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Home   Construction materials   BS 476-4:1970 Non-Combustibility

BS 476-4:1970 Non-Combustibility

BS 476-4:1970 Non-Combustibility

BS 476-4 Fire tests on building materials and structures- Part 4: Non-combustibility test for materials

The specimen is weighted and placed into a basket. A thermocouple is inserted into the centre of the specimen and connected to the logging equipment. In addition the specimen thermocouple, there is also a thermocouple placed inside of the furnace. The specimen is lowered into the furnace (which is set at 750°C) and remains in this position for the entire 20 minute test duration.


Evaluate BS 476-4 non-combustible testing

Temperature rise (furnace and centre of specimen) should be ≤ 50°C

Period of sustained flaming should be ≤ 10 seconds


BS 476 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 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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