BS 476-5 Fire tests on building materials and structures part 5.Method of for ignitability

1.SCOPE

This part of this British Standard specifies a method of test for the determination of the ignitability characteristics of the exposed surfaces of essentially flat, rigid or semi-rigid building materials or composites, when tested in the vertical position.

 2.REFERENCE

Standards publication referred to

BS 4422 Glossary of terms associated with fire

 3.Definitions

For the purposes of this British Standard, the definitions given in BS 4422 apply, together with the following.

• The material or composite about which information is required.
• A basic single substance or uniformly dispersed mixture.
• A combination of materials that are ganerlly recognized in building constru as discrete entities.
• Exposed surface. That surface of the product subjected to the heaing conditions of the test.