# Basics Of Rigging Trivia Exam: Quiz!

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Do you know about the basics of rigging? Rigging is the action of creating and installing the equipment so that you can move certain items. A team of riggers design and establish the lifting or rolling of equipment required to raise, roll, slide, or lift objects such as a crane or block and tackle. This quiz will show you what you know about rigging. Don’t forget to acquire your certificate upon completion of the quiz.

• 1.

### If the rigging on your hook is 1/2 in. off-center. approx what percentage of the load can it carry?

• A.

75%

• B.

80%

• C.

85%

• D.

90%

B. 80%
Explanation
If the rigging on the hook is 1/2 inch off-center, it means that the load is not evenly distributed. This imbalance can reduce the load-carrying capacity of the hook. The correct answer of 80% suggests that the hook can still carry 80% of its maximum load despite the off-center rigging. This means that the rigging imbalance has a moderate impact on the load-carrying capacity, reducing it by 20%.

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• 2.

### If you are picking a unit of 16ea. (12"x12"x10') long timbers which are made out of oak, How heavy is the load?

• A.

"Approx..5,000lb."

• B.

"Approx..10,000lb."

• C.

"Approx..15,000lb."

• D.

"Approx..20,000lb."

B. "Approx..10,000lb."
Explanation
The correct answer is "Approx..10,000lb." because each timber weighs approximately 625lb (10,000lb divided by 16).

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• 3.

### When using a 2 part bridle with a sling angle of 45degrees, what size rigging would be needed to lift a load of 31,000 pounds?

• A.

1 1/8

• B.

1 1/4

• C.

1 3/4

• D.

2-Jan

B. 1 1/4
Explanation
When using a 2 part bridle with a sling angle of 45 degrees, the size of the rigging needed to lift a load of 31,000 pounds is 1 1/4. The sling angle affects the capacity of the rigging, and a 45-degree angle reduces the capacity by approximately 30%. Therefore, the rigging size needs to be larger to compensate for the reduced capacity and ensure the safe lifting of the load. In this case, 1 1/4 is the appropriate size to handle the 31,000-pound load with a 45-degree sling angle.

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• 4.

### What should you do if you notice a wire rope has evidence of heat damage?

• A.

Cool it down with water

• B.

Ignore it

• C.

"tell your superviser, but keep in use"

• D.

Take out of survice immediately

D. Take out of survice immediately
Explanation
If a wire rope shows evidence of heat damage, it is crucial to take it out of service immediately. Heat damage can weaken the wire rope, making it unsafe to use. Continuing to use the damaged wire rope can lead to catastrophic failure, causing accidents and injuries. Therefore, it is essential to remove the wire rope from service to prevent any potential hazards.

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• 5.

### Does Kiewit's policy allow for chains to be used for general rigging?

• A.

No

• B.

Yes

A. No
Explanation
Kiewit's policy does not allow for chains to be used for general rigging.

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• 6.

### Before using a spreader bar you must have the following items. (check all that apply)

• A.

A capacity stamped on the spreader bar

• B.

A design drawing showing correct configuration

• C.

A photo of the spreader bar in the district office

• D.

A. A capacity stamped on the spreader bar
B. A design drawing showing correct configuration
Explanation
The correct answer is a capacity stamped on the spreader bar and a design drawing showing correct configuration. These items are necessary before using a spreader bar to ensure that it is safe and suitable for the intended lifting operation. The capacity stamped on the spreader bar indicates the maximum weight it can safely handle, while the design drawing shows the correct configuration to ensure proper usage. Both of these items are crucial for ensuring the safety and effectiveness of the spreader bar during lifting operations.

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• 7.

### When would you take a wire rope out of service?

• A.

3 broken wires in one strand of a lay

• B.

6 broken wires in one entire lay

• C.

Kinking birdcaging or distortion of wire rope

• D.

All of the above

D. All of the above
Explanation
The given answer, "All of the above," is correct because any of the mentioned conditions can indicate a wire rope that needs to be taken out of service. If there are 3 broken wires in one strand of a lay, it indicates potential weakness and compromise of the rope's strength. Similarly, if there are 6 broken wires in one entire lay, it further highlights the deterioration of the rope. Kinking, birdcaging, or distortion of the wire rope can also lead to reduced strength and reliability. Therefore, any of these conditions warrant removing the wire rope from service to ensure safety.

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• 8.

### Which is part of the Basic Guidelines?

• A.

Never exceed the W.L.L.

• B.

Always use a tag line

• C.

• D.

All of the above

D. All of the above
Explanation
The Basic Guidelines include never exceeding the W.L.L. (Working Load Limit), always using a tag line, and never getting under the load. These guidelines are important for ensuring safety and preventing accidents when working with heavy loads. By following these guidelines, workers can minimize the risk of overloading equipment, maintain control of the load, and avoid being in a dangerous position underneath the load. Therefore, the correct answer is "all of the above" as all three statements are part of the Basic Guidelines.

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• 9.

### Never side load a round pin shackle.

• A.

TRUE

• B.

FALSE

A. TRUE
Explanation
Side loading a round pin shackle can cause it to fail under load. Round pin shackles are designed to be loaded in-line with the pin, not at an angle. When a round pin shackle is side loaded, it puts stress on the pin and can cause it to bend or break. This can lead to the shackle coming apart and potentially causing injury or damage. Therefore, it is important to never side load a round pin shackle to ensure safety and prevent accidents.

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• 10.

### Sometimes we need to use__________to avoid damaging rigging and/or equipment.

• A.

• B.

Softeners

• C.

W.L.L

• D.

Common sense

B. Softeners
Explanation
Softeners are sometimes needed to avoid damaging rigging and/or equipment. Softeners are materials or devices that are used to cushion or protect the rigging or equipment from excessive force or pressure. They can be used to distribute the load more evenly, reduce friction, absorb shock, or provide a buffer between the rigging and equipment. By using softeners, potential damage to the rigging or equipment can be minimized, ensuring their longevity and safe operation.

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• 11.

### When all legs of the sling will be equally spaced around the center of gravity, the sling sizes should be based on only four legs as the load can teeter from corner to corner thus loading only two slings.

• A.

TRUE

• B.

FALSE

B. FALSE
Explanation
When all legs of the sling are equally spaced around the center of gravity, the load will be evenly distributed among all the legs. This means that each sling will bear an equal portion of the load, and there will be no teetering or uneven loading. Therefore, the statement that the sling sizes should be based on only four legs is incorrect. The correct answer is FALSE.

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• 12.

### When using a 2 part bridle it is better to have a higher sling angle for more lifting capacity.

• A.

TRUE

• B.

FALSE

A. TRUE
Explanation
A higher sling angle refers to the angle at which the sling is attached to the load being lifted. When using a 2 part bridle, a higher sling angle means that the load is being lifted more vertically, which allows for greater lifting capacity. This is because a higher sling angle reduces the load on each individual sling leg, distributing the weight more evenly and increasing the overall lifting capacity. Therefore, having a higher sling angle is indeed better when using a 2 part bridle.

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• Current Version
• Mar 19, 2023
Quiz Edited by
ProProfs Editorial Team
• Jun 25, 2008
Quiz Created by
Kiewit

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