Mich. Admin. Code R. 400.4640 - Stairs
Rule 640.
(1) In
new and converted facilities, stairs shall have treads of uniform width and
risers of uniform heights. In converted facilities, treads shall be not less
than 9 1/2 inches deep, exclusive of nosing, and risers shall be not more than
7 - inches in height. In newly constructed facilities, treads shall be not less
than 11 inches deep, exclusive of nosing, and risers shall be not more than 7
inches in height.
(2) Stairs in an
existing facility approved before these rules take effect shall continue to be
approved until the portion of the building encompassing the stairs is
remodeled.
Notes
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