What does 'birdcaging' indicate in wire rope and what action should be taken?

• A. Birdcaging shows strands spreading and separating under tension; remove from service and replace
• B. It indicates the rope is flexible and good
• C. It's normal for wire rope under load
• D. It indicates the rope is ready for use

Answer: (A)

Birdcaging is a dangerous wire rope defect where the strands spread apart and separate, giving a cage-like appearance when the rope is loaded. This signals significant internal damage and loss of strength, usually from overload, shock loading, or severe bending. Because the rope’s integrity is compromised, it must be removed from service and replaced. It isn’t a sign of good condition or normal behavior under load, and it should not be repaired or reused. After removal, inspect other lengths for similar damage and review loading practices to prevent recurrence.