Building Stairs
A common deck stairway is made from two 2 ? 12 stringers, and a series of 2 ? 6 treads attached with metal cleats. Posts set 18? back from the end of the stairway help to anchor the stringers and the railings. Calculations needed to build stairs include the number of steps, the rise of each step, the run of each step, and the stairway span.
