Dwellinghouses with one storey more than 4.5m above ground level

Department for Communities and Local Government, (2019) Dwellinghouses with one storey more than 4.5m above ground level. In: Approved Document B: Fire Safety - Volume 1: Dwellings. 2019 ed. Section 2: Means of escape - dwellinghouses, 1 (2.5). RIBA Publishing Publication, London, p. 11. ISBN 9781859469156

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Abstract

See Diagram 2.1c. The dwellinghouse should have either of the following.
a. Protected stairway – a stair separated by fire resisting construction (minimum REI 30) at all storeys, that complies with one of the following.
i. Extends to a final exit (Diagram 2.2a).
ii. Gives access to a minimum of two ground level final exits that are separated from each other by fire resisting construction (minimum REI 30) and fire doorsets (minimum E 20) (Diagram 2.2b).

Cavity barriers or a fire resisting ceiling (minimum EI 30) should be provided above a protected stairway enclosure (Diagram 2.3).

b. Alternative escape route – a top storey separated from lower storeys by fire resisting construction (minimum REI 30) and with an alternative escape route leading to its own final exit.

Item Type: Book Section
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: alternative escape routes, alternative exit, fire doorset, protected stairway, storey exit, final exit, fire resistance, fire-separating element, exit passageway, escape route
Subjects: T Technology > TH Building construction > Building standards > fire safety - volume 1: dwellings. 2019 edition - for use in england > Section 2: Means of escape – dwellinghouses
K Law > The Building Regulations 2010 > B1: Means of warning and escape
T Technology > TH Building construction > Building standards
Date Deposited: 30 Jan 2020 20:26
Last Modified: 13 Oct 2021 19:41
URI: https://eprints.buildvoc.co.uk/id/eprint/94

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