Deck stairs look simple until you cut your first stringer wrong. I have done that, and one bad cut can waste a whole board. Building deck stairs is one of the most useful DIY projects you can take on.

This project shows how to build exterior deck stairs from start to finish, including measuring total rise, using a stair calculator, pouring a concrete landing, cutting stringers, waterproofing ...

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 ...