TURKEY - ISTANBUL METRO, PHASE I

Tekfen Job No:

178

Location:

Istanbul, Turkey

Client:

Istanbul Greater Metropolitan Municipality

Contractor:

Tekfen Construction and Installation Co., Inc.

Tekfen Portion:

100%

Commencement:

21/08/1992

Completion:

31/01/2000

The project comprises of the construction of 2 x 3,5 km long metro tunnels parallel to each other and 3 station buildings on route between Şişli and 4. Levent regions of İstanbul. The tunnels, built 30 m below ground level, are 6,3 m high and 6,2 m wide.

3.200 m section of the metro tunnels are constructed using New Austrian Method while Cut and Cover Method with reinforced concrete box cross-section is applied for the remaining 200 m section.

Two of the constructed stations are 235 m long, 24 m wide and 28 m deep; each station comprises of 3 levels whereas 4. Levent is constructed as a tunnel type station.


FACTS

Anchor: 230.000 m (60 t pull)
Tunnel Excavation: 356.372 m3
Station Excavation: 523.645 m3
Reinforced Concrete: 228.767 m3
Shotcrete: 202.000 m2
Reinforcing Steel: 15.000 t
Steel Mesh: 1.829 t
Steel Rip: 1.781 t
Tunnel Concrete Mould: 8.054 m
Shutter for the Stations (F1 & F2): 89.581 m2 and 149.679 m2
Forepoling: 44.680 m
Rock Anchor Bolt: 50.615 m
Self Drilling Injection Bolt: 1.236 m
Swelex: 3.353 m