Side loading is a major cause of_____________.

• A. Boom Collapse
• B. Tipping
• C. Hydraulic failure
• D. Cable wear

Answer: (A)

Side loading places a sideways force on the crane and boom. The load charts assume the load acts along the crane’s centerline, so when the line of pull is offset, a bending moment is created that the boom isn’t designed to resist at that radius and angle. This extra stress can cause the boom to bend, fail at joints, or buckle, leading to a boom collapse. The other issues listed—hydraulic failures, cable wear, or tipping from stability problems—aren’t the direct result of a sideways load on the boom in the same way, and while they’re serious, side loading specifically undermines the boom’s structural integrity, making collapse the most likely severe consequence.