BS476Part7Class要符合什么要求?BS476Part7Class1,BS476Part7Class0需要怎么去做？

Question

BS476 Part 7 Class要符合什么要求?
BS476 Part 7 Class 1,BS476 Part 7 Class 0 需要怎么去做？

Answer 1

申请Class 1需要根据BS476-7标准进行测试.
BS476 class 1标准要求:
The flame spread on the material surface should smaller than 165mm from the reference measuring point.
BS476 class 0标准要求:
1.The material must meet the requirement of Class 1 results to BS 476 Part 7
2.have a sub-index I1 ≤ 6 and a total index I ≤ 12 results to BS 476 Part 6
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