Rebuild project, CityGate office building C,
Measuring approx. 70 x 22 m (plan view), the roughly 25 m high office building consists of a ground floor, 6 upper stories and 2 mixed-use basement stories containing archive, storage and equipment rooms as well as a two-level parking garage. On the north side of the building, the upper stories cantilever out prominently 6 m above the ground floor. In order to limit deformation, the cantilevering section of the ceiling block was constructed as a prestressed ribbed bubble slab.
The stability of the building is provided by two centrally positioned compact core zones which are completely embedded in the rigid basement stories.