BS 476 Part 3屋頂材料防火測試_英標BS476-3屋頂防火測試

外部屋頂材料需要具備防火阻燃性，阻止火勢的快速蔓延。外部屋頂材料防火性能根據英標BS476-3進行測試及等級評估。中國防火網攜手英國UKAS資質EXOVA Warringtonfire實驗室提供BS 476 Part 3測試報告及等級評估。諮詢電話：025-86583475。

BS 476-3: Fire test on building materials and structures-Part 3: Classification and method of test for External fire exposure roof test.
BS 476-3: 建築材料和構件的防火測試-第3部分: 外部屋頂著火測試方法及分類

屋頂防火測試等級分類：Classification for External fire exposure roof test
屋頂系統分類EXT.F或者EXT.S。
水準屋頂系統（Flat (horizontal) roof system）為EXT，傾斜屋頂系統（inclined roof system）為EXT.S。
Classification for External fire exposure roof test
Roof systems shall be designated by the letters EXT.F or EXT.S to indicate whether the test results apply to a flat (horizontal) or an inclined roof system, respectively.

Roof systems subject to conditions of external fire shall be classified according to both the time of penetration and the distance of spread of flame along their external surface.
Each category designation shall consist of two letters, eg. AA, AC, BB, these being determined ad specified in 1 and 2

BS476-3建築材料防火測試相關標準
BS476-4不燃性測試        http://www.firete.com/test_method/558.html
BS476-6火焰傳播指數測試  http://www.firete.com/test_method/560.html
BS476-7防火等級測試      http://www.firete.com/test_method/561.html

更多關於戶外屋頂材料的BS476-3防火測試測試的相關內容，請諮詢中國防火網
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 来源：防火网　发布时间：8/20/2014 点击次数：2314