GSO BS 476-3:2024
BS 476-3:2004
Gulf Standard
Current Edition
·
Approved on
14 October 2024
Fire tests on building materials and structures - Part 3: Classification and method of test for external fire exposure to roofs
GSO BS 476-3:2024 Files
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GSO BS 476-3:2024 Scope
The tests given in this British Standard are designed to enable measurement of:
- a) capacity of a representative section of a roof to resist penetration by fire when the external surface is exposed to radiation and flame; and
- b) distance of the spread of flame on the outer surface of the roof covering under certain conditions.
Roofs are graded according to the angle at which they are tested, the time for which they resist penetration by fire, and the distance of superficial spread of flame on their external surface.
An additional test for rooflights is given in Annex C.
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