90° Winding Stairs

Set of dimensioned drawings of 90° Winding Stairs with measurements for height and width

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. 


*Under Development*


Winding Steps:
Narrow End (Min.): 6” | 15 cm
Tread Run (Min.): Must meet required tread dimensions 12” | 30.5 cm inward from narrow end

Width (Min.): 36” | 91.4 cm
Rise (Max.): 7” | 18 cm
Run (Min.): 11” | 28 cm
Landing (Min.): 36” | 91.4 cm
Handrail Height: 34”-38” | 86.5-96.5 cm



Drawings include:
90° Winding Stairs side elevation, side (person), front, plan

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Stairs, stairways, staircases, or stairwells, are building components that provide users with a means of vertical movement with the distribution of separate and individual vertical steps. In buildings, a flight of stairs refers to a complete series of steps that connects between two distinct floors.

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