BS476-21/BS 476-21:1987承重材料耐火性測試

BS 476-21: 1987承重材料耐火性測試
BS 476-21: Fire test on building materials and structures-Part 21: Method for Determination of the fire resistance of load bearing elements of construction.
BS 476-21: 建築材料和構件的防火測試-第21部分: 承重材料耐火性測試

This part, together with BS 476: Parts 20, 22, 23 and supersedes BS 476: Part 8:1972, which is withdrawn. However, the latter will still be made available on request, since it is referred to in the building regulations and other legislative documents.

BS 476-21: 1987主要用於如下方面:
Determination of the fire resistance of beams 橫樑的耐火測試
Determination of the fire resistance of columns 圓柱的耐火測試
Determination of the fire resistance of floors and flat roofs 地面材料及天花板的耐火測試
Determination of the fire resistance of walls 牆體的耐火測試

BS 476-21測試方法，樣品暴露下高溫高壓條件下，測試樣品在規定時間內的承重量，完整性、隔熱性。

BS 476-21: 1987可申請耐火測試時間:

30分鐘
60分鐘
90分鐘
120分鐘
150分鐘
180分鐘
、、、、、、

BS 476 相關參考標準
BS 476: Fire tests on building materials and structures.
BS 476: 建築材料及構件防火測試

BS 476-3:2004 external fire exposure roof test
BS 476-3:2004 室外屋頂的燃燒測試

BS 476-4:1970 Non-combustibility test for materials
BS 476-4:1970 材料的不燃燒性測試

BS 476-5:1979 Method of test of ignitability
BS 476-5:1979 可燃性燃燒測試

BS476-6:1989 Method of test for propagation for materials
BS476-6:1989 製品火勢蔓延的試驗方法

BS 476-7:1997 Surface spread of flame test for material
BS 476-7:1997製品表面火勢蔓延的試驗和分級方法

BS 476-11:1982 Method for assessing the heat emission from building materials
BS 476-11:1982建築材料熱輻射性能測試方法

BS 476-12:1991 Ignitability of products by direct flame impingement
BS 476-12:1991產品直接火焰衝擊的可燃性測試方法

BS 476-15:1992 Method for measuring heat release of products-cone calorimeter
BS 476-15:1992產品放熱性測試-錐形量熱儀

BS 476-20:1987 Method for determination of the fire resistance of elements of construction (general principles)
BS 476-20:1987建築構件耐火的測定方法(一般原理)

BS 476-21:1987 Methods for determination of the fire resistance of loadbearing elements of construction
BS 476-21:1987 承重構件耐火的測定方法

BS 476-22:1987 Methods for determination of the fire resistance of non-loadbearing elements of construction
BS 476-22:1987非承重建築構件耐火性能測試方法

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