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一个底框砖混商住楼的底框大梁穿过上部住宅卫生间，合理吗？ - 工程施工 - 项目管理 - 氿上知道
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卫生间的底面标高不一定平楼底面，
底框大梁的截面应该比较高，不必要平此大梁底面。当卫生间做沉箱时，可以考虑卫生间的底面标高比楼面低500~600mm就可。