Why should sling load calculations consider asymmetrical loading?

• A. To ensure individual legs are not overloaded
• B. To speed up the lift
• C. To minimize equipment costs
• D. To simplify rigging

Answer: (A)

When rigging with more than one sling leg, the load is shared according to the geometry of the rigging and where the load sits relative to the lift points. If the load is off-center or the legs aren’t equal, the forces in each leg become unequal. Ignoring this asymmetry can lead to one leg carrying far more than its capacity, risking sling failure or a dropped load. By accounting for asymmetrical loading in sling load calculations, you identify the force on the most stressed leg and ensure the chosen slings and connections have enough capacity, and you can adjust rigging (such as using spreaders or repositioning the load) to balance the load. This safety-focused approach is essential, whereas speeding up the lift, cutting costs, or oversimplifying rigging do not ensure safe load distribution.