BS 5911-200:1989 - Precast concrete pipes, fittings and ancillary products - Specification for unreinforced and reinforced manholes and soakaways of circular cross section
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This part of BS 5911 specifies the requirements, dimensions, materials, and performance criteria for precast concrete manholes and soakaways of circular cross section, which may be unreinforced or reinforced.
BS 5911-200:1989 - Precast concrete pipes, fittings and ancillary products - Specification for unreinforced and reinforced manholes and soakaways of circular cross section