"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.

This is the main reason why cutting stair stringers on site is optimal. An 11.5-inch stair run allows tandem 2×6 boards along the top of each stair, in lieu of a single 2×10 for a nine-and-a ...

Each tread is like a ladder's rung. This self-supporting nature becomes clear when you look at outdoor stairs that serve a deck, where the stringers are fully visible. Expert Tip ...