What are lengths of pipe or round steel stock placed under a load to provide a lower-friction surface called?

What are lengths of pipe or round steel stock placed under a load to provide a lower-friction surface called?

• A. Pallet Jack
• B. Cribbing
• C. Rollers
• D. Forklift

Answer: (C)

Using cylindrical stock under a load creates a rolling surface that lowers friction, letting the load move more easily. Lengths of pipe or round steel stock act as rollers, turning sliding contact into rolling contact and spreading the effort needed to move the object. This technique is common when you need to slide heavy objects short distances without lifting them off the ground. Other items listed have different roles: a pallet jack is a lifting and pulling tool for pallets, cribbing provides support and stabilization, and a forklift is a vehicle for lifting and transporting loads. They don’t provide the low-friction rolling surface that rollers do.

Using cylindrical stock under a load creates a rolling surface that lowers friction, letting the load move more easily. Lengths of pipe or round steel stock act as rollers, turning sliding contact into rolling contact and spreading the effort needed to move the object. This technique is common when you need to slide heavy objects short distances without lifting them off the ground. Other items listed have different roles: a pallet jack is a lifting and pulling tool for pallets, cribbing provides support and stabilization, and a forklift is a vehicle for lifting and transporting loads. They don’t provide the low-friction rolling surface that rollers do.