The metal used in all tanks shall be of a minimum gauge, U.S. standard, depending upon the capacity or size as given in the following table:
Capacity | Thickness |
(Gallons) | of material |
1 to 500 | 14 gauge |
501 to 1100 | 12 gauge |
1101 to 4000 | 7 gauge |
4001 to 10500 | 1/4 inch |
10501 to 20000 | 5/16 inch |
20001 to 30000 | 3/8 inch |
MCL 125.569