Civil Engineering Association

Anybody having this document pls share...also tell me what does it means by CLASS 1 of BS 476:PART-7?

BS 476-7:1997 Fire tests on building materials and structures Part 7. Method of test to determine the classification of the surface spread of flame of products

This Part of BS 476 specifies a method of test for measuring the lateral spread of flame along the surface of a specimen of a product orientated in the vertical position under opposed flow conditions, and a classification system based on the rate and extent of the spread of flame. It provides data suitable for comparing the end-use performances of essentially flat materials, composites or assemblies, which are used primarily as the exposed surfaces of walls or ceilings. Annex A gives guidance to operators carrying out this method of test. Annex B discusses the effect of thermal characteristics on the performance of assemblies and gives advice on the construction and preparation of test specimens. Annex C gives information on the validation of this method.

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Civil Engineering Association

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