Construction Exterior Stairs
1. Exterior staircase at the Swiss Federal Materials Testing Institute complex, Zurich. Architect: Werner Forrer, Zurich. Concrete substructure with treads and landing in precast concrete. 2. Staircase with cantilevered precast concrete steps at the Garden Show, Hamburg. Architects: Jean Challet, Pierre Mas, and Claudio Verdugo, Rabat. 3. Exterior staircase at the main building of the permanent scout camp in the Corte di Cadore holiday area. Architect: Eduardo Gellner, Cortina d'Ampezzo. Stair flights and landings in concrete.
