5704.3.5.1 Storage of flammable and combustible liquids below grade.
FC § 5704.3.5.1
Flammable liquids shall not be allowed in basements, cellars or other areas below grade. Combustible liquids shall be allowed to be stored in basements, cellars or other areas below grade provided that such basement, cellar or other area below grade is protected throughout by a sprinkler system, and other fire protection is provided in accordance with FC Chapter 9 and the construction codes, including the Building Code. Exception: Class IIIB combustible liquids may be stored in basements, cellars and other areas below grade that are not protected throughout by a sprinkler system when stored in a room or other area that is segregated, vertically and horizontally, from surrounding spaces by a fire separation of not less than 2-hour fire-resistance rating and such room or other area is protected throughout by a sprinkler system.
