If you are studying from a standard Rigger 3 PDF (such as those from , NCCER , or OPITO ), you will find these specific technical sections: 1. Equipment & Inspection Criteria Rigger 3 Notes | PDF | Crane (Machine) | Rope - Scribd

Level 3 Riggers must be able to reject hardware based on specific rejection criteria, not just visual estimation.

Level 3 Riggers must calculate to ensure slings are not overloaded. As the angle between the sling and the horizontal decreases, the tension on the sling increases dramatically.