Here's the essential tools for laying out
stair stringers. You're going to need a framing square and if possible,
some stair gauges. Stair gauges make your job easier and could prevent
mistakes, while laying out the stair stringers.
Make sure that you choose the straightest piece of lumber for your stair
stringer pattern. If possible, select a board with as few knots as
Split Level Stair Framing