ETH Zurich team builds ultra-thin curved concrete roof

Researchers at ETH Zurich have built an ultra-thin, prototype concrete roof using innovative design and fabrication methods.(Credit: Block Research Group, ETH Zürich/Naida Iljazovic)
The test structure, which has already been dismantled, was 7.5m high with a surface area of 160m². It was built using a framework net of steel cables covered in a polymer textile. The concrete had an average thickness of 5cm varying between 3cm along the edges of the roof to 12cm at the support surfaces.
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