In this Grasshopper Script, you can use a curve or a polyline to generate a parametric stair and also control the heightof the steps and railings. Stair from Curve Inputs Base Curve : A curve to use as a refrence Inside/Outside : Boolean to determine wether the base curve is the interior or exterior curve Height : Overall Height of the Stairs Width : Stairs Width Step Height : Each Step's Height Outputs Stairs : The final stair slabs Railing : The railing of the stair Glass : Glass surface of the stair More info about this script 👇 ghscript.com/stair-from-curve/