How many types of synthetic fiber line and wire rope slings are commonly used?

• A. 4
• B. 2
• C. 5
• D. 3

Answer: (D)

Slings used in crane work are categorized by the material they’re made from, and three materials dominate in common use: wire rope slings, synthetic fiber line slings, and chain slings. Wire rope slings are built from steel wire and excel for heavy-duty lifting, offering strength and durability but are heavier and can be harsher on surfaces. Synthetic fiber line slings are much lighter and easier to handle, providing cushioned contact with the load, but they’re more sensitive to heat, abrasion, and chemical exposure and require careful inspection. Chain slings are rugged, handle high temperatures well, and resist wear, though they’re heavier and less flexible in some rigging configurations. Because these three materials cover the main options used in routine lifting, there are three commonly used sling types.