NFPA 251 建筑结构和材料耐火试验方法标准
日期:2012-02-10 14:35
erformance of protective membranes in wall, partition, floor, or roof assemblies
Improved for better application and performance!
Technical revisions include the addition of definitions of fire resistance and fire resistance rating, and modifications to the hose stream test requirements. The document also complies with NFPA's Manual of Style. (Softbound, 29 pp., 2006)
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