The Deck Store Online's Handy Stair Calculator is the easy way to figure out how many steps and how much material you will need. The total design height of your project measured in inches. inches R Treads The actual tread depth can be longer than the run. See Nosing Rule.
Use 3-in. deck screws to fasten the skirts and treads to the stringers and the skirts to the deck. Fasten the risers to the stringers with 8d galvanized nails. For extra-strong stairs, reinforce the middle 2×10 stringer with 2x4s nailed to both sides Photo 7 .
Stair tread dimensions, measaurements and step construction details and code specifications: This document provides building code specifications for stair treads: sketches, photographs, and examples of defects used in inspecting the step design on indoor or outdoor stairs and their treads, including the requirements for a projecting stair tread nose and the tread nose shape and dimensions.
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