Tank supports shall be installed on firm foundations. Tank supports must be of concrete, masonry, or protected steel. Single wood timber supports (not cribbing) may be used for outside aboveground tanks if the fall potential of the tank is not more than 12 inches at the lowest point of the tank.
Minn. R. agency 151, ch. 5207, OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR CONSTRUCTION; GENERAL, pt. 5207.0060
Statutory Authority: MS s 182.655