Unoccupied tenant spaces in covered and open mall buildings shall be:
- Kept free from the storage of any materials.
- Separated from the remainder of the building by partitions of not less than 0.5-inch-thick (12.7 mm) gypsum board or an approved equivalent to the underside of the ceiling of the adjoining tenant spaces.
- Without doors or other access openings other than one door that shall be kept key locked in the closed position except during that time when opened for inspection.
- Kept free from combustible waste and be broomswept clean.