GRAFT proposed a dramatic roof struc­ture that rests on the ground at just two points and provides shelter from rain, snow and sunlight but also frames a view of the moun­tains beyond and the sky above. The poise and elegance of the roof responds to the land­scape.

Deve­loped in colla­bo­ra­tion with schlaich berger­mann partner, the steel ring struc­ture is spanned by a steel rope net covered with PTFE membrane. The roof area totals 2,700 square metres.

These included the plan­ning of the complex geome­tric shape, the static calcu­la­tion of the work­shop shape and the cable lengths, the shaping of the up to 55 mm thick panels of the edge girder and the extra-long and extra-wide special trans­ports to the cons­truc­tion site in the middle of Germany’s highest low moun­tain range. There, the compon­ents weig­hing up to 50 tons were assem­bled and welded toge­ther at a height of up to 16 metres, while 60 cables and 660 cable junc­tions were installed and pre-tensioned.

The company Zeman from Vienna was commis­sioned.