√ BS476-20 Fire resistance-Standard BS 476-20: Fire tests on building materials and structures-Part 20: Method for determination of the fire resistance of elements of construction (general principles)
√ BS476-20 Fire resistance-Standard Brief
This Part of BS 476 describes a procedure for a laboratory test for the determination of fire resistance of elements of construction.
√ 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
√ BS476-20 Fire resistance-Test time 30 minute 60 minute 90 minute 120 minute 150 minute 180 minute ……
√ BS476-20 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 BS476-6:1989+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
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