Quoting the immediate neighboring buildings around the site, the design derives from a simple, large volume, a slab. Its position is defined by the pedestrian axis in the northwest. This slab however reacts to two implications. One is the pedestrian axis that connects the site with the S-Bahn Station, the other one is a visual connection between the Hollein tower and the lively cross of Karl Auboeck Promenade and Donau City Street.
The slab reacts with two movements. In the first place it is cut parallel to the axes, once from the bottom for the pedestrian passage, once from the top for the view to the Hollein Tower. The cuts and possible views modulate the slab. It gets subdivided in organizational units. It starts an interaction with its urrounding. It gains lightness. Thus it combines the qualities of an efficient housing slab and a local figure, a landmark.
Respecting and answering DC’s aim for multiplicity, the design incorporates different housing types. Subsidized housing and free market apartments mix under the same roof, accompanied by communal functions like a fitness, a swimming pool, green facilities and some shopping.