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(a) Elevator Enclosures.
(1) Elevator shafts and dumbwaiter shafts shall be enclosed with walls or partitions providing fire resistance of not less than two hours, except that walls and partitions separating adjacent shafts shall provide fire resistance of not less than one hour.
(2) No more than four elevators shall be placed in one shaft enclosure.
(b) Escalator Enclosure. Escalators shall be enclosed with walls and partitions complying with the requirements for stairway enclosures as required in Section 15-8-140 with the following exception:
(1) Escalators not required as a means of exit shall not be required to be enclosed providing effective means are provided which will prevent the spread of fire or gases from one floor to another in the event of fire.
(Prior code § 62-3.3)