Bela Abolfathi, D. S. Aguado, Gabriela Aguilar, Carlos Allende Prieto, Andres Almeida, Tonima Tasnim Ananna, Friedrich Anders, Scott F. Anderson, Brett H. Andrews, Borja Anguiano, Alfonso Aragon-Salamanca, Maria Argudo-Fernandez, Eric Armengaud, Metin Ata, Eric Aubourg, Vladimir Avila-Reese, Carles Badenes, Stephen Bailey, Christophe Balland, Kathleen A. Barger, et al (328)
Stair Stringers (7) Stair stringers form the backbone of a set of stairs. By code, stairs need to be at least 36 wide. Although it's usually possible to get away with just using two stringers, we recommend you add a third one down the middle. This extra stringer will ensure your stairs are exceptionally rigid.
Tip. 1  Stringers may be installed based on the width of the stairs or closer together where the stair treads overhand the edges of the stringers 2 or more inches. 2  As an added measure, install 1 1/2-inch by 36-inch framing straps at the lower edge of each stringer and the inner face of of the rim joist.etermine the number of treads and risers on the stringers by measuring the rise of the stairs. Rise is the vertical distance from the surface an upper deck to the surface of a lower deck or from the surface of a deck to the ground.