Loadbearing elements of structure Fire resistance standard

Department for Communities and Local Government, (2019) Loadbearing elements of structure Fire resistance standard. In: Approved Document B: Fire Safety - Volume 1: Dwellings. 2019 ed. Section 5: Internal fire spread – dwellinghouses, 1 (5.3). RIBA Publishing Publication, London, p. 50. ISBN 9781859469156

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The following are excluded from the definition of ‘element of structure’.
a. A structure that supports only a roof, unless either of the following applies.
i. The roof performs the function of a floor, such as a roof terrace, or as a means of escape.
ii. The structure is essential for the stability of an external wall that needs to be fire resisting (e.g. to achieve compartmentation or for the purposes of preventing fire spread between buildings).
b. The lowest floor of the building.
c. External walls, such as curtain walls or other forms of cladding, which transmit only self weight and wind loads and do not transmit floor load.
NOTE: In some cases, structural members within a roof may be essential for the structural stability system of the building. In these cases, the structural members in the roof do not just support a roof and must demonstrate the relevant fire resistance for the building as required by paragraph 5.2 above.

Item Type: Book Section
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: roof structure, element of structure, definition, external wall, roof, compartmentation, definitions, structures, wind load, unprotected area
Subjects: Section 05: Internal fire spread – dwellinghouses
B3: Internal fire spread (structure)
Building standards
Date Deposited: 15 Feb 2020 06:05
Last Modified: 29 Sep 2022 21:02
URI: https://buildvoc.co.uk/id/eprint/451

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