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请问地下室封闭楼梯间的设计要求是什么？

请问地下室封闭楼梯间的设计要求是什么？

浏览：55次 | 提问时间： 08-03 05:48

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萌比萌比蹦擦擦 08-03 05:48

1，住宅建筑套内自用地下室楼梯间一般情况梯间形式不限，亦不用与地上分隔，也不必直通室外。住宅地下室与公共地下车库之间要按防火分区进行防火分隔。2，室内地面与室外出入口地坪高差大于10m或3层及以上的地下、半地下建筑(室)，其疏散楼梯应采用防烟楼梯间；其他地下或半地下建筑(室)，其疏散楼梯应采用封闭楼梯间，不能自然通风或自然通风不能满足要求时，应设置机械加压送风系统或采用防烟楼梯间。（其楼梯间形式与地上建筑的楼梯间形式无关。） 3，应在首层采用耐火极限不低于2．00h的防火隔墙与其他部位分隔并应直通室外，确需在隔墙上开门时，应采用乙级防火门。4，建筑的地下或半地下部分与地上部分不应共用楼梯间，确需共用楼梯间时，应在首层采用耐火极限不低于2．00h的防火隔墙和乙级防火门将地下或半地下部分与地上部分的连通部位完全分隔，并应设置明显的标志。5，当地下楼梯间确因条件限制难以直通室外时，可以在首层通过与地上疏散楼梯共用的门厅直通室外。

还有我 08-03 05:57

1.除楼梯间的疏散门之外，楼梯间的内墙上不应开设其它门窗洞口； 2.通向封闭楼梯间的门应采用乙级防火门，并应向疏散方向开启； 3.封闭楼梯间靠外墙每五层内可开启外窗总面积之和不应小于2.00m2；可开启外窗宜设置在外墙上方，并应有方便开启的装置。 4.当不能天然采光和自然通风时，应按防烟楼梯间的要求设置；

小暧昧゜ 08-03 06:05

你好，地下室封闭楼梯间的设计要求是：1楼梯间应能天然采光和自然通风，并宜靠外墙设置； 2楼梯间内不应设置烧水间、可燃材料储藏室、*道； 3楼梯间内不应有影响疏散的凸出物或其它障碍物； 4楼梯间内不应敷设甲、乙、丙类液体管道； 5公共建筑的楼梯间内不应敷设可燃气体管道； 6居住建筑的楼梯间内不应敷设可燃气体管道和设置可燃气体计量表。当住宅建筑必须设置时，应采用金属套管和设置切断气源的装置等保护措施。希望我的回答对你有所帮助！

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