NFPA 251建筑材料耐火测试
日期:2020-03-30 14:47
thods to evaluate the dura tion for which the types of assemblies noted in 1.3.1 contain a fire, retain their structural integrity, or exhibit both proper ties, depending on the type of assembly involved during a pre-
determined test exposure.It is the intention of this standard that fire resistance ratings be based on performance during the period of expo sure and not be used to determine suitability for use after fire exposure The results of these tests are one factor in assessing fire perform
2/3 下一页 上一页 首页 尾页
返回
刷新
WAP首页
网页?/a>
登录
12/23 16:31