The Gira production and office building in Radevormwald consists of two almost identical halls. The dimensions of each hall are 71.5 x 22.5 m in plan. Its interior is completely column-free due to the characteristic steel arch construction of the supporting structure on the first floor.

Steel Arch Construction for a Column-Free Storey

The supporting structure itself is composed of welded sheets. The two-hinged frame consists of flexurally rigidly connected frame stems and frame rails. These are hinged at the base points.

Werner Sobek was responsible for the structural engineering of the project.

Ingenhoven Architekten, Düsseldorf/Germany

Planning time
1999 − 2000

Construction time
2000 − 2001

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

Giersiepen, Anlagen-, Verwaltungs- und Vertriebs GmbH & Co. KG, Radevormwald/Germany

H.G. Esch, Hennef/Germany

German Steel Construction Award − Award 2004

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