The design of the staircase was created in cooperation with „Aulík Fišer architects“ for the Bořislavka centrum building.

The staircase is a spiral, with a circular floorplan and is designed for the open space of the conservatory, running through 3 floors, 2 of which are connected by walkways.

Its uniqueness lies in the size, weight and completely atypical design of the rounded support glass, which forms both the handrail and the support structure for the individual steps, as well as the reinforcing element for the steel structure encompassing the entire space.

The staircase is 4 metres wide in diameter, weighs over 22 tonnes as a whole and is over 12 metres high.

• Steel part of the staircase
  The entire staircase is built on a load-bearing steel crossbar on the lower floor, which supports the entire staircase spindle. This achieves the unique effect of being able to see through all floors of the staircase via the glass floor, which sits in the supporting crossbar
  
  The spindle was completely pre-assembled at our factory and then transported by heavy lifting equipment directly to the construction site. The steel cross and spindle were moved into the initial structure by crane, through the roof of the building.
• Surface treatment of the structure
  The surface finish of the entire staircase was executed in first-class Italian San Marco paint, which is among the absolute best in the industry. The entire surface of the steel structure and steps was sprayed on site after installation. This method of surface treatment required, among other things, the establishment of a painting station on scaffolding directly in the interior of the building.
• Glass part of the staircase
  The glass part of the staircase was very demanding in terms of both design and implementation. The glass here forms the load-bearing part of the staircase and the support of the steps. There were a total of 5 pieces of glass and all of them were made as three-layer, hot curved, safety glass in a 3 x 10 mm composition. The installation of the glass was again carried out by high-rise cranes through the open skylight. The glass has a total of 97 holes for anchoring in the central ring and for attaching the individual steps. The geometry of the curved glass with drilled holes for anchoring must be 100% described before production and must correspond to the actual condition of the implemented connecting steel structure. Therefore, a detailed 3D scan of the actual condition of the entire steel spindle was carried out, together with the steps, as is common practice in the Czech Republic, to avoid the slightest deviations between the glass and the connecting steel structure. The production of this type of glass is then carried out exclusively by our partners in Germany.The dimensions of our designed, statically assessed and implemented arched glass nowadays equal or even exceed the European technological parameters.

The installation of the entire staircase, including production, planning and design, took about 1.5 years. Such technological gems cannot be rushed.

This staircase is clearly unique, especially in terms of production technology, its installation and design. It is clearly the pride and joy of the whole building.