NCCER Core Rigging Fundamentals & Material Handling 2

Question 1

Which type of sling provides the best resistance to damage from sharp edges and high temperatures?

Accepted Answer

Chain sling

Answer

Chain slings are the most resistant to heat and sharp edges because they are made of metal links that are not subject to cutting or melting like synthetic materials or wire rope.

Question 2

A wire rope sling should be removed from service if it has how many randomly distributed broken wires in one rope lay?

Accepted Answer

6 or more

Answer

ASME B30.9 standards require removing a wire rope sling from service if 6 or more broken wires are found in one rope lay length.

Question 3

What is the purpose of a spreader bar in a rigging operation?

Accepted Answer

To keep sling legs from squeezing inward and damaging the load

Answer

Spreader bars maintain the correct distance between sling attachment points, preventing the inward compression forces that could damage or crush the load.

Question 4

A synthetic web sling must be removed from service if it shows:

Accepted Answer

Acid or caustic burns

Answer

Acid or caustic burns compromise the structural integrity of synthetic fibers and require the sling to be immediately removed from service and destroyed.

Question 5

What is a 'basket hitch' in rigging?

Accepted Answer

A hitch where the sling is wrapped around a beam and both ends hook to the crane

Answer

A basket hitch passes the sling under the load with both ends attached to the lifting hook, supporting the load from below like a basket.

NCCER Core - National Center for Construction Education and Research Core Certification Practice Test

NCCER Core - National Center for Construction Education and Research Core Certification Practice Test

NCCER Core Rigging Fundamentals & Material Handling 2