Sewer & drain lining techniques

Over 225mm diameter

The following techniques all have variants that can be used in pipes over 225mm diameter.  Their suitability and applicability will depend on issues such as the time available on site, the available site footprint for equipment, the hydraulic capacity of the pipe, the loadings that will occur, man hole availability and size, bend direction and degree, required service life and budget restraints.

With the larger liners, their weight and handling requirements make ambient techniques very difficult in practice.