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

Synthetic web sling

Answer

Wire rope sling

Answer

Round sling

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

2 or more

Answer

10 or more

Answer

15 or more

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

To increase the load's speed during lifting

Answer

To measure the distance between pick points

Answer

To attach multiple loads to a single hook

Question 4

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

Accepted Answer

Acid or caustic burns

Answer

Slight discoloration from UV exposure

Answer

Minor surface scuffing on the label

Answer

Stiffness from cold temperatures

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 single-leg vertical attachment to a load

Answer

A choker configuration with the sling wrapped around the load

Answer

A method of attaching multiple slings end-to-end

Question 6

What does 'D/d ratio' refer to in wire rope rigging?

Accepted Answer

The ratio of the sheave or pin diameter to the wire rope diameter

Answer

The diameter of the load compared to the distance of the lift

Answer

The derating factor divided by the design factor

Answer

The depth of the hook throat compared to the wire diameter

Question 7

Before a lift, rigging personnel should determine the load's center of gravity in order to:

Accepted Answer

Ensure the load will hang level and stable

Answer

Calculate the total rope length needed

Answer

Determine the correct shackle size

Answer

Decide how many workers are needed on the ground