Bachy Soletanche Singapore scope of work for contract T228 involves the construction of an underground station, an underground Pedestrian subway, one Tunnel Boring Machine (TBM) launch shaft structure, one combined escape shaft, and a TBM retrieval shaft, twin bored tunnels, and associated utility and traffic diversions.
Diaphragm Wall: 900m, 0.8-1.2m thick, average depth 36m to 60m. Excavation:34,610m3, concrete: 34,295m3
Sheet Piles: Hat Pile system adopted as removable ERSS. 365m; average depth 21m
Bored Piles: 310nos, 1.5m-2.5mdia, depth 49m; max 80m, Excavation :62,232m3,concrete: 41,250m
Soil Improvement: 7m, 15m & 18m thick treatment, DSM Treatment Volume: 132,568m3