ASME B30.9 design factor applies to which of the following sling types?

• A. Synthetic Web
• B. Synthetic Rope
• C. Synthetic Round
• D. All of the above

Answer: (D)

The main idea is that a design factor provides a safety margin to determine the working load limit from a sling’s breaking strength, and this margin is applied across all slings covered by ASME B30.9. ASME B30.9 includes synthetic web slings, synthetic rope slings, and synthetic round slings, and for each type the working load limit is derived by dividing the sling’s minimum breaking strength by the specified design factor. Because this safety factor concept applies to all the sling types listed, the design factor is relevant to each one. That’s why all of the above is the correct choice. For example, with a given minimum breaking strength, applying the design factor yields the WLL for web, rope, or round slings in the same way, ensuring consistent safety across sling types. Always refer to the specific design factor and WLL charts in ASME B30.9 for the exact values per sling type and size.