Mich. Admin. Code R. 400.4638 - Means of egress

Rule 638.

(1) Means of egress shall be considered the entire way and method of passage to free and safe ground outside a facility. All required means of egress shall be maintained in unobstructed, easily traveled condition at all times.
(2) There shall be not less than 2 means of egress from the street floor story. At least 1 of the 2 means of egress shall be through a side-hinged door. The door shall be a minimum of 30 inches wide, except as provided in R 400.4639. The second means of egress may be a sliding glass door.
(3) A second story shall only be used by ambulatory residents and shall comply with 1 of the following requirements:
(a) Two open stairways separated by not less than 50% of the longest dimension of the story.
(b) One open interior stairway and 1 exterior stairway or fire escape separated by not less than 50% of the longest dimension of the story. An exterior stairway or fire escape does not require protection from fire in the building. An exterior stairway or fire escape shall be constructed of not less than 2-inch nominal lumber and be in good repair.
(c) One interior stairway and all floors separated by materials which afford at least a 3/4-hour fire resistance rating. The doors separating floors shall be at least 1 3/4-inch solid wood core and shall be equipped with positive latching hardware and approved self-closing devices. Each sleeping room on the second story shall have a window of not less than 5 square feet with no dimension less than 22 inches to allow for emergency rescue.
(4) A basement used by residents requires 1 means of egress which may be a stairway. The stairway may be an open stairway, except as required by subrule (3)(c) of this rule.

Notes

Mich. Admin. Code R. 400.4638
1983 AACS; 2015 MR 9, Eff. June 8, 2015

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