Which term describes the maximum allowable load that a sling is designed to lift safely?

• A. Maximum breaking strength
• B. Rated capacity
• C. Tensile limit
• D. Yield strength

Answer: (B)

The safe lifting limit for a sling is its rated capacity. This value represents the maximum load the sling is designed to lift safely under standard conditions and includes a built-in safety factor to account for real-world factors like wear, damage, hitch configuration, and dynamic forces encountered during lifting.

Why this is best: rated capacity is specifically chosen to keep the sling within its safe structural and elastic limits during normal use. It is the practical, approved limit engineers and standards specify for safe operation.

The other terms describe material or failure properties rather than a ready-to-use safe load. Maximum breaking strength is how much load would cause the sling to rupture if pushed to destruction, which is far higher than what you should ever apply. Tensile limit and yield strength describe how the material behaves under stress (the point of permanent deformation or plastic flow), not a recommended lifting limit. In practice, you always use the rated capacity and adjust for factors like angle, number of legs, wear, and knots to maintain safety.