Calculation of the main staircase in the City Museum in Den Bosch (the Netherlands).
The stairway cantilevers 5m from the floors. The ceilings are twice 5.5meters, so 11 meters total height. There is not a single column present. The stairway is only fixed at the bottem and top side to the floors. The structure, completely decorated and finished, weighs on its own already 19 tons, and is designed for an additional variable load of 500 kg/m².