Back to: Alternating Tread Stair Plans
1. The stair will be installed at a 70-degree angle or less. 2. The stair shall be capable of withstanding a minimum uniform load of 100 pounds per square foot with a design factor of 1.7 and the treads shall be capable of carrying a minimum concentrated load of 300 pounds at the center of any treadspan or exterior arc with a design factor of 1.7. Bellow is the wallpapers regarding alternating tread stairs & alternating tread stair plans which you can certainly download using the down load button below.