Last edited 07 Jan 2021

Fire resistance of buildings

Approved document B, Fire Safety, Volume 2, Buildings other than dwellinghouses (2019 edition), defines fire resistance as:

'The ability of a component or a building to satisfy, for a stated period of time, some or all of the appropriate criteria given in the relevant standard.'

Fire resistance is a measure of one or more of the following:

Fire resistance is measured in minutes. This relates to time elapsed in a standard test and should not be confused with real time.

Performance in terms of the fire resistance to be achieved by elements of structure, doors and other forms of construction is classified in accordance with BS EN 13501.

Other information about fire resistance in the approved document includes:

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