Multi-storey staircase diameter 300, high fashion shop in Milan
Spiral circular staircase helical form self-supporting, precast, no central column, external diameter of cm ...... and total height cm ..... produced by Rizzi sas in Marano Vicentino, patent n. 507749, formed by individual elements (steps) assembled in succession including the tread, the riser and at the two ends the beam trunk that forms, when assembled, two helical beams, in which grooves will be inserted the armor that connects the starting floor to the arrival floor.
Railings: painted steel or stainless steel satin.