Driveways and loading spaces extending into a building and complying with the requirements of an auxiliary use under the provisions of Section 13-56-250 shall be enclosed as follows:
Except in buildings of industrial or storage occupancy, the floors of such spaces and the floor construction separating such spaces from a floor above shall be of construction providing fire-resistance of not less than three hours. The walls of such spaces shall be of construction not less fire-resistant than required for the exterior walls of the building.
In buildings of industrial and storage occupancy, no enclosures shall be required, provided however, that the floor below such spaces shall be of construction providing fire resistance of not less than three hours.
(Prior code § 49-11)