Harbour Office

The SIGN! office building in Düsseldorf has a floor plan of approx. 51 x 20 m and a height of approx. 76 m (20 full storeys). Under the high-rise building is a four-storey underground car park (floor area approx. 5,341 m² GFA). Architect Helmut Jahn designed and realised the striking building from 2007 to 2010, Werner Sobek was responsible for the supporting structure and facade engineering.

Rounded Rectangle with Scale-Shaped Glass Facade

The ground plan of SIGN! has the shape of a rounded rectangle, which not only allows a high level of daylight to enter, but also takes away the solidity of the entire building. The external appearance is characterised by the 453-tonne, scale-shaped glass facade. It is also part of the elaborate energy concept.

JAHN Architekten, Chicago/USA

Planning time
2002 − 2008

Construction time
2007 − 2010

Services by Werner Sobek
Structural engineering (WP 1 − 6 acc. to § 64 HOAI)
Facade planning (WP 1 − 8 acc. to UBF)

19,940 m²

Frankonia Eurobau AG & Co. KG, Nettetal/Germany

Rainer Viertlböck,Gauting/Germany

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