The foundation for a farm milk tank shall be constructed with due consideration of frost penetration and shall be of sufficient strength to support the fully liquid-laden tank without change of level.

The distance between the top of the milk tank and the ceiling shall not be less than 36 inches. The minimum acceptable dimensions for a recessed ceiling are five feet by five feet, and the recessed area of the ceiling shall be positioned off center in such a manner that the maximum area is available for placing the test equipment. This subdivision shall apply only to farm milk tanks installed on or after March 1, 1979.