What is the typical safety factor for web slings?

• A. 8
• B. 2
• C. 5
• D. 3

Answer: (C)

Web slings are designed with a five-to-one safety factor to provide a margin against unexpected loads, wear, and hitch effects. The safety factor is the ratio of the sling’s minimum breaking strength to its working load limit, so a five-to-one factor means the working load limit is one-fifth of the breaking strength. For example, if a sling’s minimum breaking strength is 5,000 pounds, its working load limit would be 1,000 pounds. This margin accounts for dynamic or shock loading, angle loading, abrasion, and potential damage, helping lifts stay safe even when conditions aren’t perfect. Smaller factors like 2 or 3 would offer too little protection against these real-world conditions, while a factor of 8 is not typically used for web slings.