On the southwestern outskirts of Munich, a modern laboratory and office building with a total of six floors and two basements is being built in the municipality of Gräfelfing. In areas above an interception, innovative Unidome void former technology was used to make the reinforced concrete slabs lighter, more efficient and more sustainable.
By integrating Unidome void former elements, the concrete slabs were reduced by around 75 tons of dead weight. This load reduction not only had a positive effect on the overall static design, but also enabled material-efficient construction with advantages for the foundation, structure and construction process. In addition, around 30 cubic meters of concrete were saved, which led to a CO₂ reduction of around 6 tons.
The void former modules used act as lost formwork within the concrete slab and displace concrete in areas subject to relatively low static stress. This principle ensures that the load-bearing capacity of the flat slab is fully maintained, while weight and resource consumption are significantly reduced. The project thus impressively shows how Unidome concrete shapers can also be used sensibly in parts of buildings and, in addition to the technical advantages, actively contribute to climate protection.
We would like to thank all project participants for their successful cooperation:
