Trenchless Technology & Subsurface Construction

Chapter 9

Cured-In-Place Pipe (CIPP)

Cured-in-place pipe consists of a flexible fabric tube impregnated with a thermosetting resin. The tube is inserted in the existing pipe and either winched or inverted into place with water pressure. Injected steam or hot water cures the resin and shapes the tube into the form of the existing pipe. Application of heat hardens the resin after a few hours, forming a jointless pipe-within-a-pipe.

Lateral pipes are reinstated from inside the completed cured-in-place pipe by robotically cutting the liner where the existing lateral pipes are located. Sewers from 4 to 96inch diameter (10 to 244cm) have been successfully lined using cured-in-place pipe.....................for more details