Rigging practices Questions with Verified Answers
net capacity
80%
3/4 in
false
equal to or
greater than
false
designated spot-
ter must be sta-
tioned to watch
clearances
(50%)
false
booming down
false
false
A load chart range diagram can best be used to help
identify:
for mobil...
Rigging practices Questions with Verified Answers
1. net capacity A load chart range diagram can best be used to help
identify:
2. 80% for mobile crane working at maximum radius, exceeding
what percentage of the cranes capacity requires the radius
to be verified?
3. 3/4 in the minimum depth of thread engagement for a 1/2 in
eyebolt into steel object is?
4. false when tying knots in synthetic rope lashing, the rated load
is increased by 50% ?
5. equal to or the size of shackle that can be used in the eye of a wire
greater than rope sling must be the wire rope size?
6. false a shackle must be marked with the rated load, re-inspect-
ed due date, and the date manufacture?
7. designated spot- when working near energized power lines where the crane
ter must be sta- or load could cross the absolute limit of approach, what
tioned to watch additional requirements must the crane team follow?
clearances
8. (50%) the load weight of a personnel lift must not exceed
of the hoists rated capacity for the working radius ?
9. false a manufacturer's certificate of proof test may satisfy the
initial test requirements for rigging equipment?
10. booming down which of the following operator actions will most likely
cause a reduction in the capacity of a mobile crane?
11. false an angular pull of 45 degrees is allowed on non shoul-
dered type eye bolts?
12. false two slings creating a 60 degree sling angle are used to lift
a 4,000 pound item. the appropriate rated load for each
sling is 2,000 pounds.
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, Rigging practices Questions with Verified Answers
13. never when are loads allowed to be moved over personnel?
14. 1800 lbs given a 1/2 in steel walled empty cylindrical tank that is
opened at one end, calculate its weight (round answer to
the nearest hundred)
15. over rigging the a crane accident occurs when any one of the elements
load in the crane operating envelope fails to perform correctly
during crane operations, maintenance, or testing, which
results in any of the following except:
16. 100% a straight-line hitch is good for of a sling rated load?
17. 2000 lbs there are three slings hanging from a hook. each sling has
a rated capacity of 2,000 lbs. what is the heaviest load that
could be lifted using these slings if they were attached to
a single point
18. to determine why must hoisting be stopped once the load is completely
sling angle off the ground?
stress
19. the crane op- the minimum crane team consist of ?
erator and rig-
ger-in-charge
20. as low as possi- while traveling a crane with a load, loads should be kept?
ble
21. before and after attachment points must be visually inspected?
each use
22. all of the above when rigging your own loads, you are responsible for?
23. all of the informa- rigging gear test and inspection records must include:
tion listed above
24. operation the crane operator is responsible for the safe of the
crane
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