发布时间:2025-01-31 03:04:33
风管穿越防火墙时必须安装防火阀是正确的。通风管道不宜穿越防火墙,穿越时应在穿越处设置防火阀。穿越防火墙两侧各2.0m范围内的风管、保温材料应采用不燃烧材料,穿越处的空隙应采用不燃烧材料封堵。当通风道为混凝土或砖砌风道时,可不设防火阀,但其侧壁上的孔口宜设置防火阀。
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