Alternative B: Pipes with a restricted diameter

Department for Communities and Local Government, (2019) Alternative B: Pipes with a restricted diameter. In: Approved Document B: Fire Safety - Volume 1: Dwellings. 2019 ed. Section 9: Protection of openings and fire‑stopping, 1 (9.4). RIBA Publishing Publication, London, p. 69. ISBN 9781859469156

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Abstract

Where a proprietary sealing system is not used, fire-stop around the pipe, keeping the opening for the pipe as small as possible. The nominal internal diameter of the pipe should not exceed the relevant dimension given in Table 9.1. The diameter given in Table 9.1 for pipes of specification (b) used in situation 2 or 3 assumes that the pipes are part of an above-ground drainage system and are enclosed as shown in Diagram 9.1. If they are not, the smaller diameter given for situation 5 should be used.

Item Type: Book Section
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: fire-stop (Fire-stopping), pipe, in use, should
Subjects: Section 09: Protection of openings and fire‑stopping
B3: Internal fire spread (structure)
Building standards
Date Deposited: 15 Feb 2020 05:47
Last Modified: 29 Sep 2022 21:00
URI: https://buildvoc.co.uk/id/eprint/626

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