NFPA 251 建筑结构和材料耐火试验方法标准
日期:2012-02-10 14:35
NFPA 251 Standard Methods of Tests of Fire Resistance of Building Construction and Materials
NFPA 251 建筑结构和材料耐火试验方法标准
1-1.1 These methods of fire tests apply to assemblies of masonry units and to composite assemblies of structural materials for buildings, including bearing and other walls and partitions, columns, girders, beams, slabs, and composite slab and beam assemblies for floors and roofs. They also shall apply to other assemblies and structural units that constitute permane
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