Advisory Leaflet DWA-M 143-17E Rehabilitation of Drain and Sewer Systems Outside Buildings Part 17: Coating Wastewater Conduits, Pipes and Shafts with Cement-bonded Mortars

This Advisory Leaflet deals with coating procedures using mineral cement-bonded mortars in wastewater pipes, sewers and shafts and other installations, called „drain and sewer systems“ in the following. It may apply to accessible and non-accessible buried pipes and sewers from DN 100 upwards, from the point where wastewater leaves the building or the guttering system or flows into a street outlet, up to the point where the wastewater is channelled into a treatment plant or into the receiving water course. It may also be broadly applicable in the realm of drain and sewer systems. It does not apply to cement-free mortars, or reaction resin mortars. The coating mortars covered here are used for subsequent coating of concrete and brickwork, as well as pipes made of cast iron, steel and fibro-cement in all situations.