Air circulation systems

Department for Communities and Local Government, (2019) Air circulation systems. In: Approved Document B: Fire Safety - Volume 1: Dwellings. 2019 ed. Section 2: Means of escape - dwellinghouses, 1 (2.9). RIBA Publishing Publication, London, p. 14. ISBN 9781859469156

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All of the following precautions should be taken to avoid the spread of smoke and fire to the protected stairway.
a. Transfer grilles should not be fitted in any wall, door, floor or ceiling of the stair enclosure.
b. Any duct passing through the stair enclosure should be rigid steel. Joints between the ductwork and stair enclosure should be fire-stopped.
c. Ventilation ducts supplying or extracting air directly to or from a protected stairway should not serve other areas as well.
d. Any system of mechanical ventilation which recirculates air and which serves both the stair and other areas should be designed to shut down on the detection of smoke within the system.
e. For ducted warm air heating systems, a room thermostat should be sited in the living room. It should be mounted at a height between 1370mm and 1830mm above the floor. The maximum setting should be 27°C.
NOTE: Ventilation ducts passing through compartment walls should comply with the guidance in Section 9.

Item Type: Book Section
Additional Information: mml-maui-text-analytics-keywords
Uncontrolled Keywords: fire-stop (Fire-stopping), protected stairway, should, direct distance, passive stack ventilation (psv), principal works, total useful floor area, appliance ventilation duct, room-sealed appliance, total useful floor area
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 20:34
Last Modified: 13 Oct 2021 19:40

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