Notes form Abroad

Insulating Pipes from Vibration and Deformation
Pipes (gas, water and others) carried by bridges, sheathed tunnels or other metal structures commonly rest on stands or are suspended by means of stirrups. In neither case is there adequate insulation from the carrying structure, consequently the pipes are subjected to the influence of vibration, and, still more serious, to be disjointed owing to deformation of the carrying members. To mitigate both these accidents it is suggested that stirrups should he suspended by means of springs, and that in special cases a spiral spring should be interposed between the crown of the pipe and the structural member immediately above it. When pipes are carried in cradles, springs can be inserted in the rests to act as buffers or cushions. (Deutsche Bauzeitung, No. 58.)