Depending on whether an open construction method is chosen for the step construction or the construction of folding steps, which is closed with a smooth-surfaced steel soffit cladding, the sculptural character can be influenced even further – especially in the case of spiral staircases. In addition, the property of including the steel soffit cladding in the structural analysis is also used. With the help of structural analysis programs that allow calculation with “finite elements”, this has an influence on the material thickness that must be used.
As a further design measure, recesses can be laser-cut into the steel parapet railing.
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