Tehran Eastern Sewer Tunnel and Related Shafts in EPC Contract (Lot III)

Brief

This main tunnel is specifically for collecting the sewage of eastern area of Tehran, The sewage of this area is collected by 22 shafts and transmitted to wastewater treatment plant located in south of Tehran.
This reinforced concrete tunnel executed at 20 m underground and the
interior surface of tunnel is covered with HDPE sheets to protect the tunnel from corrosion and increase its durablity.
The technology of covering the interior surface of tunnel with HDPE sheets was used in Iran for first time.

Details

Total work based on primary contract

78,500

Earthwork

5,400,000 Kg

Steelwork

24,000

Cast in place concrete

67,000

Formwork

69,000 m³ (15cm)

Shotcrete

65,000

HDPE sheet

Facts

Type of structureReinforced Concrete Tunnel
Length 8,400 m
Dimensions W: 2,500 mm   H: 3,200 mm
Type of structureReinforced Concrete Canal
Number20
DimensionsW: 2,400 mm   H: 20 m
Location South of Tehran
Start date2004
Duration24 Months
Client Ministry of Energy – Tehran Sewerage Co.
Consultant Lar Consulting Engineers