Metro tunnel between MS20 and MS21, Sofia, Bulgaria
Metro tunnel between MS20 and MS21, Sofia, Bulgaria
Sheet retaining walls, type Larssen 606 N and 607 N, H=12 m;
Length = 1662 m., Profile = 38 m2
Metro tunnel between MS20 and MS21, Sofia, Bulgaria
Sheet retaining walls, type Larssen 606 N and 607 N, H=12 m;
Length = 1662 m., Profile = 38 m2