Concept visualizations

Model of ribbon column

Perspective Lagerstrasse (visualization: Raumgleiter, Zürich)

Perspective North (visualization: Raumgleiter, Zürich)

The project is situated in one of the main development zones of Zürich behind the main railroad station and the central post office. Based on a masterplan by Kees Christiaanse, the real estate development branch of the Federal Railway company is developing a mixed use new urban neighborhood.

Baufeld E, the second lot to be planned, is meant to contain 60% office, restaurant and commercial use and 40% housing. The brief called for three different housing types, a high quality of urban living and flexible, generous office space.

Elevation north

Floor 06 - 11: apartments

Floor 01 - 05: offices

Ground floor: shops and restaurants

Long section

The proposal layers the functions horizontally resulting in deep floor slabs that are lit with internal courts and light wells. Since all the layers have different spatial and structural requirements a flexible hexagonal module has been adopted. Each hexagon is supported by three “ribbon columns” that can change orientation relative to the module and move from corner to corner. This allows for smooth adjustments between floors without expensive and inefficient transfer structure. In the front area of the building the ribbon columns run diagonally through the floors and together with vertical tension rods for a large truss supporting the cantilevered front of the building.

The three housing types are separated by roof gardens providing a variety of spaces, public and private, on the upper floors.

Office floor (visualization: Raumgleiter, Zürich)

View from apartement (visualization: Raumgleiter, Zürich)

Contact for more information:

HOSOYA SCHAEFER Architects
Markus Schaefer / Tanja Sussmann
Reinhardstrasse 19
8008 Zürich
Switzerland

T. +41 (0)43 243 6313
F. +41 (0)43 243 6315
office@hosoyaschaefer.com
www.hosoyaschaefer.com