BS476-21承重耐火测试承重材料 BS476-21:1987 Fire test on building materials and structures-Part 21: Method forDetermination of the fire resistance of load bearing elements of construction. BS476-21:1987 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
BS476-21耐火测试适用范围 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