NCCCO Rigger 1 Study Questions & Answers 100% Correct!
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Course
NCCCO Rigger 1
Institution
NCCCO Rigger 1
1. A wire rope that is a 6x19 classification could have how many wires per strand? - ANSWER15 through 26 wires per strand
2. How often should a synthetic web sling be inspected? - ANSWEREach day before use
5. Which of the following defects discovered during an inspection would cause for remov...
NCCCO Rigger 1 Study Questions & Answers
100% Correct!
1. A wire rope that is a 6x19 classification could have how many wires per strand? - ANSWER15
through 26 wires per strand
2. How often should a synthetic web sling be inspected? - ANSWEREach day before use
5. Which of the following defects discovered during an inspection would cause for removing a wire
rope sling from service? - ANSWERTen 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? - ANSWERCompetent person
3. Which considerations should be given to suspend lifting operations with a mobile crane? -
ANSWERWinds in excess of 35 mph
4. What is the term that best describes surface wear on a wire rope sling to rubbing or sliding? -
ANSWERAbrasion
7. When the hoist line is not vertical what type of dynamic force is being introduced to the crane? -
ANSWERSide pull
8. What is the term used to describe the ultimate or maximum load that a sling fails at ? -
ANSWERBreaking strength
9. A non-shouldered eyebolt is primarily designed for lifting in which plane ? - ANSWERVertical
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? - ANSWER1/2 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? - ANSWERShock 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? - ANSWERA2+B2=C2 look at paper
13. What is the approximate weight of one cubic foot of steel ? - ANSWER480 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? - ANSWERAlloy steel chain sling
15. Where would you measure to check the diameter of wire rope? - ANSWERAcross the crowns
16. How is the working load limit of slings determined? - ANSWERDivide the breaking strength by the
design factor
26. What action should be taken if damaged rigging or rigging hardware is found ? - ANSWERRemove
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 ? - ANSWERRight-lay, lang-lay
28. Which rigging hitch forms a slip noose around the object that is to be lifted or moved ? -
ANSWERChoker
17. What is the formula used to find volume of a rectangle? - ANSWERLength x height x width
18. The tag on a synthetic web sling shall have what required information on it ? - ANSWERName 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 ? - ANSWERThe leg has been over loaded
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