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(c) The rated load test must be performed 1  -. (1) When the crane is installed; ( 2 2) Each 60 months; and. ( 3 3) After repairs or alterations to any structural component of the crane.
To a large extent much of the testing happens during the design and build of the structure. Basically you design the crane for the maximum load and operational cycles. Then you select an appropriate steel - normally S355 or S690 (which has a higher yield strength which reduces weight and thus operating cost). You then fabricate the structure paying particular attention to the welding.