Wedge Tread

By Huu Khanh Nguyen · Updated October 28, 2026 · stair, tread

A tapered step for a winding or spiral stair, cut as a ring sector with a rounded front edge.

Parameters

Name	Default	Unit
Inner Radius (turn axis to the narrow end)	50	mm
Outer Radius (turn axis to the wide end)	600	mm
Turn Angle Of One Step	30	°
Thickness	40	mm
Front Edge Radius	6	mm
Finish	white