code requirements for stair tread finish
International Building Code for Stair treads and risers. 1009.3 Stair treads and risers. Stair riser heights shall be 7 inches (178 mm) maximum and 4 inches (102. mm) minimum. Stair tread depths shall be 11 inches (279 mm) minimum. The riser height shall be. measured vertically between the leading edges of adjacent treads.