The towers had an unusual feature: they were supported by load-bearing external walls and internal cores. There were no columns intersecting the office floors, giving a highly efficient floorplate (see below).
The external walls consisted of thick load-bearing columns in aluminium-clad steel, which alternated with narrow windows. These acted as giant vierendeel trusses but gave the building an oppressive cage-like appearance.
- Other, Size 0 kb