Precast unreinforced and reinforced concrete components for manholes over buried drains and sewers - Dimensions and technical delivery conditions— 16 стр.
Vitrified clay pipes and fittings and pipe joints for drains and sewers - Part 1: Requirements (includes Amendment A1:1996, Amendment A2:1996 and Amendment A3:1999); German version EN 295-1:1991 + A1:1996 + A2:1996 + A3:1999— 17 стр.
Plastics piping systems for non-pressure underground drainage and sewerage - Unplasticized poly(vinyl chloride) (PVC-U) - Part 1: Specification for pipes, fittings and the system; German version EN 1401-1:1998— 26 стр.
Contract procedures for building works - Part C: General technical specifications for building works; General rules for all kinds of building works— 12 стр.