Section R. 408.10635 - Travel distance to exitsRule 635.
(1) The total number of exits in a building shall be sufficient so that the maximum travel distance from any occupied space to at least 1 exit shall not exceed the limits specified in R 408.10636.(2) The distance to an exit shall be measured along the center line of the natural and unobstructed path of travel.(3) In case of an open area, the distance to an exit shall be measured from the most remote point subject to occupancy. In case of an individual room subject to occupancy by not more than 6 persons, distance to an exit shall be measured from the doors of such room if the path of travel from any point in the room to the door does not exceed 50 feet.(4) Where an open stairway is part of a path of travel to a required exit, the distance shall include the travel on the stairway, and the travel from the end of the stairway to reach an outside door or other exit, in addition to the distance to reach the stairway.(5) Where any part of an outside stair or other outside exit is within 15 feet horizontal distance of an unprotected building opening, the distance to an exit shall include the length of travel, to ground level, on the exit itself.(6) Exits and exit access shall be so arranged that there are no dead-end pockets or hallways whose depths exceed the limits specified for the individual occupancies in table 1.Mich. Admin. Code R. 408.10635