Diagram 9.1 Enclosure for drainage or water supply pipes

Department for Communities and Local Government, (2019) Diagram 9.1 Enclosure for drainage or water supply pipes. [Image]

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Abstract

NOTES:
1. The enclosure should meet all of the following conditions.
a. Be bounded by a compartment wall or floor, an outside wall, an intermediate floor or a casing(see specification at 2 below).
b. Have internal surfaces (except framing members)of class B-s3, d2 or better.
Note: when a classification includes ‘s3, d2’, this means that there is no limit set for smoke production and/or flaming droplets/particles).
c. Not have an access panel which opens into a circulation space or bed room.
d. Be used only for drainage or water supply or vent pipes for a drainage system.
2.The casing should meet all the following conditions.
a. Be imperforate except for an opening for a pipe
or an access panel.
b. Not be of sheet metal.
c. Not have fire resistance less than E 30 (including any access panel).
3.The opening for a pipe, in either the element of structure or the casing, should be as small as possible and fire-stopped around the pipe.
See para 9.4 and Table 9.1

Item Type: Image
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: fire-stop (Fire-stopping), pipe, unprotected area, external wall, element of structure, dwelling type, vented (open) hot water storage system, room-sealed appliance, b4 external fire spread, non-combustible material
Subjects: K Law > The Building Regulations 2010 > B3: Internal fire spread (structure)
T Technology > TH Building construction > Building standards > fire safety - volume 1: dwellings. 2019 edition - for use in england > Section 9: Protection of openings and fire‑stopping
T Technology > TH Building construction > Building standards
Date Deposited: 14 Mar 2020 09:40
Last Modified: 13 Oct 2021 19:41
URI: https://eprints.buildvoc.co.uk/id/eprint/886

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