136056 ⎘
Lining tunnels, galleries or other underground cavities, e.g. large underground chambers; Linings therefor; Making such linings , e.g. by assembling; Lining predominantly with metal; Arch members ; Network made of arch members ; Ring elements; Polygon elements; Polygon elements inside arches Clamps or other yieldable means for interconnecting adjacent arch members either rigidly, or allowing arch member parts to slide when subjected to excessive pressure
Telescopic device and telescopic annular tunnel steel arch
#2Adjustable lattice girder
#3Reinforcement system for the concrete lining of the inner shell of a tunnel construction
#4Yieldable cambered arch support assembly
#5Clip and method for joining steel ribs used as tunnel liner supports