What is the safety factor for synthetic slings?

• A. 3 to 1
• B. 5 to 1
• C. 7 to 1
• D. 10 to 1

Answer: (B)

When evaluating lifting gear, the safety factor shows how much stronger the sling is than the load you intend to lift. For synthetic slings, the standard is five to one. This means the sling’s minimum breaking strength is at least five times its working load limit, providing a margin to absorb dynamic forces, shock loading, misalignment, wear, heat, and abrasion. For example, if a synthetic sling has a working load limit of 2,000 pounds, its breaking strength should be at least 10,000 pounds. This margin helps prevent failure under real-world conditions where loads aren’t perfectly steady. Other factors like 3:1, 7:1, or 10:1 aren’t the typical standards for synthetic slings in OECP practice, as five-to-one is the established guideline.