No person shall store or stock material or equipment in such a manner as to constitute a fire hazard. All storage of materials shall be arranged in height not to exceed the lower or bottom side of roof trusses and not closer than 18 inches below sprinkler heads. Lessees shall provide adequate aisles for passage of fire department personnel and equipment throughout the storage area. (Added by Res. adopted June 24, 1974; Amended by Ord. 84-109 § 1, Oct. 22, 1984).