Can you connect two floors by stealing little space to the house? When you need to insert a small but functional scale it is easy to think of a rounded spiral staircase. In fact, it is preferable to design a square or rectangular hole since the space in the corners remains more exploitable and the passage is so much easier. The minimum footprint is 1.20 m for 1.20 mt. Of course, for greater convenience, it is necessary to increase the size of the compartment. As an alternative to a square or rectangular square spiral staircase, it is possible to realize a small U-type staircase. The latter differs from the spiral staircase in the rotation development, so it is not necessary to make a full turn to reach the plane Superior.
Spiral staircases can be made round, square or rectangular bottomed. This solution allows the best use of small space, minimizing the use of the horizontal space and making maximum use of the vertical space. In the case that the walls are out of square the steps will still be flush with the wall.
What is the minimum size of a spiral staircase? Is it better to design it with a round or square base?