5704.2.11.2 Location.
FC § 5704.2.11.2
Flammable and combustible liquid storage tanks located underground, either outdoors or under buildings, shall be in compliance with the following requirements: 1. Tanks shall be installed so that the external forces exerted from building foundations and support loads are not transmitted to the tanks. The distance from any part of a tank to the nearest wall of any basement, pit, cellar or any property line shall not be less than 3 feet (914 mm). Tanks shall not be placed less than 20 feet (6096 mm) from a subway wall.
2.Tanks shall be installed so that the highest point of the tank is not less than 2 feet (610 mm) below the level of the lowest cellar floor of any building within a radius of 10 feet (3048 mm) from the tank. No tank shall be located under a sidewalk or beyond the property line.
3.A minimum distance of 18 inches (458 mm), shell to shell, shall be maintained between underground tanks.
4.Manufacturer's installation instructions.













