Rule 1874. Before initial use, all new, extensively repaired, and altered cranes shall be tested and inspected by or under the direction of a designated or authorized person and a written report which confirms the load rating of the crane shall be furnished by the person. The load rating shall not be more than 80% of the maximum load sustained during the test. Test loads shall not be more than 125% of the rated load, unless otherwise recommended by the manufacturer. The test reports shall be placed on file where readily available to appointed personnel.
Mich. Admin. Code R. 408.11874