In spiral staircases with an "intermediate" outer diameter, the central tubular structure is particularly bulky and aesthetically pleasing. MaBo's technicians have managed to calculate the correct balance between the diameter and thickness of the central tubular structure, thus managing to use only the portion strictly necessary to anchor the other elements of the staircase without compromising its structural characteristics. This intervention makes the helicoidal structure the real protagonist of the staircase itself, visually lighter and aesthetically interesting.
