When rigging a bundle of pipe or tubing, which configuration provides the best contact between sling and load?

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

Answer: (A)

Maximize contact and friction between the sling and the load to prevent slipping when lifting a bundle of pipes or tubing. The double wrap choker wraps the sling around the bundle twice, creating a broader contact band that bites more securely into the surface. This distributes the lifting pressure more evenly, reduces the chance of the load slipping, and minimizes damage to the pipes from concentrated pressure or edges.

A single wrap choker has less contact area and can tighten to a smaller circumference, increasing slip risk. A basket hitch cradles the load but doesn’t provide as uniform a contact around the circumference. A vertical lift relies on a single point of support, offering little grip and a higher potential for slip or load movement.