DEVELOPMENT OF MUSCAT INTERNATIONAL AIRPORT MAIN CONTRACT 3

CLIENT

Ministry of Transport and Communications Public Authority for Civil Aviation

ENGINEER / PM CONSULTANT

COWI-LARSEN JV (former), Hill International / Aéroports de Paris Ingénierie (ADPI)

SECTOR

Building Works

LOCATION

Muskat, Oman

SCOPE OF WORK

Turn-key Design & Engineering, Procurement, Construction

PROJECT DURATION

February 2011 – December 2016

Project Description

On February 23, 2011, ENKA-Bechtel-Bahwan Engineering Company LLC (BEB) unincorporated consortium, was awarded the Main Contract 3 for the development of the Main Terminal Buildings of the Muscat International Airport. The design of the project was developed on the basis of the design prepared by the COWI-Larsen Joint Venture. The contract was a Design and Build, Lump Sum Fixed Price contract, except where any item or work, described as provisional or prime cost, was subject to adjustments in accordance with the provisions of the contract.

BEB was fully responsible for the development and completion of design, procurement, manufacture, supervision, delivery to site, construction, erection, inspection, testing, trial operation, commissioning and maintenance of equipment and remediation of defects for the facilities in accordance with the employer’s requirements. The buildings and structures in the contract included:

Passenger Terminal Building: enclosed area 247,633 m²

North, South and West Piers: approximately 111,633 m²

Traffic Concourse: approximately 71,094 m²

North and South Multi-storey Car Park: approximately 116,318 m²

North and South Multistory Forecourt Buildings and Lift Building: approximately 35,615 m²

Forecourt Plaza: approximately 37,144 m²

Taxi Drivers Facility Building: approximately 800 m²

Other Buildings (Provisional Sum):

Guardhouse VIP (approx. 50 m²)
Oman Airports Management Company Airside (approximately 12,500 m²)
Ground Handler Workshop (approximately 8,000 m²)
Staff Amenities Building (Maintenance Yard) (approximately 1,154 m²)
Maintenance Yard Gate Building (approximately 2,300 m²)
Waste Management Building (approximately 500 m²)
Fuel into Plane Operators Building (approximately 2,796 m²)
Fit out for the Four Star Airside Hotel (90 bedrooms)

Access ramps:

Five post tensioned viaducts, at a total length of 800 m and max. span 51 m (approximately 12,380 m²)

Bridges (approximately 1,740 m²)

Surface Car Parking and Associated Roads: Shaded car parking for 2,000 cars; open car parking for 2,000 cars

Roads and Car Park Areas:

Asphalt paved, approximately 271,008 m²
Hard landscaped, approximately 65,988 m²
Soft landscaped approximately 74,662 m²

Hard landscape around Buildings: approximately 18,602 m²

The gross closed building area is around 647,480 m²with capacity for 12 million passengers per annum (mppa) extendable to 24 mppa and 36 mppa.

In addition to the main quantities specified below, the extent of the work also included special equipment installations, such as a Conveying System, Visual Docking System, Media Mesh, Signage and way finding systems. Integrated artwork, such as balustrades, glazed escalator sides, glass screens, water features, stone carvings and patterns.

The work of the consortium also included the installation of MEP systems, such as Rain Water System, Plumbing System (domestic water & sewage systems), Fire Fighting System, Cooling Systems (pipes, valves, supports etc.) – Refrigeration, Ventilation / Air Conditioning & Ductwork, Building Management System (BMS), Water Feature & Pools, SCADA (Supervisory Control & Data Acquisition System), Power Distribution, UPS, Internal, External, Arch, Façade and Emergency Lighting, Lighting Control System, Small Power Installations, Fire Alarm, Public Address System, Car Park & Traffic Management System, Info Display System (containment only), Access Control System (containment only), CCTV System (containment only), IT Structured Cabling System (containment only).

Unique Challenges

The steel structure of the Passenger Terminal Building consists of extremely heavy 3D curved trusses. The first challenge was production, as the manufacturing of such irregular components had its own challenges; however, Cimtas successfully completed production. Transportation also presented challenges, due to size limitations and the components being produced at the Cimtas factory in one piece, shipped to site in pieces and welded back together on site, as a pre-assembled truss ready for lifting into place. As the weight of the trusses was substantial, two crawler cranes of 1,600 tons capacity were used. The erection was safely completed, notwithstanding the challenges of an active runway next to the site, together with interface challenges.

Significant Features and Accomplishments

The Development of Muscat International Airport project is the largest ever to be undertaken in the history of Oman
Once completed, the New Muscat airport is to be the new gateway to the Sultanate of Oman
State of art Passenger Terminal Building
14 Million person-hours without LTI

Key Quantities

Concrete Works	530,000 m³
Rebar Works	80,000 tons
Earthworks	4,000,000 m³
Structural Steel	31,000 tons
Façade	135,000 m²
Roofing	175,000 m²
Block Works	225,000 m²
Screed	378,000 m²

Asphalt Works	405,000 m²
Floor Covering Works	600,000 m²
Wall Covering Works	600,000 m²
Suspended ceiling	300,000 m²
Doors including metal, wood, glazed, sliding and roller shutters	7,100 ea
Customized counter and desk furnitures	723 ea
Fixed glass partitions	33,000 m²
Toughened bonded glass	33,000 m²