First-class Magazines. Any first-class magazine for the storage of explosives shall not exceed one story, or 15 feet in height, and such magazine shall not have any basement or any mezzanine. Every first-class magazine shall be constructed of noncombustible materials and shall have exterior walls of solid brick masonry; provided, however, that walls may be constructed of good sheathing and wood studs with all space between the studs filled with dry sand for a thickness of not less than five and one-half inches and covered on the outside surface with noncombustible materials. There shall be no openings in any walls except a doorway which shall be provided with noncombustible materials. There shall be no openings in any walls except a doorway, which shall be provided with a noncombustible or metal-clad door.
Second-class Magazines. Any second-class magazine shall be constructed of noncombustible materials; provided, however, that the walls and roof may be of wood, metal-clad on the outside surface or covered with fire-retarding roof coverings.
(Prior code § 125-13)