This elegant spiral staircase at the Joachim Herz Foundation in Hamburg impresses with its expressive design. Above all the parapet-high flat steel stringers on both sides and and the underside cladding made of steel are the inspiring elements. These features absolutely became to popular and modern trends and set new standards in architecture. The underside cladding is part of the structural construction. The self-supporting spiral stairs, manufactured according to DIN 18065, are finished by our experts with folded steel treads welded between the stringers. The construction was fixed by means of steel base plates at the unfinished floor.