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住宅工程楼梯间的构造决定了其外墙圈梁与楼层圈梁标高存在差异(如图1,一般相差半个楼层高度),因而不能与楼层圈梁同时施工,给外
The structure of the stairwell of a residential project determines that there is a difference between the elevation of the outer wall ring beam and the floor ring beam (as shown in Figure 1, which generally differs by half the height of the floor), and therefore cannot be constructed simultaneously with the floor ring beam.