The influence of vertical rigidity ratio in transfer story is greater than that of transfer story position and box height on structure dynamic property.

转换层上下刚度比对结构的动力特性影响，较转换层位置和箱体高度影响大。

youdao

Twenty feet wide, it is the building's organizing element and circulation spine, connecting the first four floors and continuing upward with bridges across the space and a narrower stair above as it ascends to the structure's full nine-story height.

WSJ: Cooper Union's New Building, at 41 Cooper Square | By WSJ Architecture Critic Ada Louis Huxtable