Rotation per Step — Underfoot element
Category: Underfoot element
Turning angle of each individual step in spiral stairs.
In spiral stairs, the rotation per step describes the angle by which each individual step turns around the central column. A larger rotation angle results in a more comfortable going at the walking line, while a smaller rotation angle requires less floor space.
Related terms
Related terms: Spiral Stair, Winding, Walking Line, Winder Tread, Tread Depth (Going), Stair Formula.