Bombardier Transportation needed a 1-km test tunnel to test its new Azur railcars. The mandate required to reconstruct a subway line identical in all respects to that of the Montreal metro.
Technical specifications of the project
Dome dimensions : 60′ wide x 315′ de long
Arch spacing : 7′
Foundation : concrete grade beam
- 60′ section insulated with side flaps and the entire dome has several airlock to counter the thrust of the train running.
A firewall was installed inside the tunnel to control the wind pressure inside the dome when moving subway cars.
- The construction was to be divided into two sections. The first was to serve as a workspace for technicians and was isolated to maintain an ambient temperature of 20oC. while the second was tempered at 5oC.