LOW LOAD PIPE FOR PIPE JACKING

摘要

A low load pipe for pipe jacking. The pipe body includes a socket section with a projecting annular rib at an external edge of the socket and a spigot section. The socket section has an internal diameter and an external diameter larger than the external diameter of the pipe body. The said spigot section has a length slightly longer than the length of the socket section. There is an outer pipe having a smooth external surface and an external diameter almost equal to the external diameter of the projecting annular rib. Rails project from the internal diameter of the outer pipe. The pipe body, with the socket section and the spigot section, define a gap with the outer pipe which is filled with a filler material which adheres to the projecting rails. The filler material is retained in the gap.