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UL263 建筑结构和材料的耐火测试标准
UL263 Standard for Fire Tests of Building Construction and Materials
 
UL263标准适用范围
These fire tests are applicable 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 are also applicable to other assemblies and structural units that constitute permanent integral parts of a finished building.