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BS6853 Annex D8.5 smoke density test

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BS6853 Annex D8.5 smoke density test
BS 6853 Annex D.8.5 is utilized for seats (Tables 9 of BS6853:1999).NB.Tests should be performed on actual specimen seats.
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.
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