rBStair | Rivanoor Bren
Simple tool for extruding stair. Create flat stair from your plan, convert to poly, select start step and click <create stair>.
Most of stair scripts around are dependent of polygon number order. When you create stair from attaching multiple spline without orderly fashion you will get random polygon order in your editable poly object. This script will sort adjacent polys and save the number in an orderly array before extruding polygons.