ISO 11296-9:2022

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Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks — Part 9: Lining with a rigidly anchored plastics inner layer.

ISO 11296-9:2022, titled "Plastics piping systems for renovation of underground non-pressure drainage and sewerage networks — Part 9: Lining with a rigidly anchored plastics inner layer," specifies the requirements and test methods for pipes and fittings used in the renovation of underground non-pressure drainage and sewerage networks. This renovation technique involves lining the existing pipeline with a rigidly anchored plastics inner layer, which serves as permanent formwork anchored to a structural cementitious grout annulus formed behind it.