1 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 operating under pressure is also covered by this European Standard together with prEN 805:1999 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
Additionally other local or national regulations should be taken into account, e.g. concerning health and safety, pavement installation, tolerances for deviation in line and level and requirements for leaktightness testing.
NOTE 2: Requirements for associated pipeline installation work other than trenchless construction, e.g. for manholes and inspection chambers, are given in EN 1610, Construction and testing of drains and sewers.