A concrete frame creates long spans that allow for column-free rooms on each level.
混凝土框架采用了长跨度，这样每个水平面可以有无柱的房间。
2
The facade, which contains a total of 350 Windows, allows for vast column-free Spaces internally on the building's two main levels.
立面总共包含350个窗户，允许在建筑物内部的两个主要楼层内建立大型无柱空间。
3
To guarantee the column-free space effect, all the emergency staircases, ventilating pipes and other auxiliary functions are gathered into the central concrete core.