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712.1.10.2 Elevators.
Vertical openings for elevator hoistways in open and enclosed parking garages that serve only the parking garage, and complying with Sections 406.5 and 406.6, respectively, shall be permitted.
712.1.10.3 Duct systems.
Vertical openings for mechanical exhaust or supply duct systems in open or enclosed parking garages complying with Sections 406.5 and 406.6, respectively, shall be permitted to be unenclosed where such duct system is contained within and serves only the parking garage.
712.1.11 Mezzanine.
Vertical openings between a mezzanine complying with Section 505 and the floor below shall be permitted.
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