Rule 629.
Treads shall be not less than 9 1/2 inches deep, exclusive of nosing, and risers shall be not more than 7 3/4 inches in height.
Mich. Admin. Code R. 400.10629
Rule 629.
Treads shall be not less than 9 1/2 inches deep, exclusive of nosing, and risers shall be not more than 7 3/4 inches in height.
Mich. Admin. Code R. 400.10629