Why should sling angles be kept as small as feasible?

• A. Larger angles increase tension and risk.
• B. Smaller angles reduce tension in each leg and preserve lifting capacity.
• C. Angle does not affect lifting capacity.
• D. Very small angles are unsafe and should never be used.

Answer: (B)

The main idea here is that sling angle directly changes the tension each leg must carry. When two legs lift a single load, the vertical components of the tensions in both legs add up to the total weight. If the legs stay close to vertical (a small angle from vertical), each leg carries less tension—roughly half the load per leg—so the sling system can lift more safely within its rating. As you spread the legs wider (the angle from vertical increases), each leg must pull harder to provide the same vertical support, so the tension in each leg rises and the overall lifting capacity of the sling decreases. That’s why keeping the sling angle as small as feasible preserves lifting capacity and reduces the stress on the sling and hardware.

Very small angles aren’t inherently unsafe for the concept of load sharing; they simply have to be used with attention to stability and alignment, ensuring the load remains balanced and within equipment ratings.