Building a set of stairs is a tricky endeavor. Using a pair of brass stair gauges and a builder’s square to mark the stringer (the zigzag boards the steps and risers attach to) can make the job a ...

Amateur carpenters who have laid out the cuts in a stair stringer (the zig-zag structural support for the steps) know the queasy feeling that bubbles up at the prospect of this job. There’s the simple ...

To lay out a set of stair stringers from scratch requires a little math, but not much. Equally important is some quiet time to run the numbers and at the same time to think about the construction ...

"You can absolutely cut a stair stringer if only you only knew the way the math works," my dad once said to me. So, long before I ever had a geometry class, I knew the math behind determining a slope.

Picture a stair slope in your mind to estimate about a 40-degree slope and guess at a landing point. Rest any straight piece of deck lumber on the deck and level it over to the landing point. Measure ...