Library

Versions of Generic switchback stair, 16 treads, 8 ft rise

Published versions never change. A new license, new data or new geometry is always a new version; people who used an older one keep it.

Drawing	Version	Change	License	Status	Published
	Version 2	GeometryAdded two 8-tread flights, a landing slab, stringers and rails on both flights (plan and 3D).	CC0	Published	Nov 3, 2026
	Version 1	GeometryFirst version.	CC0	Published	Nov 3, 2026