Have you ever wondered what the average width of residential stair tread was?
The general rule for standard stair dimensions that is accepted by many general contractors and stair designers is known as the “7-11” rule. This means the rise is 7 inches and the run is 11 inches. This rule can be applied to any staircase design, it’s 11 inches and that would consist of a 10-inch run in the individual stairway and a 1-inch overhang or 1-inch undercut. 11 inches provide most users with a comfortable step.