scope:

This European Standard is applicable to the trenchless construction and testing of new drains and new sewers in the ground, which are normally operating as gravity pipelines, formed using prefabricated pipes and their joints. The trenchless construction and testing of drains and sewers operation under pressure is also covered by this European standard together with EN 805 as appropriate. This European Standard also applies to trenchless replacement techniques. Renovation techniques for existing sewers and drains are not covered by this European Standard. Methods of trenchless construction include - manned and unmanned techniques; - steerable and non-steerable techniques.