The roof of steel and aluminium composite panels appears light and delicate. The curving free-form surface of the roof structure is bordered by 3D-curved circular hollow sections that are supported at nine points only and achieve a clear span of more than 20m over the entrance zone. Between these peripheral members, a triangular lattice of welded steel sections allows plenty of daylight to reach the interior. A golden flower made from an aluminium composite panel decorates every node. This principle is reversed at the edge, where isolated petals are punched out of solid surfaces.
Backed up by many years of experience in 3D design, seele was able to reproduce the artistic ideas of the architects exactly in a real structure, and was involved throughout, from development to design to erection on site. A wind tunnel simulation determined the loads for the structural system. Owing to the complex geometry of the roof structure, every triangle in the lattice is unique. That would have been the case for the 4,060 petals as well had seele not devised a system that enabled this huge number to be reduced to 50 different types.
Project images: © Torsten Seidel Photography