Stairs
1. Stairs and retaining wall at a residential building in Zurich. Architect: Balz König, Zurich. 2. Garden stairs at the residential building of architect: E. Neuenschwander, Zurich. On the left, the wall of the higher garden area leads to a continuous step; on the right, steps half as wide lead to the lower garden area. 3. Concrete stairs at the Zurich Zoo monkey house. Treads are inserted into the spring steps at approximately half their width. Architects: Haefeli, Moser and Steiger, Zurich. 4. Connecting stairs and retaining wall between garden and house levels at a residential building in Vienna. Architect: Dr. Franz Sturm.
