Which of the following is NOT one of the four factors that determine safe sling use?

• A. Size
• B. Hitch
• C. Angle
• D. Material

Answer: (D)

Safe sling use is governed by three practical considerations: size, hitch, and angle. The size of the sling determines its capacity and whether it will fit around the load without slipping or becoming overstretched. The hitch describes how the sling is wrapped or attached to the load and to the lifting device, affecting how the load’s weight is shared among the sling legs. The angle between the sling legs and the load changes the force each leg must bear; as the angle opens, the required capacity increases and the risk of failure rises. Material matters for durability and compatibility with the environment, but it’s not one of the primary factors used to determine a safe sling setup in this context.