Open Trench Method

This method is predominately used when other utilities are in the vicinity of the proposed route. The main is installed by excavating a trench with the appropriate sized excavator depending on surface types and pipe diameters, the main is then laid, chlorinated and pressure tested before the new connections take place, once the connections have been carried out the work area can be reinstated.

Insertion/Slip Lining

This method is used when it is possible to down size the existing pipe, the existing section of main will be cut out at either end, the main will then be cleaned and the new main pulled through with the use of a winch, the main is then chlorinated and pressure tested before the new connections take place, once the connections have been carried out the work area can be reinstated.

Case Studies