BS476-23 建筑部分构件耐火分摊性能判定

BS 476-23:Fire Tests on Building Materials and Structures Part 23 Methods for Determination of the Contribution of Components to the Fire Resistance of a Structure BS476-23:建材及构件的防火测试.第23部分元部件对构件耐火性分摊作用的测试方法