England and Wales: Approved Document B

摘要

Structural fire resistance requirements in Approved Document B for multi-storey buildings are a function of occupancy and the height of the building. It should be noted that height is not the overall height of the building but is the distance from the ground to the the top floor. The required fire resistance periods are contained in Table A2. They should not be read in isolation but in conjunction with the accompanying notes and Table A1: Specific provisions of test for fire resistance of elements of structure.