BS 476-21: 1987承重材料耐火性测试

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: 建筑材料和构件的防火测试-第21部分: 承重材料耐火性测试

This part, together with BS 476: Parts 20, 22, 23 and supersedes BS 476: Part 8:1972, which is withdrawn.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主要用于如下方面:

Determination of the fire resistance of beams  横梁的耐火测试

Determination of the fire resistance of columns 圆柱的耐火测试

Determination of the fire resistance of floors and flat roofs 地面材料及天花板的耐火测试

Determination of the fire resistance of walls 墙体的耐火测试

BS 476-21测试方法，样品暴露下高温高压条件下，测试样品在规定时间内的承重量，完整性、隔热性。

BS 476-21: 1987可申请耐火测试时间:

30分钟

60分钟

90分钟

120分钟

150分钟

180分钟

、、、、、、

BS 476 相关参考标准

BS 476: Fire tests on building materials and structures.

BS 476: 建筑材料及构件防火测试

BS 476-3:2004 external fire exposure roof test

BS 476-3:2004 室外屋顶的燃烧测试

BS 476-4:1970 Non-combustibility test for materials

BS 476-4:1970 材料的不燃烧性测试

BS 476-5:1979 Method of test of ignitability

BS 476-5:1979 可燃性燃烧测试

BS476-6:1989 Method of test for propagation for materials

BS476-6:1989 制品火势蔓延的试验方法

BS 476-7:1997 Surface spread of flame test for material

BS 476-7:1997制品表面火势蔓延的试验和分级方法

BS 476-11:1982 Method for assessing the heat emission from building materials

BS 476-11:1982建筑材料热辐射性能测试方法

BS 476-12:1991 Ignitability of products by direct flame impingement

BS 476-12:1991产品直接火焰冲击的可燃性测试方法

BS 476-15:1992 Method for measuring heat release of products-cone calorimeter

BS 476-15:1992产品放热性测试-锥形量热仪

BS 476-20:1987 Method for determination of the fire resistance of elements of construction (general principles)

BS 476-20:1987建筑构件耐火的测定方法(一般原理)

BS 476-21:1987 Methods for determination of the fire resistance of loadbearing elements of construction

BS 476-21:1987 承重构件耐火的测定方法

BS 476-22:1987 Methods for determination of the fire resistance of non-loadbearing elements of construction

BS 476-22:1987非承重建筑构件耐火性能测试方法