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Fire-fighting shafts should be located to meet the maximum hose distances set out in this section and at least two should be provided in buildings with a storey of 900m2 or more in area, where the floor is at a height of more than 7.5m above Fire and Rescue Service vehicle access level (see section 8.4.2).

If the building is fitted throughout with an automatic sprinkler system that qualifies as a ‘life safety’ system, as defined in the SSLD document on sprinklers in schools, then sufficient fire-fighting shafts should be provided such that every part of every storey, that is more than 7.5m above Fire and Rescue Service vehicle access level (where covered by section 8.4.2), is no more than 60m from a fire main outlet in a fire-fighting shaft, measured on a route suitable for laying hose

If the building is not fitted with sprinklers then every part of every storey that is more than 7.5m above Fire and Rescue Service vehicle access level (where covered by section 8.4.2), should be no more than 45m from a fire main outlet contained in a protected stairway and 60m from a fire main in a fire-fighting shaft, measured on a route suitable for laying hose.

Note: In order to meet the 45m hose criterion it may be necessary to provide additional fire mains in escape stairs. This does not imply that these stairs need to be designed as fire-fighting shafts.

8.4.3 Number and location of fire-fighting shafts

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