Stair by component tool is used to design stair in Autodesk Revit. To create a component-based stair, you work in a stair assembly edit mode to add common and custom sketched components. When you create a stair by components, you can modify the individual components of the stair, including the runs, landings, and supports. You can also make modifications to the entire stair, like changing the stair type, Number of Risers, Tread Width or changing the location. Video by CADCIM Technologies. To learn more visit https://www.cadcim.com/