size of typical staircase
The width of one stair, after all, will need to be consistent with the rest of the stairs. The stairâs width usually varies depending on the type of building the staircase is in, but for a normal residence, the standard tends to be 3 feet, 6 inches (106.7 cm).The minimum, in most places, is 2 feet 8 inches (81.3 cm).ise is the overall height of the entire staircase, from the lowest point to the highest point. Staircases vary in shape, but their rise is an important measurement for determining where landings are placed. Typically, a landing must be provided for every 12 feet (365.8 cm) of rise, as per fire safety codes.