Which factors determine the choice of rigging method and equipment for a lift?

• A. Brand of crane and color.
• B. Only weather matters.
• C. Load weight and center of gravity, lift height and reach, attachment points, and required rigging angles.
• D. Operator preference.

Answer: (C)

Choosing how to rig a lift is all about how the load will behave during the lift. The key factors are the load weight and where the center of gravity is, the required lift height and reach, where you can attach lifting gear on the load, and the rigging angles you’ll encounter. The weight and CG determine how many legs the rigging should have, what kind of slings or spreaders are needed, and the overall capacity you must stay within. Lift height and reach affect how long the slings must be and how the load sits in relation to the crane, which can change the tension in each leg and the potential for side loading. Attachment points on the load dictate how to balance the lift—whether to use lifting eyes, lugs, or corners and whether spreaders are needed to maintain stability. Rigging angles directly impact the forces in each line; sharper angles increase tension and can push you toward exceeding sling or hook ratings, so they’re a critical part of ensuring a safe, controlled lift.

Other factors like the brand or color of the crane don’t influence the rigging choice, and while weather and site conditions affect planning, they don’t determine the fundamental rigging configuration. Operator preference isn’t the basis for selecting rigging methods; the decision is driven by load, geometry, and safety.