The Federal Chancellery in Berlin
As the centrepiece of the master plan for the Spreebogen in Berlin, designed by the architects Axel Schultes and Charlotte Frank in 1993, Wayss & Freytag built the Bundeskanzleramt (Federal Chancellery) in a joint venture between 1995 and 2001. The extravagant architecture required high quality exposed concrete structures and extraordinary formwork for shell-like floors and for the reinforced concrete supports which had a potato-like bent cross-section. The inner walls, which were up to 18 m high, required complex prestressing with fixed couplers in each floor slab.
Energy is generated by means of a photovoltaics system. The in-house cogeneration unit is run on vegetable oil and the winter gardens, which are situated in front of the office spaces, offer optimum thermal use, since they have the effect of thermal buffer zones.
The entire complex consisting of Federal Chancellery, two adjacent administrative wings as well as the chancellery park and garden connects the Eastern and Western parts of Berlin at the former line of demarcation.
Further details:
- 73,000 m² plot area incl. park
- 12,000 m² area covered by buildings
- 58,000 m³ concrete
- 11,000 t reinforcing steel