How Riser And Tread Lengths Affect Stringer Strength

http://www.homebuildingandrepairs.com/stairs/index.html Click on this link for more information about stair building, repairs and design. Remember, I'm not an engineer and only providing my personal opinions through my experience as a stair builder. Hopefully this helps, but keep in mind that there are other things that will determine which sizes of lumber to use for your stair stringers like, public stairs, over all width and height or rise and run, building occupants, emergency egress and other uses.