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smoke-proof staircase
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smoke-proof staircase
Encyclopedia
工学
疏散楼梯间
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smoke-proof staircase
防烟楼梯间
为防止火灾时烟和热气进入,在入口处设有防烟的前室、敞开式阳台或凹廊(统称为前室)等设施的楼梯间。通向前室和楼梯间的门均为乙级防火门,以防止火灾时的烟和热气进入的楼梯间。
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更新时间:2025/10/14 13:21:59