BS6853 Annex D8.6 smoke density test using floor test method

1. Standard- BS6853 Annex D8.6
BS6853 Annex D: Methods for measuring smoke density
BS6853:1999 Code of practice for fire precautions in the design and construction of passenger carrying trains.

BS 6853 Annex D.8.6 is utilized for interior and exterior horizontal supine surfaces (Tables 1 and 4 of BS 6853:1999) and mattresses (table 12 of BS 6853: 1999). 

2. Standard Brief-BS6853 Annex D8.6
The smoke density measurement taken from a material under fire conditions gives an indication of the visibility through the smoke, this is important as reduced visibility in a real fire situation makes it more difficult to escape from a fire hence increasing the threat to human life from the toxic gases, flames and heat. 

BS6853 Annex D.8.6—smoke density test using floor test method

3. BS6853:1999 Standard requirement for Smoke density testing 
Interior horizontal supine surface for BS6853 (BS6853 table 1) requirement: A0≤220
Exterior horizontal supine surface for BS6853 (BS6853 table 4) requirement: A0≤370
Mattresses for BS6853 (BS6853 table 12) requirement: A0≤220 

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