Lenkwerk 1 - Curtain wall textile façade
CUSTOMER
Client: Hillebrandt GmbH
Client: Borchard Group from Bielefeld
Architectural office: Jonek + Dressler
PROJECT
CHALLENGES
The suspended textile façade of the Lenkwerk No. 1 building in Bielefeld was designed entirely with bocad by Hillebrandt GmbH. The façade of the six-storey office and commercial building consists of a steel substructure suspended from the building using tension and compression rods.
The position of the support points was digitally recorded by the surveyor on site and the XYZ coordinates were transferred to bocad as points to compensate for any tolerances.
The structural solution was developed in collaboration with the office of Gantert & Wiemeler in Münster. The design and geometry for the transparent fabric surfaces with the window cut-outs were created by the architects Jonek + Dressler from Bielefeld.
The challenges:
The planning and development task was that we only had an animation and the specifications for the geometry of the envelope from the architect. In collaboration with the structural engineer, Hillebrandt had to find a solution so that the fabric envelope could be attached to the precast concrete building in a free-floating manner and the edges and corners in the façade surface could be designed. Each façade surface has a different inclination, and the open window areas made it very difficult to design the supporting structure.
ADVANTAGES
The XYZ coordinates of the brackets were written from bocad to a CSV file and made available to a surveying office in order to mark the exact position of the brackets around the building and to determine possible tolerances between the target and actual values on the structure. This ensured that the structure, which was later suspended from the brackets using tension and compression rods, could be fitted accurately.
In this very complex construction with many different detail points, the exchange via IFC with a viewer was very helpful.