 | American Oil Burner Association - Heating - 1928 - 396 pages
...shall be buried underground with top of tank not less than two feet below the surface of the ground and below the level of any piping to which the tank may be connected, except in lieu of the two feet covered, tank may be buried under twelve inches of earth and a slab... | |
 | Agriculture - 1933 - 808 pages
...of an underground tank should not be less than 2 feet below the surface of the ground, and should be below the level of any piping to which the tank may be connected. Instead of being buried 2 feet underground, the tank may be buried under 12 inches of earth, and a... | |
 | Fuel - 1924 - 686 pages
...or reinforced concrete but the use of the latter is restricted to the storage of oils under 36 deg. B. The rules require the tank to be buried so that...rupture of the tank itself is reduced to a minimum. In many cases local conditions: are such as to necessitate placing the storage inside the building.... | |
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... and five mixture. All tanks shall be buried under ground with the tops of the tanks at least two (2) feet below the immediate surrounding surface and below the level of any piping to which the tank may be connected. In lieu of the two (2) feet covering,... 