排烟防火阀距墙端面不应大于200mm [课程编码4577]

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排烟防火阀距墙端面不应大于200mmpyazbggdrnibufxdbntnvamygl

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错误案例：_{iekheeneivqnvoxzmascdsgwmwwd}

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规范要求pehwupyvorgcglvvxlw

《建筑防排烟系统技术标准》(GB 51251-2017)binypedmapxhijjxgahufvmc

6.4.1  排烟防火阀的安装应符合下列规定：pervrwahdmyw

    2  阀门应顺气流方向关闭，防火分区隔墙两侧的排烟防火阀距墙端面不应大于200mm；_{iekheeneivqnvoxzmascdsgwmwwd}

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正确做法_{ngkxaoryiiqyawwecifsvdkqlpnqzezrvxeaiivlpvsmhtq}

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