zone A, 6 bays within both Zone B and Zone C. It is planned that at least 3 to 4 bays within each zone will be constructed at the same time. As mentioned above, the construction of columns and beams / slabs will be carried out separately. After the floor slab of an individual bay is cast, the columns of the following level will start on the following day; and the falsework for the beams and slabs above will commence simultaneously. Propping below a completed slab will only be removed in accordance with a schedule agreed with the Designer in order to protect the integrity of the newly cast concrete.

Construction of Level +7.50 to Level +12.50 The area division will be the same as the construction for Level -0.4 to Level +7.50. But, it should be noted that construction of Level +7.50 and Level +12.50 slabs at gridline 61-64/A-G will be deferred to a later stage to provide access and working area for roof truss structure erection. These slabs will only be cast after the main roof trusses at gridline 38-62/Ac-K are all erected.

Construction of Level 12.50 to Level +17.50 and Level +17.50 to +20.50 Similarly, the construction of these two levels will also be deferred to allow the roof structure at gridline K-U/46-58 to be erected. The intention is that, for reasons of safety management, these levels will be constructed after the whole roof structure, including main trusses, secondary trusses and infill members above are fully erected.

Insitu concrete of suspended beams and slabs Working closely with the Designer, China State will actively contrive the use of traditional method to expedite the construction of elevated beams and slabs. Moreover, this traditional rnethod will be more safe during local Indian construction..

Structural Steelwork Construction/Erection

Truss design

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In its simplest form the roof structure for the PTB roofs comprises 6 main trusses for the northern, landside roof and 12 for the southern, airside roof. All trusses are set at 18m centres and span 45m between concrete columns; and all have 16m+ cantilevers on both ends. The supports for each truss differ in level by over 7m; and the north and south roofs are handed. Lateral trusses span 18m @ 6m centres between the main trusses and bracing panels, again @ 6m centres span between the secondary trusses. Edge trusses, supported by short lateral cantilevered frames complete the main roof steelwork. The northern building is designed to be expandable in the easterly and westerly directions in subsequent phases of construction outwith Package 3. However, given the slenderness of the trusses in plan, more numerous, lighter twin boxed trusses are preferred for stability during erection. The layout of the transverse trusses and bracing can be varied without compromising structural integrity or architectural considerations. In any case the methodologies remain similar. Wherever possible, the materials will be sourced from the Indian subcontinent; but welding, welding inspection and construction methods will be carried out to relevant international standards in terms of quality, safety and environmental aspects, all as required by the tender documents.

Fabrication - Introduction The trusses are of a size that precludes total offsite fabrication; but steel fabrication of elements of the trusses will take place in the factory of a major steelwork supplier/subcontractor. The subcontractor will deliver the elements to site in sizes designed to maximise logistical efficiency and minimize disruption to local communities and their way of life. The above notwithstanding, the elements will be fabricated in sections as large as is practicable; and all sections will be grit blasted and primed ex-works with a holding coat applied to the prepared ends for welding following established good practice. Steel fabrication on site will take place under factory conditions, employing the same subcontractors, his equipment and personnel.

General Arrangement of Truss Fabrication and Storage Yard The trusses will not be assembled in the vertical position for the reason that the support points in the final condition are at levels differing by more than 7m. However, the trusses would be assembled with both support nodes at grade to avoid the need for extensive temporary works staging. The result would be that vertical members would not be vertical during construction; and, more importantly, horizontal members would be inclined. This leads to problems with safety and quality control. The solution is to lay the trusses flat, complete assembly/welding/bolting, and then raise them up to the vertical for boxing up (by the inclusion of permanent lateral bracing, moving into storage and ultimate erection. It will, however, be possible to consider raising the trusses in three sections to reduce craneage requirements: main span + two cantilevers for final connection before moving into storage. It should be noted that the completed truss is around 75m long; and that, laid down, the enclosed rectangle is approximately 80m x 10m (allowing for the fact that the second roof is handed). The surrounding area shall

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also be also paved. The general method and sequence of work is as follows: 1. 2.

The flatbed fabrication area is constructed and provided with slots to allow the lifting of derricks all facilities provided for fabricating, including: welding machine houses; lift-in wind and rain shelters; Tower crane may be used for fabrication, and Derrick Hoist for raising to the vertical; Jigs, provided as an aid to accuracy and repeatability; and semi permanent reference lines are provided to indicate true vertical and horizontal; roll over stools for raising trusses to vertical by gantries or yard cranes; stores and safety & welfare;

3.

the trusses are assembled and welded in the ‘laid down’ position, but resting on blocks sufficiently high off the flat bed to allow welding to go on under the section without compromising the integrity thereof; 4. as work proceeds, the welds are checked and certified by an independent testing agency, using ultrasound or other techniques and at a frequency in accordance with the relevant International Standard in the IS 800 series, proposed by the Designer and approved by the Quality Manager and the ER; full quality records will be kept, allocating each truss and each node member with a unique reference number against which all details of the work are recorded; 5. as each truss (or section of truss) is completed, the shelters are removed; and the gantries or cranes raise them to the vertical position, bearing against the rollover stools; a series of “foldaway” A-frame props will be raised, ready to receive and prop the raised truss; 6. The gantries or tower cranes will then be used to assist in installing the internal bracing which forms part of the lateral trusses; and sufficient such bracing will be added until the boxed truss assembly is stable for moving safely as a single unit; 7. the truss assembly will first be placed on temporary stools on plinths in the “paint repair yard” portion of the storage area and provided with shelters under which the welded joints will be prepared for painting in accordance with the specifications; this will include localized blasting but with previously primed sections protected against damage; 8. following this “paint repair” operation, the boxed truss will then receive its final layers of paint; two painting beds will be established so that there is always a place available for the next truss fabricated; 9. painted trusses will then be moved into storage on temporary stools resting on the concrete plinths; ‘close storage’ of the trusses for maximum yard efficiency will be employed, typically with 500mm between; 10. mobile crane will be provided in order to provide flexibility in the yard, but also to allow the use of one set in distributing the trusses onto the roof into their final positions; it will be seen that this provides the opportunity for mobilisation of the

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transportation and positioning systems, including necessary learning curves, to be carried out in the yard in advance of the roofs being ready; and hence these operations should be off the Critical Path.

Truss Erection The trusses in storage are in a ‘false alignment’ in elevation in that the support points are at similar levels. In their final positions in the roof, the support points will be at different levels, requiring the erection cranes to establish the true relationship before the main lift is carried out. The trusses will be winched into position adjacent to the building and passing between two 60t tracked or mobile cranes. After both cranes have taken up the load, the yard bogies will be withdrawn as will the temporary bracing (which would be at the wrong orientation after subsequent revolution of the trusses). One of the cranes will then lift the ‘high end’ of the truss until the correct, final orientation is achieved; and temporary works and indicators will guarantee the correctness and repeatability of this operation. For safety reasons, it is imperative that both cranes operate in concert with each other. (Single trusses shown for clarity)

Trusses moved from storage and rotated to final alignment

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Fabrication, storage and distribution of steel trusses Two scaffold towers outside the eastern building line support the ends of the rail system which will also be used to carry the truss delivery across the roof. The derrick hoist are supported across the building on continuous scaffold and prop erected on the Departure Level slab. The external towers will house a solid support onto which the cranes will lower the boxed trusses. The derrick hoist will be in position of the truss to be erected.The truss is winched to its final position with much of the lateral trusses and bracing already in place within the boxed truss to give it the necessary stability. Once connected, the derrick hoist can be dismantled and re-erected at the next location and the start to await the next boxed truss. The remainder of the elements of the lateral trusses and bracing are placed by tower crane in 6m sections. The tower cranes are also used to install the final north-south bracing between the lateral trusses.

Curtain Walling and Cladding Curtain walling and cladding system is designed as the external enclosure along the whole perimeter of the Passenger Terminal Building, Technical Building, ATC Tower head and also the link bridge. Subcontractor will be employed to carry out the manufacture, fabrication and installation of the whole system. Upon award of the Sub-Contract, the Sub-contractor shall develop detailed design of the Facade Systems in accordance with the design intent and shall submit for approval. The Sub-Contractor shall also warrant the suitability of all selected design, materials and installation works for a period as stated in the Employer’s Requirements. The Works shall be fabricated and installed in accordance with shop drawings reviewed without objection and within the prescribed construction tolerances set out in the Employer’s Requirements and the Specification. Prior to the commencement of any section of the Works, the Sub-Contractor shall be required to carry out a detailed inspection and ensure that the existing structure is satisfactory for his purpose having due regard for all the conditions and requirements of the Specification. It shall be the Sub-Contractor’s responsibility to take all necessary site measurements and to check all adjacent structure to the Works or from which the Works are supported. Full allowance shall be made by the Sub-Contractor to accommodate all necessary adjustment within the specified limits. The external enclosure for the PTB will commence upon the completion of the relevant roof truss structures and in the following sequence :

Upon completion of roof 1 steel structure at G.L. 46-58/K-U, Zone A works (from gridline 46z-57z/V-G) will commence at gridline V first as Area P7 is the first area to provide access to ALS Contractor. Installation at gridlines 46z and 57z will follow. Upon completion of roof steel structure at 29-38/Ab-H, Zone B works (from gridline

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29-54/A-G) will commence at gridline A first proceeding west to east from gridline 54 to 29. Then works at gridline 29 and gridline G will follow. Upon completion of roof steel structure at G.L. 62-75/ Ab-H, Zone C works (from gridline 54-75/A-G) will commence at gridline A first in similar principle as for Zone 2, works proceeding east to west from 54 to 75. Then works at gridline 75 and G will follow.

Procurement Immediately after the Notice to Proceed received by the Contractor, procurement of Subcontractor will start immediately. After the subcontract awarded, Subcontractors will carry out their detailed design and prepare the shop drawings for approval. When the shop drawings are either approved or only minor comments received, materials purchasing will start.

Manufacturing and Delivery All materials, including the metal profiles, glazing, panels, etc. will be manufacture in factory in accordance with the approved shop drawings. Materials will be delivered to site in several packages to match the installation on site. The manufacturing and delivery schedule has been considered and incorporated into the Tender Programme, submitted separately in this tender.

Preparation and Setting-out Double layer scaffolding will be erected to provide a safe working platform. Workers will make use of this working platform for fixing the curtain wall and cladding onto the building RC structures. Working platform for ATC tower head curtain wall installation will be erected on top of the temporary support, previously installed at the lower floor level for the structure construction. All temporary working platforms will only be removed after all testing and cleaning works completed. Work areas will be cleared before allowing subcontractor to start the installation work. Subcontractor will be invited to carry out a joint site inspection to ensure the area is ready for the installation. Our surveying team will set out the baseline and level marks for Subcontractor’s reference and use. Joint survey with Subcontractor will be arranged afterwards to confirm the correctness of these baselines and level marks. Correct setting out will be a crucial issue for the installation of the curtain walling and cladding, particularly for the installation at PTB, since the installation work is divided into three zones. The correct matching of the installation at the intersect points is critical. Before the installation work commences, the specialist subcontractors will be invited to carry out joint surveys to ensure the correct installation of the external enclosures.

Installation for PTB and Technical Building Material will be delivered from storage area to the spot of installation immediately before their installation to avoid unnecessary damage. Material will be delivered horizontally to the spot by mobile crane and vertically by chain blocks supporting on the roof structure. Protection will be provided to eliminate any possible damage to the finished roof structure.

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After setting out completed, the installation of the curtain walling and cladding will start in the following sequence :

Steel brackets fixing onto the building structure,

Steel supporting sections and aluminium mullions fixing onto the brackets,

Aluminium transoms fixing onto the mullions,

Glazing, aluminium composite panels, louvers and extruded silicon installation.

Thermal and fire-seal insulation installation,

EPDM gaskets, joint sealant and decorative capping installation.

Installation for ATC Tower Head Material will be delivered horizontally to the spot of installation by mobile crane and trucks whereas the vertically delivery by tower crane. Embeds for supporting the curtain walling will be cast-in during R.C. structure construction. After setting out completed, the installation of the curtain walling and cladding will start in the following sequence :

Steel space frames fixing onto the embeds at perimeter of floor slabs,

Stainless steel spider fittings fixing onto the space frame,

Structural glazing installation,

Structural sealant application.

Installation for Link Bridge Material will be delivered both horizontally and vertically to the spot of installation by mobile cranes. After the steel link bridge installation and setting out completed, the installation of the curtain walling and cladding will start in the following sequence :

Support fixing onto the link bridge structure,

Aluminium transoms fixing onto the supports,

Glazing installation,

Sealant application

Testing All tests will follow the procedures to the relevant international or Indian standards as stipulated in Clause 9.1 of Volume III, Section 5 : Employer’s Requirements – Spec. Book 3 : Finishing Works. Water-tightness is an area of major concern, all exposed penetration and lapping will be sealed with approved sealant. Water test will be arranged after the installation of curtain wall and cladding completed. Please refer to Appendix 2 to the Form of Tender - the Tenderer’s Proposal for more details and the method of construction as required by Annexure A of the ‘Instruction to Tenderers’ for Cost Centre under Book 3.

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3.1.2

Roofing Works

Precoated corrugated metal sheet roofing is design for the roofing system for PTB and also ATC Technical Building. Waterproofing membrane over with thermal and acoustic insulation layers is part of the system as specified. Subcontractor will be employed to carry out the manufacture, fabrication and installation of the whole system. The laying of roofing works will commence immediately after the relevant roof structure installation completed and in sequence as follows :

for roof at G.L. 46-58/K-U,

for roof at G.L. 38-62/Ac-K,

for roof at G.L. 29-38/Ab-H, and

for roof at G.L. 62-75/ Ab-H.

Procurement Immediately after the Notice to Proceed received by the Contractor, procurement of Subcontractor will start immediately. After the subcontract awarded, Subcontractors will carry out their detailed design and prepare the shop drawings for approval. When the shop drawings are either approved or only minor comments received, materials purchasing will start.

Manufacturing and Delivery All materials, including the metal profiles, glazing, panels, etc. will be manufacture in factory in accordance with the approved shop drawings. Materials will be delivered to site in several packages to match the installation on site. The manufacturing and delivery schedule is carefully considered and incorporated into the Tender Programme, submitted separately.

Preparation and Setting-out Steel / timber sheet decking will be laid onto the steel roof structure to provide the safe horizontal access and working platform. Temporary railing will be provided at the perimeter of the working platform and edges of accesses, whenever required. Workers will make use of this working platform for fixing the roofing onto the roof structures. Steel frame scaffolding towers with staircase will be erected to provide the vertical ingress and egress from Level +12.50 up to the roof structure. But for ATC tower head, steel frame scaffolding working platforms will be erected. All temporary working platforms will only be removed after all testing and cleaning works completed. Work areas will be cleared before allowing subcontractor to start the installation work. Subcontractor will be invited to carry out a joint site inspection to ensure the area is ready for the installation.

Installation The roof installation will be carried out in direction as follows :

from west to east for roof at G.L. 46-58/K-U,

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from west to east for roof at G.L. 38-62/Ac-K,

from west to east for roof at G.L. 29-38/Ab-H, and

from east to west for roof at G.L. 62-75/ Ab-H.

Horizontal material delivery from storage area to the spot of installation will be by mobile crane and truck whereas the vertical delivery will be by tower cranes. After setting out completed, the installation of the roofing system will start in the following sequence :

Steel support frame for skylights,

Steel backing purlins fixing onto the roof steel structure,

Precoated corrugated metal sheet with insulations installation on top of the purlins,

Skylight glazing installation,

PVC waterproofing membrane laying.

Same as curtain walling and cladding installation, water-tightness is again an area of major concern. Particular attention will be paid on the welding and lapping of PVC waterproofing membrane. All exposed penetration and lapping will be sealed with approved sealant.

Testing All tests will follow the procedures to the relevant international or Indian standards as stipulated in Clause 10.1 of Volume III, Section 5 : Employer’s Requirements – Spec. Book 3 : Finishing Works.

3.1.3


The planning for and phasing of these works and the designation of areas completed as “clean areas” is fundamental in providing a quality product and “brand new” appearance upon airport opening. Finishes works will start after the falsework for the basement levels at –0.50 have been removed. Plant room areas in the basement levels will be treated as priority where majority of E/M and control system are located. After the debris in these basement levels is removed and the area cleaned, the internal finishing works such as masonry wall erection, wall plastering, floor screeding, etc. can commence. Finishes works above Level 0.0 will commence after the roof structures above completed. Besides the R.C. and masonry walls, there are also the glazed partitions. Base frames of the partitioning will be installed before the plastering works proceed. Concealed installations for internal drainage, fire services and other services will commence in parallel with the masonry work. Wall & ceiling plaster finishes works will follow. Subsequently, tiling and primer coat painting will also start. The tiling layout will be well coordinated on drawings and set out on site before tiles were laid. After the wet trades of finishes works and concealed E/M installation within a particular area completed, false ceiling installation will start. Other proprietary installations, such as

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cladding, glazing and wood panels will only installed after E/M major concealed installation, such as the air ducts with droppers, pipe works etc. completed. The quality of materials will be checked before installation and completed works will be properly protected, with plastic sheet covered with plywood board for proprietary installations and products. The proper procedures in preparing the material and in sequencing of works will be in accordance with the specification and manufacturers’ recommendations. The finishing works and the E & M services installation will be well coordinated to provide a good and acceptable appearance, which will be described in more detail in the section for E/M Installation, IT systems and Security systems, etc. (See below) For the critical rooms such as AOCC in the basement level and control room in ATC tower, etc., top priority will be given for the related fitting out and finishing works inside these rooms completed in order to ensure an early achievement of testing & commissioning and especially the integrated testing with related contractors. This has been taken into account in the preparation of the tender programme. Other installations, such as furniture and signage, will be installed in a relatively late stage of finishes and E/M installations. Successful and close coordination is crucial for the smooth progress of the work. The coordination process will be in three aspects: Firstly, all the works within individual packages undertaken by subcontractors shall be monitored to ensure progress in a timely manner and in accordance with the specifications / drawings; Secondly, works of individual packages shall be carried out in an integrated manner within the site constraints and in such a way that they are compatible with other packages. The space constraint is of particular concern; and thirdly, smooth interface during the site installation stage shall be ensured. Planning engineers will be assigned to take up the coordination and monitoring responsibilities of the installation of architectural finishing works. They will have the following responsibilities: Preparation of work sequence and schedules, in accordance with the time scale of the master programme, for issuance, submission / approval of shop drawings and submission / approval of material. These schedules will be used to record and monitor the date and status of each individual shop drawing / material submissions. Close co-ordination with the Architect to ensure timely issuance of design drawings. Close monitoring of subcontractors’ work to ensure timely submission, resubmission and approval of shop drawings. Checking of design drawings from the Architect, shop drawings from various subcontractors and builder’s work requirement drawings etc. Identifying discrepancies, if any, among drawings, organizing co-ordination meetings and sorting out solutions before commencement of work. Establishment of a detailed working sequence and time frame for subcontractors’ work especially for those works where inserts will need to be installed prior to cast-

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ing concrete. Regular coordination meetings with all relevant parties will be arranged to coordinate and monitor site progress. Ad-hoc meetings will be held to resolve particular site problems.

Scaffolding will be erected to provide a safe working platform. Workers will make use of this working platform for fixing the external enclosure onto the building RC structures. Please refer to Appendix 2 to the Form of Tender - the Tenderer’s Proposal for more details and the method of construction as required by Annexure A of the ‘Instruction to Tenderers’ for Cost Centre under Book 3. 1.3.6 Airport Village Fabric Roof The erection process comprises three elements;

laying out and fixing erection of steelwork and membrane dressing out and post tensioning.

The specialist supplier/subcontractor shall provide a risk assessment and erection method statement for the structure to the Contractor prior to going on site. Mobile cranes will combine with the tower cranes to construct the complete column/steelwork/fabric structure. As much initial work as possible will be done to prevent unnecessary delays. (Ideally, a spare day or days should be allocated at this point in case of delays).The weather can play a part in the erection programme. As in most roofing, even slight winds can cause delays, so this has been allowed for in the programme. Erection frames and jigs will be used in order to remove the need for joints and single width rolls will be preferred. Once the membrane has been hoisted, it must be gradually tensioned to 95 % of the final prestress tension. When this point has been reached, every part of the project must be checked for compliance with the specification and the manufacturer’s requirements. Finally, the membrane will be fully tensioned, checked again and signed off. It will be necessary to further tension the roof at a later date. 1.4 Air Traffic Control Tower Complex 1.4.6

Foundations and Structural Concrete Works to Main Shaft

The foundation design for the ATC tower comprises an 18m x 18m raft footing with individual column footings for the technical building. As the ATC tower is over 70m in height whereas the technical building is a building of two levels, the construction of the ATC tower will be of first priority.

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Based on the above principle, excavation will be carried out in the sequence: ATC tower and then the technical building. Excavation will be carried out by means of hydraulic excavators. The methods used for construction of the PTB will be adopted for construction of the technical building except that pre-fabricated slab formwork will be used for the construction of the waffle slabs. Also, in view of the particular characteristics of the ATC tower, listed below, the construction methods for this tower will require a different approach:

The tower is of height over 70m; The core structure is elliptical in shape and some end walls taper from ground level up to Level +54 approximately; An inverted cone design is adopted for the five floor levels on top of the core structure; Structural glazing for the terminal area control room at the uppermost floor is required to support the roof structure. The core structure starts from the ground floor at +0.6m; and construction of the core structure will proceed in modules of 3-metre height to match the modular design concept indicated in the tender drawings. The first portion of core structure above +0.6m will be carried out by means of timber formwork for the fixing of system formwork above and to make up the level for the 3-metre modules. Jump form technology will be employed as the formwork system for the tower core structure. Working platforms are incorporated into this system to provide a safe working environment. The weight of this formwork system is heavy, requiring that the erection and dismantling shall be crane assisted. One tower crane of 50 metres in jib length will be erected at a location in between the tower and the Technical Building for the erection and dismantling of this formwork system and also for the construction of the Technical Building

structure. There are a total of 18 cycles of the 3-metre module from ground to Level +54. The external wall above Level +48 is curving outwards so that the jump form system will not be deployed above this level. However, the working platforms will be modified to match the curvature of the external walls. Pre-cast concrete permanent formwork will be used for the construction of this curved external wall. Pre-cast concrete panels of approximately 3 metres in length will be lifted by tower crane and fixed onto and tied down to the concrete floor slab. Steel fixing will be carried out after the pre-cast concrete wall form completely fixed onto the concrete floor. Timber internal wall form will be closed after the steel fixing is completed and checked satisfactorily. After the wall formwork and steel fixing is checked satisfactorily, concrete placing will commence; and this will be carried out by tower crane and skip. The precast panels, similar to reinforced earth

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wall panels have the following advantages and built-in facilities:

the panels are factory finished in quality concrete, offering improved durability; such panels lend themselves to improved (architectural) aesthetics; the inner face is a full construction joint providing monolithic connection to the concrete backing, removing all risk of separation from the main structure; the joints are designed and arranged to avoid the development of corrosion paths to the main rebar and to exclude ledges or cavities which might be a haven for birds and insects;

the upper panels will be fitted with inserts which will be used for the erection of platforms for temporary use in the erection of the glazing/curtain walling;

such inserts will be factory fitted and designed for easy repair after use; however, they can also be provided with removable caps for use in long term maintenance and/or reconfiguration of the tower in future phases.

The work sequence and methods described above will be repeated for the construction of the external walls up to Level +54. 1.4.7

Composite Tower Head Construction

After completion of the core structure, construction of the inverted cone structure will follow. The design employs a R.C. beams and slabs in the conforming tender and a composite floor of steel sections and concrete floor slab in an alternative design for this inverted cone structure. For the conforming design, the same approach, steel frame falsework, timber formwork, etc. for construction of PTB R.C. elements will also be adopted here. It is also noted that there are floor beams and slabs projecting outside the floor edges below. For the construction of these projections, steel sections will be bolted onto the concrete floor slab to serve as a support to the falsework at the projections. Details of the steel section support will be designed by our engineer and finalized during the detail design stage. Alternatively, steel beams are designed to be supporting on the R.C. core structure or on steel trusses. Steel trusses will then be installed ahead of the steel floor structure at different levels as the supports. Steel floor structures will be fabricated in sections on level ground within reach of the tower crane. Steel plates will be welded onto steel sections to form a safe working platform and also serve as the slab formwork. Safety steel guardrails with toe boards will be fixed onto the steel structure to provide a safe working environment for the subsequent concrete work to be carried out on top of this steel structure. The fabricated steel structure will be lifted by tower crane and fix on top of the core and connected to the core structure or steel trusses. The heaviest member of the composite structures is approximately 2.5 tonnes in weight. The floor steel structure, as a whole, is found to be exceeding the capacity of the tower crane. Also in view of the necessary connections to the R.C. core structure or the steel trusses, the steel floor structures will be fabricated as a whole section in between the core structure or the steel truss supports.

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The weight of each section will be calculated to ensure it is within the lifting capacity of the tower crane. The sections will be bolted or welded together on the spot subject to final design. After the steel structure erection is completed, steel fixing and side form erection will be carried out for the concrete works. 1.4.8

Steel Roof/Bridge Structures, Glazing and Cladding

ATC Tower Roof structure installation will start after the concrete slab at control room level is cleared. The total weight of ATC tower roof structure is estimated above 60,000 kg. This has exceeded the lifting capacity of the tower crane employed for the installation. Therefore, installation in sequence of member by member will be adopted. The installation of the whole roof structure is expected to complete in approximately three weeks. 300 x 200 x 16 x 16 RHS steel columns will be fixed onto the concrete slab serving as supports for the roof structure and also mullions for the glazing and cladding. The columns will be installed in sequence one after another. Subsequently, the roof structure will be fixed onto these steel column supports. The heaviest steel member within the roof structure is approximately 4 tonnes in weight. Therefore, the roof structure will be erected in sequence of the 2 longitudinal and then 2 transverse 914 x 205 x 201 UB main members supporting on steel columns, and followed by the 610 x 229 x 101 UB centre beams. The remaining 914 x 205 x 201 UB mains supporting on these four main members and perimeter columns will be installed after the centre beams completed. Installation of 2 x 102 x 51 x 20 PFC bracings and also the 762 x 267 x 147 UB edge beams will commence after all the main members installed. Steel scaffold temporary working platform will be erected serving for working safety purpose. Subsequently, glazing and cladding will be installed after the completion of roof structure. A tower crane will be used to assist in the installation. Installation of the glazing and cladding of the tower head will be serviced from the temporary platforms mentioned above. The platforms will fully meet the requirements of the Safety Management Plan and will be accessed from the lowest level of the tower head structure. Safety is of paramount importance; and the installation, use and removal of these platforms will require the closest attention. Please also refer to the detailed installation method described for PTB. The gondola provided for the permanent maintenance programme will be designed to accommodate any loading due to temporary usage during the construction stage and that reasonably anticipated for the future. For ATC tower, glazing and cladding installation for the tower core will start from ground level upwards. Technical Building The construction of the R.C. structure for the Technical Building was described above. Subsequent to the R.C. structure being completed, structural steel post supports, north of gridline A, for the steel roof structure will be erected immediately. Clearing of first

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floor area will commence at the same time, followed by the roof structure erection. It is estimated that the total weight of roof structure would be over 100 tonnes. It is noted that the main members of the trusses are designed running east-west direction. The heaviest member would be SB1 at gridlines 1-5/F, weighing approximately 4.5 tonnes. In our planning that the roof structure will be installed in sequence on a member by member basis. An installation period around one month is expected. Main members, SB1 at gridline F, SB3 in between gridlines E-B inclusive and SB4 at and also north of gridline A, will be erected first and in the direction from south to north. After these main members are installed, the secondary members SB2 and SB4 will be installed, in between the main members, and these will be installed following the same direction from south to north. Finally, the infill members SB5 at gridlines 2-5/A-C and also the edge beams SB5 south of gridline F will be installed. The design for the roof structure is symmetrical for the east and west portions although handed. The installation method and sequence as mentioned above will be adopted for both portions. All members installation will be carried out by means of mobile cranes assisted by a tower crane. A tower crane will also be employed for the installation only when its service is not required for the ATC Tower construction works. External glazing and cladding enclosure, including dry stone cladding, installation works will proceed from ground level up and commence from south to north to allow the installation at the link bridge area to start at the earliest opportunity. Link Bridge A link bridge 18 metres long connects the Technical Building and ATC Tower at the first floor level. The link bridge is formed by a truss of RHS steel sections. 300 x 200 x 10 RHS are used for the main members. At the four corners of the truss, 250 x 150 x 8 RHS are used as the vertical members connecting the top chord and bottom chord on both sides. 200 x 120 x 6 RHS are used as the horizontal ties. 120 x 120 x 10 angles are used as the bracings for each span within the truss. There are 9 spans comprising the whole truss. It is estimated that the total weight of this link bridge is less than 10 tonnes. In view of the link bridge being of relatively light-weight, our planning is that the whole link bridge will be pre-fabricated on level ground, with all the members and bracings completed. After the R.C. structure of the building and the tower are completed, the elastomeric bearings will be installed on the ATC Tower supporting R.C. walls. Shims will be used to adjust the bearings into their final and correct levels. The position and levels of the bearings will be carefully checked by our surveyors. Once the bearings were checked in their final and correct positions and levels, underside of the bearings will be grouted. After the grouting under the bearing pads has achieved the designed strength, the link bridge installation will proceed. Mobile cranes will be employed for the lifting and installation. The link bridge will be shifted by mobile cranes to a position adjacent to its final installation position. The mobile cranes will then be moved and sit at the nearest location behind the truss. The link

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bridge truss will finally be lifted and installed onto the supporting bearings on the ATC Tower side and R.C. support on the Technical Building side in one operation. Jacking methods will be used to shift the truss slowly into its final and correct position and levels. After the final position and level of the bridge truss are set, bolting / welding to connect the truss onto the supporting bearings or R.C. structure will be carried out. Fabrication of Steel Members Our planning is that all members for the Technical Building and ATC Tower roof structures and also the link bridge will be fabricated at a location next to the ATC Complex. The ground will be leveled and paved to form a flatbed for the fabrication. Since the link bridge would be the earliest one to be erected and also no shifting and stacking for the truss will be required after fabricated, the link bridge truss will be fabricated as priority and at the closest location to the building / tower. Comparatively, the structure of the ATC Tower will take a much longer time to complete than that of the Technical Building; therefore, the roof structure for Technical Building will be erected earlier than ATC Tower. The members for the ATC Tower roof structure will be the last ones to be fabricated. The fabrication of these steel structures shall follow the same sequence as for the installation mentioned above. As illustrated in the programme, the roof structure and link bridge would be completely installed ahead of the completion of the ATC Tower R.C. construction. Therefore, the fabrication of the ATC Tower roof structure could commence after the Link Bridge and main members of the Technical Building roof are completely fabricated. 1.4.9


Flooring and finishes will start first in Technical Building, since the R.C. construction for Technical Building is ahead of that for ATC Tower. In view of the tight schedule of the construction of ATC Complex to achieve the Key Performance Indicators, the plant rooms within Technical Building will be treated as the priority areas. Falsework stripping will be carried out at the earliest possible. Plant room areas will be immediately cleared to allow the proceeding of finishing works. Resources, including all necessary labours and materials, will also be prior assigned to these plant room and control room areas in order to handover for E/M installations the earliest. Detailed planning and close coordination is also critical for achieving this target. The staff assigned for ATC Complex will pay particular effort and special attention to this requirement. Close monitoring and control by the Project Control Team is another mean to ensure the timely completion of the works. For the flooring and finishes works, similar approach as stipulated in item 9.3.4 above will be adopted. Please refer for more details.

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9.5

ME&P installation General There is a wide range of MEP items involved in this Contract, including E&M services and specialist and IT systems; and many of these items are airport oriented. Please refer to Appendix 2 to the Form of Tender - the Tenderer’s Proposal for details of the MEP designs and installations all prepared in accordance with Annexure A of the ‘Instruction to Tenderers’ for the Cost Centres under Books 4 through 12. Construction installation & sequencing Various phases of construction will be carried out with dedicated teams under the respective Construction Engineers. These Construction Engineers will be responsible for management of all site activities and resources as well as co-ordination with the Civil Contractor and HIAL during the both the construction and commissioning phases. They will co-ordinate all the construction activities with Engineering and Quality Control Teams to ensure that the work is installed in accordance with latest drawing revisions and agreed method statements and QC Procedures. As the construction installation activities near 75% attention will move from bulk installation to system completion based on the priorities and sequencing dictated by the Commissioning Team, punch listing, testing of systems and final close out will follow pre-determined priorities previously built-in and agreed with the Construction Manager and incorporated into the overall schedule. Sequence of works The overall sequence of works is dictated by the project milestone requirements as stipulated in the Contract Documents. Accordingly construction activities are scheduled to commence and progress in accordance with the milestone completion dates, great emphasis will be given to complying with the wild air provision dates and substantial completion dates. Works in each building area will start in line with the dates stipulated in the Project Programme of works and on each of these dates manpower and material resources will be made available for the corresponding building/area in order to ensure that construction works proceed in accordance with the requirement for the project programme. Construction Works In the programme development and in determining the activities duration, the target was to ensure the timely achievement of the contract milestone dates. The electrical and mechanical works will be carried out subsequent to the completion of

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civil structure. Necessary approvals of the builder’s drawing work in connection with both electrical and mechanical installations will be carried out. All the installation will follow the sequence of works as detailed in the approved construction programme. All MEP Works are classified into four broad categories: 1st Fix, 2nd Fix, 3rd Fix and 4th Fix as detailed in the work programme/sequence of works. These activities will be further detailed in consultation with Civil Contractor/ARUP. Installation Proposals The installation will be carried out under the control of the respective Construction Team. Installation specialists from certain manufacturers will also be utilised. The installation methodology is set out below.

Planning and Coordination During the planning stage, all relevant information about the assembly methods of the equipment will be examined to check the requirement for special tools as well as site requirement in terms of floor leveling, floor fixing methods and clearance. Detailed method statements will be prepared and agreed prior to any installation commencing. These method statements will clearly identify the proper sequence of working; highlight any safety risks and the action to be taken to mitigate these risks. Interfaces with Designated Contractors will be identified and recorded. The works programme will be developed to indicate that the works can be installed within the time restraints of the project.

Site Possession Prior to installation work commencing, a joint site survey with concerned people will take place to ensure that the area is suitable for work to commence. Generally all installation works are carried out concurrently with other building trade contractors and we will fully coordinate with them to avoid abortive work. Delivery Methods All equipment and materials will be delivered by lorry either directly to the installation site or to the works area. The equipment will usually be delivered with the shipping packing intact for protection during transit.

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All cranes, lifting pulley blocks and slings will be fully tested and certified and visually checked each time. All materials will be properly secured on the lorries. Movement from point of offloading to final location will be done by the use of lift trucks or skids, as appropriate, along the designated delivery routes. Installation All installation will be in accordance with the agreed Method Statements, Project Execution Plan, Quality Assurance Procedures, and Project Safety Plan to ensure the quality of installation. Prior to installation detailed Method Statements will be prepared including all QC “Inspection and Testing” Procedures, witness and hold points to ensure all Quality aspects are incorporated and the work is executed in a safe and professional manner. This is further explained in the following paragraphs. Particular points relating to specific elements of the works are given below for various cost centers. The heads are identified with the cost center reference in contract documents. MEP Cost Centres The following sections describe the methods and general approach for all the MEP Cost Centres 4 through 12. 4

HVAC System

4.1 Chilled Water system We will commence the installation of level B basement E & M services after the completion of structure for level B. After completion of supporting plinths/I-beams c/w necessary delivery access, chillers can be delivered and positioned on top of vibration isolators as scheduled and followed by closing of delivery access by builder.

Installation of chilled water pipework (including vent pipes) from chilled water pumps to chiller plant complete with necessary valves and fittings.

Cable tray and trunking installation between chiller control switchboards to chiller plant

Installation of trunking / cable tray for power to chiller control switchboard.

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Laying of power cables interconnecting switchboards and chillers

Installation of local small wirings and insulation test

Water leakage test for the pipe before insulation.

Installation of the associated control panel for Chillers.

Terminations of

Fixing of local distribution base boxes and local small wirings followed by insulation tests.

HVAC Electrical Systems.

For the installation of chilled water pumps, the inertia bases of the pumps will be checked to confirm correct positioning and installation. The checking of the free impellor rotation shall be performed prior to installation. The pumps will be securely fixed in the inertia bases and base elbows fitted are required. Manufacturers specific instructions will be followed. Pump alignment will be checked. Pipework vibration isolators will be fitted on the suction and discharge side of each pump. Each pump will be fitted with an isolating valve and strainer on the suction side of the pump, and an isolating valve and non-return check valve on the discharge side. The pipework assembly shall be separately supported and anchored such that no load is imposed on the pump assembly. Upon completion of the system, and after all pressure tests have been carried out, the system will be commissioned , if necessary water and power supply are available. 4.2 Ductwork Ductwork will generally be installed in sections using duct hoists and scaffolding. Screwed drop rods will have thread adjustment in either direction after leveling of ductwork and associated plenum box’s etc. Ducts will be supported within 300mm of mating flanges or joints. Ductwork passing through non fire rated walls and floors will be adequately supported on either side. The Supervisor will ensure that there are no dents, distortion or buckling of ducting during installation being aware that damaged sheet metal work will be rejected. The Supervisor will ensure that there are no sharp edges or corners on the outside of the ductwork. Ducting will be installed allowing sufficient space for expansion/contraction and thermal insulation. Ductwork will be assembled using a proprietary flanging system. All connections to plant and equipment will be made using flanged joints. All square

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bends will have turning vanes. Continuously check horizontal and vertical alignment of ductwork and compliance with construction drawings and specification requirements by using spirit level plumb or other suitable instrument. Silencers, fire dampers, balancing dampers & other plant items will be installed as per construction drawings, and will be supported adequately. 4.3 AHU AHU’s will be moved into position using purpose made rollers or skates. Units will be carefully plumbed and aligned by use of blocks and shims. After alignment is completed the supervisor will ensure that vibration isolators are of the correct deflection. Whilst making the final connections to the units the supervisor will ensure that the pipework is adequately supported independently of the unit.

4.4 Fan Coil Units Prepare the necessary hangers and brackets for FCU as per approved details. Hang the FCU into its proper level. Level the FCU ensuring that the condensate will flow thru the condensate drainpipe. Ensure that the level of the FCU is within tolerance as specified prior to the tightening of the lock nuts.

4.5 Fans All necessary assembly operations will be carried out before installation of any fan. Care will be taken to ensure that all fastenings are tightened securely and that any lifting points provisions will be used correctly. Checking of the fan’s free rotation and air flow direction will be verified prior to installation. Support frames for wall or ceiling mounted fans will be securely fixed to building structure, adequate space will be provided for movement of fans during operation. A minimum gap of not less than 50mm is required between fan collar and ductwork before the installation of final flexible connections. Before making final flexible connections, check whether the ductwork is internally insulated or acoustically lined, and ductwork and fan are aligned. Pressure testing of the air duct will be carried out for client’s inspection. On successful completion of testing we will apply insulation to the ductwork. On completion of the pipe work, the chilled water pipe will be flushed and chemically treated such that the chilled water pipe is free from impurities and harmful material. Final connections for air handling units and fan coil units will be installed in accordance with the master

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program.

After the permanent power is available, we will then energize the switchboard. Power supply will then be distributed to all MVAC equipment for testing and commissioning. All electrical rooms, subrooms will be locked on energisation and all routings will be identified as live. On completion of the installation the power supply will be made available and we will commission the system. Preliminary water and air balancing will be carried at the final stage of the program to ensure that the flow rate in individual system meets the design requirement.

5

Electrical System

5.1 Cable Containment System All Electrical services cable containment and accessories (including cable trays, trunking, conduits and “back boxes” for light switches & socket outlets etc.) will be installed at the correct elevations and locations, as indicated on the approved construction drawings, maintaining good engineering practices at all times Electrical services (including Cable trays, trunking, conduits and Luminaries etc.) shall be supported, independently from any other services or fixtures, at intervals as defined in the specification, with approved type brackets. Cable trays will be connected and securely fastened by mushroom head steel bolts. Connections shall be mechanically strong so that no relative movement can occur and shall be efficiently and adequately bonded.

5.2 Cable and Wiring Prior to installation of cables and wiring, electrical services cable containment (including conduit and accessories), will be cleaned of any debris, inspected and tested. Cables and wiring shall be installed as indicated on the Installation Drawings, maintaining good engineering practices throughout. e.g., taking into account the minimum bending radius of the specific cables to be installed and all cut ends of cables, (until immediately prior to termination), will be sealed to prevent ingress of moisture. The setting position of the cable drums shall be determined in consideration of the cable laying direction so that the cable can be reeled out onto the containment without the ca-

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ble being kinked. ties.

Cables will be fastened onto tray by means of purpose made cable

All cables prior to termination will be tested for continuity, correct destination routing – point to point, and insulation resistance. Insulation of cables will be tested; core to core, each core to earth and all cores together to earth. Megger Test shall also be tested.

5.3 Lighting All electrical devices and accessories (including Luminaries, Light Switches and socket outlets etc.) will be installed. Cable lugs for connections of luminaries shall be used when necessary. Final connections and terminations will be made to equipment via appropriate accessories. The lux level will be measured according to the specification during testing and commissioning.

5.4 MCC & LV Panel Installation

Motor Control Centre

Site supervisor to carry out Pre-Installation Inspection of Motor Control Center prior to off-loading and positioning. Check the equipment schedule for correct location and reference for the Motor Control Centre. When the Motor Control Centre has reached its final destination, it will be uncrated, unpacked and removed from its timber base. The M.C.C. is free standing, self supporting assembly, and will be bolted to the floor with anchor bolts ensuring the assembly is horizontal and vertically in alignment as detailed on the Construction drawings. A thorough inspection will be carried out to determine that no foreign matter (tools, etc) have been left in the MCC after field installation is completed. Particular attention will be paid to the Bus bar Compartment, ensuring it is free of debris and moisture. All bus bar and circuit connections are carefully tightened and torqued from the factory, as it is possible for connections to vibrate loose during arduous shipments. All connections are checked for tightness/torque prior to the energisation in accordance with the manufacturers’ recommendation.

L.V. Switchgear and Associated Equipment

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This procedure defines the method that will be used to ensure the correct installation of the equipment listed below:

Main Switchboards Lighting and Power distribution Panel Board Assemblies Emergency Lighting Distribution Panel Board Assemblies

All works relating to the above items will be carried out in accordance with the manufacturers’ recommendations, and in compliance with the contract documents and general specification. Before any item of equipment is installed, a visual inspection will be carried out on that equipment. Where defective equipment is found, it will be returned to the store. After the pre-installation inspection has been carried out, works will commence in the appropriate areas. The installation supervisor will instruct all relevant tradesmen regarding the execution of the works and will distribute all necessary reviewed construction drawings of the latest revision. Prior to sitting and erection / assembly of switchgear equipment, inspection will be carried out to ensure no damage to cubicle or electrical components has been sustained.

Precise setting out and positioning of the electrical switchgear will be adhered to as shown on the construction drawings, and further on-site consideration will be taken into account with respect to maintenance / inspection, termination of conductors. Also consideration will be given to facilitate possible future additions of electrical switchgear. All switchgears and associated items will be installed to manufacturers specification and secured accordingly with correctly sized nuts and bolts or tapped out metal work. Self tapping screws will not be used. Wall / Floor anchors will be used as deemed appropriate for various items of equipment. Locking washers will be used on all screws / bolts.

In cases where conductor / terminal shrouds are to be used, and where terminals have insulating barriers fixed over them, inspection will be carried out to ensure these have been correctly installed. Where status indicator lamps are fitted, these will be inspected for the correct mode of operation and color-coding. Terminal blocks for the live conductors will be covered with an appropriate warning label and separated from other terminal blocks per partitions. Cable segregation will be adhered to throughout the installation. Before energizing any part of the electrical distribution system takes place, functional testing will be completed and the testing results should be acceptable, all terminations

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are checked and secured, all covers and safety shields are in place. All section personnel will be informed and relevant “Supply Present” indication notices are displayed. The Site Supervisor will monitor the activities to ensure that all components indicated on the approved construction drawings have been installed and that the installation complies with the contract requirements and will be verified that the completed installation complies with the specification. When all the commissioning works for individual systems is completed, we will arrange an integrated system functional test for the E & M services to ensure that the whole packages operates as per the design criteria

6

Plumbing and Fire Fighting System

6A

Plumbing and Drainage System

6A.1 Water Pipeline Installation By means of string and chalk lines the actual pipe layout will be identified, to facilitate the installation of pipe supports and anchors. Supports will be fixed in place according to the construction method. Supports will be arranged as near as possible to pipe joints and any change in direction. Heavy in-line equipment will be supported independently. All pipework will be inspected for cleanliness prior to erection and cleaned as appropriate. Open ends will be covered with plastic caps during construction and only removed when the adjoining section is installed. Coordinated service installations will generally run parallel to the alignment of the adjacent building surface's, and as close to the construction as possible, sloping either towards a drain point or vented high point. Drain outlets will be provided at all low points of the system, air vents will be provided at high points where appropriate. Pipework will rest freely on supports and be aligned prior to final connection to each other, or any other pertinent equipment as listed in the scope of works. Special care will be taken before final assembly and closing up to ensure that all pipes are properly cleaned out and free from grit, scale and jointing material. Where possible all pipes of straight runs will be positioned so as to allow for pipes to be rotated for jointing. Pipework connections to pumps will be made by the designated

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flexible connection, where required. All branch connections will be factory fabricated, and if site fabrication is necessary it will be of the same factory fabricated standard. Valves and other in line equipment will be installed where indicated on the construction drawings. Installation will be in accordance with the manufacturers recommendations and will be consistent with the flow direction of fluids. Flexible connection, anchors, expansion joints, will be installed where indicated on construction drawings. Supervisor to ensure that where pipes cross construction expansion joints, the scheduled type of expansion joints are installed. Where pipework passes through a designated fire barrier, it will be provided with an appropriate fire stop to the approved detail as indicated on the construction drawings. 6A.2 Sanitary ware Installation Works areas will be inspected prior to works to ensure conditions are suitable for sanitary ware installation. The sanitary ware will be re-inspected on removal from storage area, and on arrival at workface. Each item will be fixed using the propriety fixings as supplied by the manufacturer and in accordance with the manufacturers installation instructions. Caution will be exercised when fixing to finished surfaces. Final connections of services to sanitary ware will be made using joints/jointing compounds as recommended by the manufacturer. Joints between finished surfaces and sanitary appliances will be pointed using a proprietary sealant to ensure no crevices remain that might harbor dirt. After installation all sanitary ware will be suitably protected against damage and the permit to work system will be maintained until handover and acceptance by the Engineer. Upon the completion of installation of the system or part thereof, the installed pipe shall undergo air pressure testing.

On the completion of testing, we will commence the flushing and disinfections to the pipe work. Testing and commissioning will then proceed. In the meantime, we will arrange inspection by Government for the whole plumbing system for the permanent water supply.

6B

Fire Fighting System

For the pump room at Level B, we plan to commence the installation after the completion of Level B structure. Before the installation commences all builder’s works and plinths, waterproofing work inside pump room areas will be completed.

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For the installation of Fire Pumps, the inertia bases will be checked to confirm correct positioning and installation. The fire services pumps will be fixed onto the inertia bases and base elbows fitted as required. Pump alignment will be checked. Pipework vibration isolators will be fitted on the suction and discharge side of each pump. Each pump will be fitted with an isolating valve and strainer on the suction side of the pump, and an isolating valve and non-return check valve on the discharge side. The pipework assembly shall be separately supported and anchored such that no load is imposed on the pump assembly. Each pump will be securely fixed to the slab prior to any pipework connections. Pipework from the safety valve will be run to low level so as to ensure a safe discharge at floor level. For the installation of the sprinkler, fire hydrant and hose reel, we will commence the pipe work installation for these system on the completion of the structure. Pressure testing of individual systems will be on a zone by zone basis (sprinkler pipe in floor by floor basis, fire hydrant and hose reel in vertical riser zoning). Upon completion of the system, and after all pressure tests have been carried out, the system will be commissioned in accordance with method statement to meet the client’s requirement. All the FS system must be completed prior to the Government Inspection and require testing to confirm its operational functionality.

7

Low Voltage Systems

7A Building Automation System Prior to the commencement of any construction works, areas and safety access will be inspected to confirm that they are in a suitable condition for construction works to commence. Since the Building Automation system is for the control and monitoring of other MEP systems, coordination with other systems e.g. HVAC, electrical, fire etc. is very important. Before the commencement of the work, location of sensors and interfacing points/panels must be coordinated with other parties and layout drawings are ready for installation. The Site Engineer/Supervisor will also check that Tools and equipment are in compliance with the contract requirements. The installation of field equipment will follow the manufacture’s recommendation and after installation and final termination, the sensors will be tested individually before the final system test. For details of BAS system, please refer to the Appendix 5 – Siemens proposal.

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7B

Fire Detection and Suppression Systems

7B.1 Fire Detection System Prior to the commencement of installation, the locations of all items of equipment and the routings to be followed for the cable containment system will be identified on Installation Layout Drawings. The installation of AFA equipment in respective room requires careful consideration regarding their relative positioning. To limit the coupling of transit EM field from noisy equipment, equipment should be installed as far as possible from switched loads such as relays, contactors, lifts, chillers and variable speed motor drives. Device cabling, will be installed in metal trunking/conduit which will provide screening effects of incident radiated fields and transients coupling. All wiring systems shall be properly installed in conduit and in compliance with local codes. After the installation of cables, detection devices, alarm, control modules, fire control panels will be installed. Detection, actuation, alarm, and control systems shall be installed, tested and maintained in accordance with the requirement of specification. For details of posal.

Fire Detection system, please refer to the Appendix 5 – Siemens pro-

7B.2 Fire Suppression System – FM200 system FM200 systems will be provided to protect the rooms which are considered as main server rooms and selective areas housing expensive electronic equipment both at PTB and ATC. Installation The installation of FM-200 system equipment requires the completion of four categories and their related steps:

Equipment inspection Container Mounting Piping and nozzle installation Electrical installation

Equipment Inspection The agent container and other components should be inspected for shipping damage and to verify receipt of parts. The FM-200 cylinder is pressurized and must be handled carefully. Weigh cylinder and compare weight with the cylinder weight information to make sure that no FM-200 has been lost.

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Cylinder Mounting When it has been determined that weight and pressure are within acceptable limits, install the cylinder in position on the rail, add strap and secure loosely with the spring nuts and spacers provided. At this stage, the strap should not be drawn up tight against the cylinder. Some cylinder movement should be permitted while aligning the cylinder valve discharge outlet with the discharge tube. Piping and nozzle installation The next step involves the discharge tube. The piping between the storage cylinders and the nozzles shown on the drawing should be the shortest route allowable with a minimum of elbows and fittings. Correct alignment is essential for proper mating and an ultimately tight seal. All piping must be securely anchored to rigid support by means of brackets. After the discharge tube has been installed and secured, tighten the stud nuts to firmly secure the cylinder strap. This will snug the cylinder into position. The discharge nozzle is the ultimate device which delivers the extinguishing agent to the hazard area. The nozzle to be mounted as described and shown on the drawing should allow for unobstructed flow of the discharge stream. The first step in making the system operational is the connection of the Manual Release Unit to the cylinder valve. Once it has been determined that the unit is in the non-operated condition (probe retracted), it can be attached to the connection on the cylinder valve. The next step in making the system operable is to properly wire the solenoid pilot valve assembly.

Electrical Installation FM200 panel will be mounted inside the cylinder room. All wiring systems shall be properly installed in conduit and in compliance with local codes. Detection, actuation, alarm, and control systems shall be installed, tested and maintained in accordance with manufacture and specification.

8A

Elevators

A total of 29 nos. of elevators will be installed for the Passenger Terminal Building (PTB) and ATC Tower Complex, of which 26 nos. are for PTB and 3 nos. for ATC. 8A.1 Hoisting of Major Equipment The hoisting of major equipment shall be carried out with the use of tested and certified loading apparatus. Method statement, apparatus configuration shall be submitted for comments/approval prior to the event.

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Apparatus shall be strategically placed on the main structure in suitable locations to gain access to the landing levels. Specified floor loading at location of our delivered equipment will be strictly adhered to at all times.

8A.2 Receipt of Lift shaft The project engineer with the site foreman shall do an initial inspection on the advised handover date, any rectification works required (if any) shall be pointed out immediately for builder’s rectification works.

8A.3 Plumbing of lift shaft Plumbing templates shall be manufactured on the site to suit condition in accordance with the approved shop drawings. The templates shall be installed at the top and bottom most position of each shaft, plumb lines shall then be supported and weighted to the templates.

8A.4 Distribution / Location of Major Equipment Prior to installation The lift machine or control panel shall hoisted to the top landing level, the detail of this distribution shall be submitted separately and in advance of delivery for final approval or site coordination. While the car, counterweight guide rails and car frame shall be located at the ground floor as near as practical to the relevant lift shaft. The rest such as entrances, sills and architraves etc. shall be distributed to each landing through the lift shaft. 8A.5 Shaft Component Installation With the shaft completely plumbed and rectified (if necessary), installation of car and counter weight guide rail fixing brackets shall be mounted and located at the dimension shown on the approved shop drawings. Lift pit equipment, buffers and bottom tension wheel for the over-speed governor shall be located and properly fixed by using the approved fixing systems specified on the sample submission board or schedule. 8A.6 Guide Rail Installation After installation of rail brackets, the car and counterweight guide rails shall be install by the following process.

The winch will be erected at the ground floor lobby area with hoisting rope install

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inside lift shaft, the winch arrangement will be certified before commencement of any hoisting activities.

Individual guide rail shall be hoist by the winch through the ground floor entrance.

Fitters shall be working within lift shaft at the top most end of the previously hoisted guide. The fitters are to instruct the winch operator for positioning the next guide rail and to secure the guide rail in place.

The car and counterweight guide rails shall be aligned to the plumb lines

8A.7 Landing Entrance Installation Landing entrance shall be installed at the locations specified on the approved shop drawings, the dimension for the location of the landing sill and top track shall be made with reference to the plumb line and reference line provided by the builder. The landing doors shall then be installed and aligned against the reference line after the installation of architrave.

8A.8 Hoisting Machinery and Control Panel Installation Hoisting machine shall be installed by using lifting hooks and or trolley beams, the location and loading of such hooks or beams shall be shown in our shop drawings. Final location of machinery is a direct relationship to the plumb shaft and shall be aligned according to the approved shop drawings. Control panels shall be located as per approved shop drawings, or at any location according to the site condition at the time of installation. As fitted drawing will be amend in according to the latest location of the control panel and relevant equipment. 8A.9 Shaft Trunking / Components Shaft trunking, lighting, conduits, fixing anchor and cable etc. shall be of approved type as indicated on the sample board or schedule. All connection and trunking and or conduit configuration shall be accordance with local code of practice. 8A.10 Car Sling and Car Cage Assembly Car sling will be installed above the lowest level served, the bottom beam will be fixed to the guide rail using approved rail clamps. The side and top beams shall then be installed and fixed. The car platform shall install onto the bottom beams and fixed with reference to the

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landing sill plumb lines. Finally, the car cage shall then be built and fixed to the position provided on the car platform and car roof steady devices.

8A.11 Slow Speed Test Slow speed commissioning shall be performed after the installation completed. All testing tools used for this process shall have current calibration certificate to ensure accuracy of the tests. The slow speed test or commissioning shall be conducted in strict according to guideline to ensure the quality is up to the client requirement. 8A.12 Installation of Lift Car Power Door Operator Car door operator shall be installed onto the car cage and aligned to the car platform. The car door shall be hanged on the individual door hanger by door rollers. The car door safety equipment shall then be installed onto the leading edge of the car door. These devices will be commissioned prior to the fast speed tests. All landing signalization shall be connected and installed at the locations specified on the approved shop drawings. 8A.13 High Speed Test Prior to high speed test, a list of specified test tools together with the current calibration certificate number will be provided. Actual high speed test of the controller and drive panels shall be conducted in accordance with the guidelines set down by lift contractor. The inspection and checking of all related electrical mechanical, electrical devices, safety control and passenger features shall be done in accordance with the specification requirement.

8A.14 Load Test Load test shall comply with the government requirement. The load test shall be conducted at the time specified on the installation program for each lift.

8B

Escalators

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A total of 22 nos. of escalator will be installed for the Passenger Terminal Building PTB. 8B.1 Unloading and Moving Escalator The delivery route for delivery and moving of escalator will be well in advance before the equipment arrival for approval. The escalator will be delivery in one piece or in several pieces depend on the length of the escalator. Once the escalator is arrived by delivery truck, the escalator will be unloaded using mobile crane. After unloading the escalator will then be moved to desire location by winch and dollies in one piece or in two or more pieces . If the escalator must be transported on upper floors, it must be sure that these floors can support the load. Additional support shall be use such as wooden planks, steel support etc. serving as transport ways for the escalator, a better load distribution can be reached, and the point loading on the floors is reduced. 8B.2 Receipt of Escalator Shaft The Project Engineer with the site foreman shall do an initial inspection on the advised handover date, any rectification works required (if any) shall be pointed out immediately for builder’s rectification works. The building dimension will be checked and inform builder for rectification if any. 8B.3 Installation of Escalator After building dimension is checked or rectified and the escalator is moved into position for hoisting in the well way, A-frames will be erected at the upper and lower pit of escalator. The upper end of the escalator will be hoist and position on to the support, then similarly for the lower end. If hoisting hook or beam on the floor slab or floor beam is provided, the use of A-frame will not be necessary and the installation method would be by lifting the escalator from the hosting hook at soffit. 8B.4 Builder’s Works The builder must ensure sufficient opening for escalator to access into the building, the size of the opening shall be submit in advance for planning and approval. The access shall be open at position that the escalator can be hoist or drag to it final position.

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Once the escalator is in positioned and properly aligned, the builder will informed to arrange for sealant and finishing works etc. 8B.5 Start up Test Before performing start up test, the step chain tension, step to step clearance, step to skirt clearance, comb segment to step clearance, external safety devices emergency stop switch and power supply connection etc. will be checked. The truss and step band shall be checked and clear of obstruction if any. The escalator will then be started in the down direction and the stop switch will be press to measure the stopping distance, the stop brake shoes will be adjust where necessary to achieve desired stopping distance. All other safety devices will be checked such as skirt brushes, broken step switch, skirt switch and broken step chain switch etc. 8B.6 Setting and Measurements The following settings and measurements shall be done as follows to ensure the quality of operation

Set pretension of spring on return shaft to specified length. Check handrail pretension Check handrail drive rollers, if necessary adjust it to recommended level. Check step inlet and outlet, if necessary adjust it to recommended level. Step sag device. Check gaps between steps and balustrade skirting Check gaps at step inlet guides, if necessary adjust the gap dimension. Check handrails for easy movement is escalator truss, if necessary adjust it. Check service brake and baking distance and adjust when necessary. Check setting of chain guide shoes and adjust if necessary. Check the safety of power supply cable. Check level of gear oil Measure the current consumption of driving motor in both running directions, for each phase and compare with the rated current. Installation measurements against escalator truss or earthed conductor according to applicable regulation.

8B.7 Other Tests All tests shall comply with government requirement. All tests shall be conducted at the time specified on the installation program for each escalator. The test shall be conducted in accordance with statutory requirements.

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9

IT Systems

General requirement Prior to the installation, these requirement should be inspected and verified :

Local equipment, central control equipment and their associated equipment to be installed are available.

Installation and mounting details drawing should be available.

Power supply should be available for electrical tools use.

Preparation

Pre-inspection survey of the area shall be conducted. Mounting details drawings shall be prepared Equipment required – all equipment including accessories and other central control equipment.

Off-site preparation Before installation work of any equipment shall be started, the procurement status, inspection status, transportation requirement and the temporary storage shall be carefully planned and implemented. The readiness of the mentioned preparation are of vital importance to ensure a smooth installation. To ensure the site readiness, we will focus on the inspection including but not be limited to the following pre-requisite : Site availability such as power, lightning protection, access path verification for installation materials and equipment delivery. Tools General hand tools, cable ties, power tool, ladder and test monitor. Installation

The equipment and their accessories will be installed on the mount. Flexible conduit with the connection wires will be connected . Termination of cable. Power up the equipment set and perform local test. Entering and Editing associated program and address etc .

Site clearance

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Once each work location is completed, the temporary associated equipment will then transport to another location immediately. After the installation is completed, the workers shall tidy-up the work area. For details of each separated IT system, please refer to the Siemens technical proposal as attached in Appendix 5.

10

Baggage Handling System

This method statement details the planning for the installation and preparation work required at the PTB Area. The document also defines the minimum safety precautions and the erection sequence required for the works. The conveyors, conveyor tier supports and support structures will be assembled and erected on site area. Project Engineers will be situated on site full-time to supervise the installation work. All appropriate tools, plant and equipment will be arranged for installation work.

10.1 Preparation Work

A temporary site storage and sub-assembly area will be arranged in the PTB close the erection area, the location to be agreed.

Confirm the reference and datum lines

The appropriate equipment, plant, materials, ladders, working platforms and tools required for erection will be delivered to site and carefully checked against the inventory lists.

10.2 Erection of Conveyors, Conveyor Supports and Racks

Mark the anchor bolt hole locations as per the approved drawing

Install the support columns and brackets

Adjust the support columns and brackets to correct alignment and level using shim plates and anchor bolts

Install the structure, access platform and handrails using a forklift truck and scaffolding

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Check the alignment and elevation of the structural platform. aligned, secure and fix platform in permanent position

When correctly

Transfer the conveyor sections from site storage compound to temporary storage area daily to meet the installation progress

Lift and install the conveyors and the tier support to the structural platform using a forklift truck and scaffolding

Check the alignment, elevation and level of conveyor. structural platform

Tighten-up all bolts and flange clamps. Check the final alignment and elevation of Conveyors

Touch-up any scratched and/or damaged equipment and area

Clear away any temporary works and debris in the PTB erection area on a daily basis

When correct, secure to the

11A Passenger Boarding Bridges 10 nos. of Airport.

Passenger Boarding Bridges will be installed at Hyderabad International

11A.1 Material and tools required

one lift truck with lateral shift fingers and crane lifting tool for the rotunda installation tools for the elevation system rocking tool for the elevation system measuring tools, gagged

11A.2 Assembly operations Before the erection works, the following will be checked check that anchor bolts foundation is properly done check that the service wires are available check that all the material & tools required for the assembly are available. The assembly operations could be divided chronologically as follows : Removal and unload of the materials Checking and cleaning of the civil works Installation of the landing to the tunnel

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Installation of the column Installation of the rotunda Installation of the tunnel Installation of the elevation system Installation of the driving unit Installation of the service stairs Installation of mechanical elements Installation of the cables and electrical cupboard. Electrical wiring of the components Flashing between rotunda and terminal/tunnel fix Final touching-up Commissioning and tests

11A.2.1 Removal and unload of the materials Before the unload, it is necessary to check the area available in the platform for the best location of the elements that are not going to be set immediately, the cranes and trucks in order to make easier the assembly works with the maximum efficiency and safety. Once the elements are unloaded, they will be compared with the packing list and will be checked visually in order to see if there is any kind of damage. 11A.2.2 Checking and cleaning of the civil works The following elements of the civil works will be checked : Finished shoe with parallel bolts, bolt screw in perfect condition Platform with no obstacles in radium>twice length of the retracted PBB Check that the earth connection has been installed in the shoe 11A.2.3 Installation of the landing to the tunnel Before carrying out any operation with the components it is necessary to set the landing to the tunnel by means of a lift truck. 11A.2.4 Installation of the column Check the position of the column according to the layout. Erect the column with two slings anchored in the upper yoke and focus the low yoke to the bolts so that the column is set as indicated in the assembly drawings. The low yoke is then on the special washers previously leveled. Place the special upper washers and its nuts near to each other but without tighten them. Level the column with a spirit level place on its upper washer. 11A.2.5 Installation of the rotunda Check that the surface between the two junction washers of the column and rotunda are

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clean and that there are no obstacles that could hinder a perfect adjustment. Unpack the rotunda. Erect the rotunda with slings by the hoist points by means of the tool for transport of the rotunda. Rise the rotunda to the necessary height for manipulating its low part. Remove the crossbeam for low support and the wood stoppers used for the transport. Remove the lock screws from the washer of the rotunda. Erect the rotunda up to the holes of the upper washer for the column with the holes of the washer of the rotunda. Place all the screws, tighten them according to a cross shape, first with the electrical screwdriver and then with the dynamometric key set. Check that the floor of the rotunda is at the level of the terminal/fixed tunnel. Check with the spirit level the right leveling of the rotunda’s floor and, especially, the level of the shaft that joins the bracket support of the PBB. Tighten the upper nuts of the column anchor bolts according to a cross shape by means of a shot spanner and a mallet. 11A.2.6 Installation of the tunnel Unpack the tunnel. Place the slings in the tunnel; if necessary, one of the slings can be shortened or a hatter can be used to level the tunnel. Erect the tunnel horizontally and bring the face of the tunnel to the hole of the rotunda. Prevent from any rocking and sudden manoeuvres. Introduce the tunnel into the face of the rotunda, line-up the shafts of the tunnel and rotunda hoist points and then introduce the pins together with their corresponding sheathing and locking according to the drawings. 11A.2.7 Installation of the elevation system Once the elevation system is placed on the platform, the crane will make the PBB rotate so that the elevation columns are parallel to the tunnel and the upper part of the columns are as near as possible to the anchor brackets of the tunnel. The columns will be slung with two fibre slings joined to the crane’s hook by a rocker. Erect carefully the columns with no friction with the tunnel. Tighten the both upper and lower screws. 11A.2.8 Installation of the driving unit Extend the tunnels so that the low flange of the elevation system is inclined. The crane will lower the tunnel carefully until the tunnel is on the driving unit. Place and tighten in a cross shape the screws once aligned. Extend the PBB as much as possible to facilitate the rest of the works and remove the slings from the tunnel. 11A.2.9 Installation of the mechanical elements

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Assemble the elements and running dismantled for the transport of the PBB. stance : Release blocking plugs for rotating cabin Place rotating cabin motor Place outside cover guide tubes Place bracket for the guide cables or wiring scissors Place autoleveller motor Place autoleveller Place ramps

For in-

11A.2.10 Electrical wiring of the components Place the electrical cupboards in the column according to the drawing. Set the cables and wiring of the components according to the electrical scheme of the works 11A.2.11 Flashing between rotunda and terminal/tunnel fix Place the lining plates that make the junction between the tunnel and the rotunda as well as the junction ramp. Be extremely careful to avoid any scratch of the visible elements.[ 11A.2.12 Final touching-up After the works, the PBB will be examined, especially, the parts that suffered the most during the erection. The damaged areas will be repaired. Grease the rolling bands of the telescoped rolls as well as check the perfect condition of greasing of the rest of the elements. After the above works are completed, the PBB will be tested for the perfect functioning of all its parts. 11B Visual Docking Guidance System Installation of the Docking Guidance System is performed in three phases by three different personnel categories.

Mechanical installation Electrical installation Safedock software set-up

11B.1 Installation schedule The following are the installation schedule for the VDGS Attach the support fixture to the wall or mast Mount the Docking Guidance Unit on the support fixture Install the operators panel Mount the calibration plate

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Install interconnecting cables Connect a PC, with the Safedock configuration utility program and perform the following : • Calibrate the DGS system and define a center-line • Set operating parameters • Configure the stand Carry out a functional check of the system

11B.2 Mechanical Installation When installed, the Docking Guidance unit is usually mounted from 5.5 to 7 metres above ground level. The actual mounting height depends on local conditions and the type of aircraft, which will be docked to the terminal gate, e.g. wide-bodied or narrow-bodied aircraft. The Docking Guidance Unit, where possible, should be mounted such as it is centred over the aircraft stand centerline. 11B.2.1 Docking Guidance Unit

Assemble the sunshade and attach it to the Docking guidance unit Attach the mounting rails to the back of the docking guidance unit Attach appropriate lifting straps to the docking guidance unit at suitable positions so that the sunshade is not damaged when the unit is lifted Lift the Docking guidance unit into position using a crane Fasten the unit to the support fixture with the clamps

11B.2.2 Operator Panel The operator panel is enclosed in a standard aluminium box, which can be installed using standard mounting equipment and fasteners to mount it on flat surfaces or posts. 11B.2.3 Calibration Plate For calibration check purposes, the docking guidance system requires two fixed edges as references, one horizontal and one vertical edge. If none of the fixed equipment at the aircraft stand can be used to obtain these edges, a calibration plate needs to be installed. The calibration plate must also be mounted at least 3 meters from the docking guidance unit, and there should not be any objects behind it for at least two meters. 11B.3 Electrical Installation 11B.3.1 DGS Connection to Mains The mains supply should be routed from its conduit entry point via the routing channel to the pole circuit breaker. Cables should be connected to the DGS unit according to drawing. The protect earth, PE, wire shall be connected to chassis directly, as it enters the cabinet, to the yellow/green terminal.

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Cables for powering and operating the Docking guidance system must be run between the various sub-units of the system. 11B.3.2 Connections of the Operator Panel The following signals, associated with the operator panel, are to be connected to the Docking guidance main unit :

20VDC power Operator panel COM line to main DGS unit Emergency stop line Maintenance COM line to main unit

For the connection of the operator panel a shielded twisted-pair cable shall be used, thus with 2 spare pairs. The cable area is needed especially for the power supply. The cable should have a braided shield for obtaining optimal noise immunity. The cable from the operator panel shall be connected to terminals in the DGS main unit according to the drawings. 11B.4 Safedock Set-up Instructions After the Docking guidance unit, operators panel and calibration plate have been installed, the system must be set-up to meet the demands or characteristics of the particular stand. The set-up procedure includes : defining the center line, setting sighting and calibration points, removing interference echoes, loading operation parameters and setting-up the operator panel for selectable aircraft types. The set-up procedure at each stand is carried out using the Safedock configuration utility program. The configuration print-out utility program is used to document each stand set-up. A copy per installed stand shall be stored for the customer’s approval during commissioning. 11B.4.1 Set-up Phases The Docking Guidance System is set up by the following procedures :

Defining a centerline Verifying a centerline definition Setting calibration check points Configuration (setting aircraft types and their stop positions, etc.) Removing echoes from fixed object Storing stand configuration files

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11B.4.2 Functional Check Testing the Docking Guidance System, after the installation has been completed, is done using the ‘walk test’ procedure. 12

Security Systems

12A Baggage and Passenger Screening The following is an overview of the security system delivery, uncrating and installation methodology. Delivery of equipment

The equipment will be delivered by truck to an allocated area close by to a loading area. The crates will be unloaded in the allocated area by means of fork lift. The machine will be uncrated and remove all packaging. When uncrating is complete, the machine will be wheeled, by means of skid rollers and the fork lift, to a position adjacent to final location. The machines will be left ready for installation. Then the machines will be barricaded off, and warning signs posted.

Installation

Detailed surveying of all installation location will be carried out prior to commencement of the installation. The machine will be hoisted to final position and the machine will be level. The machine will be fixed to the final position and power supply cabling will be connected to the machine. Initial test will be carried out to enable the checking of the machine interface with other system.

All necessary testing will be carried out to ensure that the equipment is ready for screening.

12B Access Control Systems

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Please refer to Appendix 5: Siemen’s Proposals for a comprehensive review of this topic.

9.6

Furniture The furniture specified in this Contract includes the following categories : Fixed furniture Check-in counters, Immigration counters Air ticket and services counters Security check points Gate counters Airside service counters Landside service counters Custom service counters Furniture in public areas – airport seating Furniture will be manufactured off site to the design drawings and subsequent shop drawings reviewed by the site-based Architect. Furniture shop drawings will be prepared according to the design intent drawings. Coordination with IT systems and security systems subcontractors will be arranged to define the spatial requirements for each system installation. Subcontractors will be issued copies of the furniture shop drawings relevant to their installations. Subcontractors shall mark their requirements on shop drawings and returned for review by the site based Architect. Shop drawings shall be updated after the review. Coordinated drawings, after review with no comment, will be used for manufacturing purpose. The exact location of the furniture will be marked out on site where the furniture will be installed. Furniture will be delivered to site only when the location is ready, the area declared as a “clean area” and all other items are finished and ready for the installation to be carried out. The timing of the installation will be coordinated with MEP subcontractors and all the relevant parties involved.

9.7

Signage The signage system specified in the tender document includes the following categories : Airport information signs, including traffic signs, service signs and regulatory signs, Evacuation signs, exit signs, including signage in the electrical system, Corporate imaging for airline companies and static signage for other services under direction of the airline companies, Commercial signage for shops, bars and restaurants and signs to identify and locate commercial services such as banks, shops, bars and restaurants, etc.

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Commercial advertising signage, Signage in non-public areas.

The installation of the signage will be based on the details in the design drawings and subsequent shop drawings after review by the site-based Architect. Location of the signage will be set out at the exact spot of their installation. Signage will only be installed at the later stages of the Contract for the statutory inspections or after all other work trades in the related areas have already completed their work. END

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Methods Statement-Rev A1

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