Concrete manholes and inspection chambers

[ir_71]

Concrete manholes and inspection chambers

EN 1917:2002 Concrete manholes and inspection chambers, unreinforced, steel fibre and reinforced + AC:2006
This European Standard specifies performance requirements as defined in table 1 and describes test methods for precast concrete units, including joints (elastomeric, plastomeric or other sealing materials, either integrated in the unit or supplied separately), for inspection chambers designed to be used for inverts not exceeding 2 metres deep and manholes, of circular, rectangular (with or without chamfered or rounded corners) or elliptical internal shape, unreinforced, steel fibre and reinforced, with nominal sizes not exceeding DN 1250 for units with a circular bore or LN 1250 for units with a rectangular or elliptical shape.

BS 5911-3:2010 Concrete pipes and ancillary concrete products Part 3: Specification for nreinforced and reinforced concrete manholes and soakaways (complementary to BS EN 1917:2002)
BS EN 1917 specifies requirements and describes test methods for precast concrete manholes of circular, rectangular (with or without chamfered or rounded corners) or elliptical cross-section, unreinforced, steel fibre and reinforced, with nominal sizes or nominal lengths not exceeding DN 1250 or LN 1250, respectively. The intended use of BS EN 1917 is to permit access to, and to allow aeration of, drain or sewer systems for the conveyance of sewage, rainwater and surface water under gravity or occasionally at low head of pressure, mainly installed in areas subjected to vehicular and/or pedestrian traffic.
This part of BS 5911 specifies complementary requirements to those in BS EN 1917 for unreinforced and reinforced concrete manholes of circular and rectangular cross-section (with or without chamfered or rounded corners), as provided for in BS EN 1917, i.e. units with nominal sizes or nominal lengths not exceeding DN 1250 or LN 1250, respectively. Full requirements for unreinforced and reinforced concrete manholes with nominal sizes greater than DN 1250, but not exceeding DN 3000, are also specified. The manholes are intended to be installed in carriageways of roads (including pedestrian streets), hard shoulders and parking areas for all types of road vehicles, though provision is also made for units subject to lighter traffic loading. Requirements for soakaways, landing slabs and corbel slabs are also specified. BS EN 752, BS EN 1295-1 and BS EN 1610 deal with the planning, design, installation and testing of drains and sewers.

:JC_cheers:

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