GB50016-2014建筑设计防火规范(耐火极限)

一级二级防火墙不燃性3.00不燃性3.00承重墙不燃性3.00不燃性2.50楼梯间和前室的墙电梯井的墙不燃性2.00不燃性2.00疏散走道两侧的隔墙不燃性1.00不燃性1.00非承重外墙房间隔墙不燃性0.75不燃性0.50不燃性3.00不燃性2.50不燃性2.00不燃性1.50不燃性1.50不燃性1.00不燃性1.50不燃性1.00不燃性1.50不燃性1.00不燃性0.25不燃性0.25耐火等级墙柱吊顶构件名称梁楼板屋顶承重构件疏散楼梯三级四级不燃性3.00不燃性3.00不燃性2.00不燃性0.50不燃性1.50不燃性0.50不燃性0.50不燃性0.50不燃性0.50不燃性0.25不燃性2.00不燃性0.50不燃性1.00不燃性0.50不燃性0.75不燃性0.50不燃性0.50可燃性不燃性0.75可燃性不燃性0.15可燃性耐火等级