Chain slings use a minimum safety factor of ?.

Chain slings use a minimum safety factor of ?.

• A. 5
• B. 4
• C. 7
• D. 10

Answer: (B)

The main idea here is how safety factors relate to lifting gear. A chain sling is rated with a safety factor of 4:1, meaning the working load limit (WLL) is one-quarter of the chain’s breaking strength. This 4:1 margin accounts for potential dynamic forces, shock loads, wear, bending of links, and misalignment that can reduce strength in real use. So, if a chain sling has a breaking strength of, say, 40,000 pounds, its WLL would be 10,000 pounds. This 4:1 standard is typical for chain slings, whereas other materials (like wire rope) may use different factors.

The main idea here is how safety factors relate to lifting gear. A chain sling is rated with a safety factor of 4:1, meaning the working load limit (WLL) is one-quarter of the chain’s breaking strength. This 4:1 margin accounts for potential dynamic forces, shock loads, wear, bending of links, and misalignment that can reduce strength in real use. So, if a chain sling has a breaking strength of, say, 40,000 pounds, its WLL would be 10,000 pounds. This 4:1 standard is typical for chain slings, whereas other materials (like wire rope) may use different factors.