For long loads, which below-the-hook lifting device is appropriate?

For long loads, which below-the-hook lifting device is appropriate?

• A. Spreader beam
• B. Grab hooks
• C. Manipulating lifter
• D. Electromagnet

Answer: (A)

For long loads you want a device that distributes the lift across the length so the load stays level and stable. A spreader beam does this by attaching the crane slings at multiple points along the load, keeping it parallel and reducing bending moments, sway, and the risk of end tipping or crushing the load at a single attachment point. The other devices aren’t ideal for long items: grab hooks work from a single point and can cause imbalance or damage along the length; a manipulating lifter is designed for positioning rather than maintaining a stable, level lift of long objects; and an electromagnet limits the load to magnetic materials and can be unreliable for keeping a long load steady during movement.

For long loads you want a device that distributes the lift across the length so the load stays level and stable. A spreader beam does this by attaching the crane slings at multiple points along the load, keeping it parallel and reducing bending moments, sway, and the risk of end tipping or crushing the load at a single attachment point. The other devices aren’t ideal for long items: grab hooks work from a single point and can cause imbalance or damage along the length; a manipulating lifter is designed for positioning rather than maintaining a stable, level lift of long objects; and an electromagnet limits the load to magnetic materials and can be unreliable for keeping a long load steady during movement.