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NCCCO RIGGER 1 STUDY QUESTIONS
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NCCCO RIGGER 1 STUDY QUESTIONS
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NCCCO RIGGER 1 STUDY QUESTIONS1. A wire rope that is a 6x19 classification could have how many wires per strand? -
Answers-15 through 26 wires per strand
2. How often should a synthetic web sling be inspected? - Answers-Each day before
use
3. Which considerations should be given to suspend lifting operations with a mobile
crane? - Answers-Winds in excess of 35 mph
4. What is the term that best describes surface wear on a wire rope sling to rubbing or
sliding? - Answers-Abrasion
5. Which of the following defects discovered during an inspection would cause for
removing a wire rope sling from service? - Answers-Ten broken wires in one lay
6. According to OSHA, each day before being used, all rigging hardware and slings
shall be inspected for damage or defects by a? - Answers-Competent person
7. When the hoist line is not vertical what type of dynamic force is being introduced to
the crane? - Answers-Side pull
8. What is the term used to describe the ultimate or maximum load that a sling fails at ?
- Answers-Breaking strength
9. A non-shouldered eyebolt is primarily designed for lifting in which plane ? - Answers-
Vertical
10. According to ASME B30.9, (Slings) what is the maximum width of an object that can
be placed in the eye of a wire rope sling? - Answers-1/2 the length
11. What is the term used to describe a sudden or unplanned loading of the crane when
raising or lowering a load that will increase the stress on rigging and the load? -
Answers-Shock loading
12. What formula is used to determine the sling length when you only know the hook
height and the distance from the center of gravity to the pick point? - Answers-
A2+B2=C2 look at paper
13. What is the approximate weight of one cubic foot of steel ? - Answers-480 pounds
(lbs)
, 14. Which type of sling is required to have permanent affixed identification tag stating
size, grade, rated capacity for hitch type that can be used? - Answers-Alloy steel chain
sling
15. Where would you measure to check the diameter of wire rope? - Answers-Across
the crowns
16. How is the working load limit of slings determined? - Answers-Divide the breaking
strength by the design factor
17. What is the formula used to find volume of a rectangle? - Answers-Length x height x
width
18. The tag on a synthetic web sling shall have what required information on it ? -
Answers-Name of manufacturer
Rated load for each hitch type
and type of material
19. One leg of a four leg alloy steel chain sling is longer than the other three; this is
possible indication of what type of damage ? - Answers-The leg has been over loaded
20. Using a cheater pipe on a chain hoist come along what will it give you ? - Answers-
More leverage
21. What type of hitches provides maximum contact between the sling and the load? -
Answers-Double wrap choker/ double wrap basket
22. According to 29CFR1910.184, polypropylene web slings shall not be used at
temperatures in excess of ? - Answers-200 degrees
23. According to 29CFR1910.184 which type of sling requires annual inspections, with
records retained, and be performed by a competent person designated by the
employer? - Answers-Alloy steel chain
24. What is the term used to describe the distance that it takes one strand to wrap 360
degrees around the core ? - Answers-One lay
25. What piece of rigging hardware should be used to prevent the wearing in the eye of
a wire rope sling ? - Answers-Thimble
26. What action should be taken if damaged rigging or rigging hardware is found ? -
Answers-Remove from service immediately and inform supervisor
27. Which type of wire rope construction has both the wires in the strand and the
strands in the rope laid right-handed in the right hand direction ? - Answers-Right-lay,
lang-lay
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