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British Standard groups and classes

Choosing the right product

The applicable British Standard in the UK for access covers and gully grates is BS EN 124:2015. This standard divides access covers and gully grates into a number of classes by static test load. It also categorises the various places where they may be installed from Group 1, the least demanding environment, through to Group 6, the most demanding environment. It provides guidance on the minimum class to be used against each installation group.

  Class Description
  Group 1
minimum class A15
Access covers and gratings capable of withstanding a 15kN test load. For use in areas where only pedestrians have access.
  Group 2
minimum class B125
Access covers and gratings capable of withstanding a 125kN test load. For use in car parks and pedestrian areas where only occasional vehicular access is likely.
  Group 3
minimum class C250
Access covers and gratings capable of withstanding a 250kN test load. For use in car parks, forecourts, industrial sites and areas with slow moving traffic also in highway locations up to 500mm from the kerb and up to 200mm into the verge, excluding motorways.
  Group 4
minimum class D400
Access covers and gratings capable of withstanding a 400kN test load. For use in areas where cars and lorries have access, including carriageways, hard shoulders and pedestrian areas.
  Group 5
minimum class E600
Access covers and gratings capable of withstanding a 600kN test load. For use in areas where high wheel loads are imposed such as loading areas, docks or aircraft pavements.
  Group 6
minimum class F900
Access covers and gratings capable of withstanding a 900kN test load. For use in areas where particularly high wheel loads are imposed such as aircraft pavements.

All Wrekin ductile access covers and gully grates comply with BS EN 124:2015-2, however it is widely recognised that there are times when the static load means of measurement and categorisation used in the standard is inadequate. It fails to take into account how the cover interacts with the frame or the actual dynamic loads and forces to which access covers and gully grates can be subjected in practice and over time.

This is particularly the case in Group 4 class D400 access covers and it is for this reason that Wrekin have designed and supply three different ranges of D400 access covers.