ATP Lineworker Rigging Practices Exam 2026 – Complete Test Prep

Understanding how rigging hardware is rated comes down to following the manufacturer's labeling. Each piece is tested and tagged with its Working Load Limit or rated capacity for specific conditions, and that rating assumes certain factors like load type, hook orientation, and lift geometry. By checking the label, you confirm that the hardware is suitable for the exact load you’re lifting, the way the hook is oriented, and the arrangement of the rigging (angles, slings, and spread). A generic capacity chart from a hardware store doesn’t account for the specific product, its intended use in overhead lifting, dynamic loads, temperature, wear, or the exact configuration, so it can be dangerously misleading. Increasing the load by a fixed percentage or assuming capacity isn’t specified also isn’t reliable—these do not reflect the tested limits. Relying on the manufacturer’s labeling ensures the hardware is used within its tested and safe limits for the given lift.