To assess the SPR™ 91-22 Rotaloc® lining system for use in the renovation of both fully and partially deteriorated circular gravity sewers with diameters 800 mm to 1800 mm.
It is not applicable to:
- • Watertightness of end seals; or
- • Reconnection of laterals.
SPR™ RO ST is a spirally wound pipe lining system. The system comprises a continuous profiled strip of PVC-U plastic reinforced with steel. The profiled strip is formed into a tubular liner configuration by a winding machine that travels along the host pipe, interlocking the strip into a tubular configuration against the host pipe as it goes.
Full details can be found in the Assessment Schedule opposite.