§ 2-50. Specifications for fuel storage tanks.

A. 

Tanks shall be constructed of galvanized steel, open hearth steel or wrought iron of a minimum gauge United States Standard depending on capacity as given below:

	Capacity (gallons)	Minimum Gauge
	1 to 560	12
	560 to 1,100	10
	1,100 to 4,000	7
	4,000 to 12,000	1/4

B. 

For tanks of 1,100 gallons or more a tolerance of 10% in capacity may be allowed.

C. 

All joints shall be riveted and caulked, brazed, welded or made tight by some equally satisfactory process. Tanks shall be made tight and sufficiently strong to bear without injury, the most severe strains to which they may be subjected in practice. Shells of tanks shall be properly reinforced where connections are made. All connections shall be made through the top of the tank above the liquid level, except in tanks having a capacity of 275 gallons and less, where one connection may be made, not larger than one inch opening iron pipe size in the bottom of the tank. Such tanks shall be inspected before being covered.

D. 

Underground tanks shall be thoroughly coated on the outside with asphaltum or other suitable rust-resisting material, dependent upon the condition of the soil in which they are placed.

E. 

Inside and aboveground tanks and auxiliary tanks shall be coated with a good quality rust-resisting paint.