What condition is described by eccentric reeving causing the boom to side load, twisting the boom and wearing rope?

• A. Eccentric reeving causing side loading
• B. Proper reeving with no side loading
• C. Overloading the hoist
• D. Using a damaged rope

Answer: (A)

When the rope path is off-center, the load doesn’t travel straight along the crane’s vertical axis. This eccentric reeving introduces a horizontal component to the hoist force, pushing the boom to one side. That sideways push creates a bending moment and can twist the boom, while the rope moves through the sheaves and drum at an angle, accelerating wear on the rope where it rubs or threads abnormally. So the condition described—side loading of the boom with twisting and increased rope wear—fits precisely with eccentric reeving. If reeving were proper and centered, there would be no sideways force; overloading changes the vertical load but not the sideways path, and using a damaged rope describes rope integrity issues rather than the misalignment of the rope path.