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.
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