R 408.10631 Construction, maintenance, and changes.

Rule 631. (1) The components of a means of egress including doors, stairs, ramps, passages, and signs shall be of substantial construction and shall be maintained in an operable condition. (2) An exit shall be not less than 28 inches (71.1 cm) wide at all points, except where specifically permitted elsewhere in this part. Where there is only 1 exit access leading to an exit or exit discharge, the width of the exit and exit discharge shall be at least equal to the width of the exit access. (3) The ceiling of an exit route shall be at least 7 feet 6 inches (2.3 m) high. Any projection from the ceiling shall not reach a point less than 6 feet 8 inches (2.0 m) from the floor. (4) The width of an exit route shall be sufficient to accommodate the maximum permitted occupant load of each floor served by the exit route. (5) Objects that project into the exit route shall not reduce the width of the exit route to less than the minimum width requirements for exit routes. (6) Exit routes must be kept free of explosive or highly flammable furnishings or other decorations. (7) A space formed with movable or folding partitions and occupied by more than 20 persons shall have an approved means of egress. (8) An alteration, addition, or change of occupancy that would reduce means of egress below the requirements for a new building is prohibited. (9) Furnishings and decorations of an explosive or highly flammable character shall not be used in any occupancy. (10) Where fire retardant paints or solutions are used, they shall be renewed, as necessary to maintain their fire retardant properties.