A 90° Winding Staircase makes a 90° turn up towards the next level. The staircase allows the user to turn a corner and change their direction. The primary benefit of a 90° Winding Staircase over a flat landing straight staircase is that the 90° Winding Staircase saves much more space. The winders are the steps that are narrower on one side than the other, and when three steps are used to turn the 90° corner, the middle step is called the kite winder, as it looks like a kite-shaped quadrilateral.
For stairs serving a single user (typically private residential), a minimum of 36” (91 cm) is required. In general public spaces a minimum of 44” (112 cm) must be met—providing ample space for one person and allowing the tight passage of two people. Comfortable two person stair widths range between 49” (125 cm) to 60” (152 cm). For three simultaneous users, a minimum of 74” (188 cm) is recommended. Handrails must be placed every 60” (152 cm).
A 90° Winding Staircase makes a 90° turn up towards the next level. The staircase allows the user to turn a corner and change their direction. The primary benefit of a 90° Winding Staircase over a flat landing straight staircase is that the 90° Winding Staircase saves much more space. The winders are the steps that are narrower on one side than the other, and when three steps are used to turn the 90° corner, the middle step is called the kite winder, as it looks like a kite-shaped quadrilateral.
For stairs serving a single user (typically private residential), a minimum of 36” (91 cm) is required. In general public spaces a minimum of 44” (112 cm) must be met—providing ample space for one person and allowing the tight passage of two people. Comfortable two person stair widths range between 49” (125 cm) to 60” (152 cm). For three simultaneous users, a minimum of 74” (188 cm) is recommended. Handrails must be placed every 60” (152 cm).