Project led by Michael Meschino while employed at a previous firm.
IBI Group Architects
Advance Rail Group Dragados JV
13 stations; each 176 m long x 29 m wide x 22 m deep
Structural Consultant (pre-bid engineering)
$2 B (Red Line North); $2.5 B (Green Line)
When complete in 2026, the Doha Metro will comprise four rapid transit lines – Red, Green, Blue, and Gold – covering the Greater Doha area. In central Doha, the Metro will be underground, while the remainder will be at ground level or elevated.
Pre-bid engineering work was completed for the underground stations and cross-over structures along the Red Line North and the Green Line. The Red Line stretches 13 km in length, with two twin-bore tunnel sections serving 7 stations; the Green Line is 15km long, serving 6 stations. Each station will have a concourse level for public circulation and fare collection, a platform level for access to subway trains, and a third level beneath the platform for mechanical and electrical services. Other features include tunnels connected to the three entrances and shaft structures to grade.
Challenge: The groundwater in Doha contains high amounts of sulphates and chlorides, which is extremely corrosive to concrete and steel. Additionally, the groundwater level is quite high, and can rise significantly in a short time span. This results in significant uplift forces on below grade structures.
Solution: To address the corrosive groundwater conditions, the structural design limited the crack width to 0.15 mm to ensure watertightness. In addition, a highly durable water-proof membrane with leak repair provisions was specified. Added safety against buoyancy was provided by extending the invert slabs beyond the exterior walls to engage the additional weight of the surrounding soil.