§ 1501.15 STORAGE OF READILY COMBUSTIBLE MATERIALS.
   (a)   Generally. No person shall keep or permit to be kept on any premises owned or occupied by him or her any oily waste and oily rags, unless at all times, when not actually in use, such oily waste and oily rags be kept in a metal can with self-closing cover and riveted joints.
   (b)   When permit required. No person shall store in any building or upon any premises in excess of 2,500 cubic feet gross volume of combustible empty packing cases, boxes, barrels, or similar containers, or rubber tires, or baled cotton, rubber, or cork, or other similarly combustible material without a written permit from the city.
   (c)   Storage requirements.
      (1)   Aisles with a minimum width of 24 inches shall be provided every 15 feet for indoor storage; they shall not be dead end, and they shall line up with exits where possible.
      (2)   The storage of readily combustible items shall not be stored within a closet or room housing an open flame heater, or open flame water heater, unless the materials are contained in a metal riveted joint container with tight-fitting lid.
      (3)   No flammable liquids or equipment and machinery containing flammable liquids shall be stored in any path of egress including aisles, stairways, hallways, and vestibules.
      (4)   Storage in buildings shall be orderly, shall not be within two feet of the ceiling, shall be separated from heaters or heating devices by distance or shielding so that ignition cannot occur, and not so located regarding endanger exit from the building. Storage in the open shall not be more than 20 feet in height, shall be so located, with respect to adjacent buildings, as not to constitute a hazard, and shall be compact and orderly.