风管穿过需要封闭的防火防爆楼板或墙体时,应设钢板厚度不小于( )的预埋管或防护套管,风管与套管之间应采用不燃柔性材料密封。A.1.0mm B.1.2m...

作者: rantiku 人气: - 评论: 0
问题 风管穿过需要封闭的防火防爆楼板或墙体时,应设钢板厚度不小于( )的预埋管或防护套管,风管与套管之间应采用不燃柔性材料密封。
选项 A.1.0mm B.1.2mm C.1.4mm D.1.6mm
答案 D
解析 风管穿过需要封闭的防火防爆楼板或墙体时采取的措施。应设钢板厚度不小于1.6mm的预埋管或防护套管,风管与防护套管之间应采用不燃柔性材料封堵。风管穿越建筑物变形缝空间时,应设置柔性短管,风管穿越建筑物变形缝墙体时,应设置钢制套管,风管与套管之间应采用柔性防水材料填充密实。
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