BS EN 13476 (PVC-U pipes)

BS EN 13476 is the UK and European Standard for unplasticised PVC pipes and fittings used in non-pressure underground drainage and sewerage. The standard specifies dimensions, mechanical properties, marking and testing requirements for products supplied across the UK market, including the orange-brown 110mm and 160mm pipes widely used in London new builds. The standard is referenced extensively in Building Regulations Part H Approved Documents and in Sewers for Adoption design codes. Practical implications for homeowners include reassurance that compliant pipework supplied by major UK merchants meets a recognised performance standard, while contractors should retain evidence of BS EN 13476 marking for Building Control inspection. The standard is regularly read in conjunction with BS EN 1610 for pipe installation. The formal reference is BS EN 13476-2:2018 for socket and spigot systems, with BS EN 13476-3 covering structured wall pipes.