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Home  Fire Resistance BS476-24 Fire resistance of Ventilation ducts /BS 476 Part 24 |
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BS476-24 Fire resistance of Ventilation ducts /BS 476 Part 24
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√ BS476-24 Fire resistance-Standard
BS 476-24: Fire tests on building materials and structures-Part 24: Method for determination of the fire resistance of ventilation ducts
√ BS476-24 Fire resistance-Standard Brief
This International Standard specifies a method of test and criteria for the determination of the fire resistance of vertical and horizontal vertilation ducts under standardized fire conditions
√ fire resistance
the time for which an element of building construction is able to withstand exposure to a standard temperature/time and pressure regime without a loss of its fire separating function or loadbearing function or both
√ Performance criteria
The fire resistance of the test construction shall be assessed against one or more of the criteria for loadbearing capacity, integrity and insulation, whichever are relevant to the elements used in practice
√ BS476-24 Fire resistance-Test time
30 minute
60 minute
90 minute
120 minute
150 minute
180 minute
……
√ BS476-22 Fire resistance-Reference standard
BS 476: Fire tests on building materials and structures.
BS 476-3:2004 external fire exposure roof test
BS 476-4:1970 Non-combustibility test for materials
BS 476-5:1979 Method of test of ignitability
BS 476-6:1989+A1:2009 Method of test for propagation for materials
BS 476-7:1997 Surface spread of flame test for material
BS 476-11:1982 Method for assessing the heat emission from building materials
BS 476-12:1991 Ignitability of products by direct flame impingement
BS 476-15:1992 Method for measuring heat release of products-cone calorimeter
BS 476-20:1987 Method for determination of the fire resistance of elements of construction (general principles)
BS 476-21:1987 Methods for determination of the fire resistance of loadbearing elements of construction
BS 476-22:1987 Methods for determination of the fire resistance of non-loadbearing elements of construction
ISO 834 Fire resistance tests-Elements of buildindg construction
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Source：防火网 Addtime：3/15/2023 Hits：553
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