Which configuration provides best contact between sling and load when rigging a bundle of pipe?

• A. Double wrap choker
• B. Single wrap choker
• C. Basket hitch
• D. Vertical choker

Answer: (A)

Maximizing contact area between the sling and the load is key for a bundle of pipe, because more contact length and surface distribute the bearing pressure and increase friction, reducing the chance of the sling slipping or the pipe edges being damaged. A double wrap choker wraps around the bundle twice, giving significantly more contact along the pipe surface and over a longer arc. That extra contact area helps hold the bundle tightly in place as you lift, so it’s less likely to shift or tighten unevenly and cause the sling to bite into the pipe. In contrast, a basket hitch cradles the load but doesn’t wrap around it enough to ensure consistent contact on all sides; a single wrap choker provides less contact length and higher pressure concentration; and a vertical choker offers minimal grip and more tendency for movement. So the double wrap choker is the best choice for achieving the strongest, most stable contact with a pipe bundle.