This European Standard applies to a)manholes, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP);b)inspection chambers, when made from glass-reinforced thermosetting plastics (GRP) based on polyester resin (UP) which are intended to be used with inverts which are at a depth not exceeding 2 m.These products are intended to be used within a drain or sewer system operating without pressure or occasionally at a head of pressure up to 1 bar.It applies to products, and their joints, intended for use in buried installations and to be installed by open-trench techniques.The units have a circular shape with nominal sizes not exceeding the maximum nominal size specified in EN 14364.The intended use of these products is to provide access to, buried drain or sewer systems for the conveyance of waste water at temperatures up to 50 °C, without pressure or occasionally at a head of pressure up to 1 bar, outside buildings and installed in areas subjected to vehicle and/or pedestrian traffic.It specifies definitions including symbols, requirements and characteristics of manholes, inspection chambers, joints, materials, test methods and marking.NOTEIt is the responsibility of the purchaser or specifier to make the appropriate selections, taking into account their particular requirements and any relevant national regulations and installation practices or codes.