Compartmentation requirements by building purpose group

(c) in a building of Purpose Group 2 – (i) every floor; and (ii) in the case of a health care building – a wall needed to divide a storey into compartments for means of escape purposes; (d) in a building of Purpose Group 4, 6 or 7 a wall or floor provided to divide the building into different occupancies (i.e. ownership, tenancies or similar); and (e) in a building of Purpose Group 3, 4, 5, 6, or 7 – (i) a wall which is needed to subdivide a building, or separated part of a building, so that the maximum floor area or maximum volume, as appropriate, of a compartment given in Table 4.4 is not exceeded; (ii) every floor in a building or a separated part of a building (other than the lowest floor) where that building or separated part has a floor at a height of more than 30 m above ground level; (iii) the floor of the ground storey where a building or separated part of a building has one or more basements (with the exception of a small building described in paragraph 2.68); and (iv) every basement floor in a building, or a separated part of a building (other than the lowest basement floor), where that building or separated part has a floor at a depth of more than 10 m below ground level.