R311.7.5 Stair treads and risers
Stair treads and risers shall meet the requirements of this [...]
Stair treads and risers shall meet the requirements of this [...]
The riser height shall be not more than 7¾⅓inches (196 [...]
Stair treads and risers shall meet the requirements of this [...]
The tread depth shall be not less than 10 inches [...]