Mich. Admin. Code R. 408.10671 - Fire escape stairs
Rule 671.
(1)
Fire escape stairs may be used as a required exit only in existing buildings.
Fire escape stairs shall not constitute more than 50% of the required exit
capacity. Fire escape stairs shall not constitute any part of the required
exits for a new building.
(2) Fire
escape stair dimensions shall be in accordance with table 4.
| TABLE 4 | |
| Minimum Width | 22 inches clear between rails |
| Minimum horizontal dimension of a landing or platform | 22 inches |
| Maximum rise | 9 inches |
| Minimum tread, exclusive of nosing | 9 inches |
| Spiral winders | Not permitted |
| Maximum height between landings | 12 feet |
(3) Fire escape stairs shall have walls or
approved guards, and handrails on both sides.
Notes
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