NCCCO CORE MOBILE CRANE
COMPLETE STUDY GUIDE | RATED
AND GRADED A+ | LATEST
2024/2025
Definition of operating radius
- Correct Answer - Distance from center of rotation to center of gravity of
the load
Which Quadrant are rough terrain crane capacities greater
- Correct Answer - Over the front
From which 2 points should the boom be measured
- Correct Answer - Boom hinge pins to center of boom tip sheeve
Which quadrant are truck crane capacities greater
- Correct Answer - Over the rear
Which accessible area of an operating crane must always be barricaded
- Correct Answer - Swing radius of superstructure
When does OSHA permit hoisting personnel by crane
- Correct Answer - When there is no less hazardous or practicable way
,While hoisting personnel total load must not exceed what percentage of
crane capacity
- Correct Answer - 50%
When is side loading of crane booms permitted
- Correct Answer - Only with freely suspended loads
Placing timber blocking under tips of tracks on crawler crane does what
- Correct Answer - More stability
According to ASME, what percentage of the manufacturers crane rating
must not be exceeded if a load test is done on a repaired crane
- Correct Answer - 100%
Where is the tipping axis of a crawler crane located
- Correct Answer - Depends on idler or sprocket
What to do with materials under energized power lines
- Correct Answer - Never be lifted by crane
Where should outrigger pads be placed when working at ground floor
level near a CELLAR WALL
- Correct Answer - At least as far back as the depth of the wall below
ground
What happens to ground bearing pressure if you move a crawler crane
from soft to hard ground
- Correct Answer - Stays the same
, When may a swivel be used with rotation resistant wire rope
- Correct Answer - If manufacture approves
What should you do on pick and carry operations
- Correct Answer - Keep boom length as short as possible
What boom position would cause the greatest ground pressure when
lifting with crawler cranes
- Correct Answer - Over the corner
How many parts of line are required to hoist a 36,500 lb. load of the
maximum allowable line pull is 9,000 lbs
- Correct Answer - 5
What determines the amount of deduction required for an erected jib that
is not being used
- Correct Answer - The effective weight of the jib
What capacity should you use when the boom length of the crane falls
BETWEEN the lengths listed in the load chart
- Correct Answer - The next longest or next shortest boom length,
whichever is the lower capacity.
What happens to the leverage of the lord on a crane as the boom lowers
- Correct Answer - It increases
Where would you find hand signals
- Correct Answer - OSHA Subpart CC
COMPLETE STUDY GUIDE | RATED
AND GRADED A+ | LATEST
2024/2025
Definition of operating radius
- Correct Answer - Distance from center of rotation to center of gravity of
the load
Which Quadrant are rough terrain crane capacities greater
- Correct Answer - Over the front
From which 2 points should the boom be measured
- Correct Answer - Boom hinge pins to center of boom tip sheeve
Which quadrant are truck crane capacities greater
- Correct Answer - Over the rear
Which accessible area of an operating crane must always be barricaded
- Correct Answer - Swing radius of superstructure
When does OSHA permit hoisting personnel by crane
- Correct Answer - When there is no less hazardous or practicable way
,While hoisting personnel total load must not exceed what percentage of
crane capacity
- Correct Answer - 50%
When is side loading of crane booms permitted
- Correct Answer - Only with freely suspended loads
Placing timber blocking under tips of tracks on crawler crane does what
- Correct Answer - More stability
According to ASME, what percentage of the manufacturers crane rating
must not be exceeded if a load test is done on a repaired crane
- Correct Answer - 100%
Where is the tipping axis of a crawler crane located
- Correct Answer - Depends on idler or sprocket
What to do with materials under energized power lines
- Correct Answer - Never be lifted by crane
Where should outrigger pads be placed when working at ground floor
level near a CELLAR WALL
- Correct Answer - At least as far back as the depth of the wall below
ground
What happens to ground bearing pressure if you move a crawler crane
from soft to hard ground
- Correct Answer - Stays the same
, When may a swivel be used with rotation resistant wire rope
- Correct Answer - If manufacture approves
What should you do on pick and carry operations
- Correct Answer - Keep boom length as short as possible
What boom position would cause the greatest ground pressure when
lifting with crawler cranes
- Correct Answer - Over the corner
How many parts of line are required to hoist a 36,500 lb. load of the
maximum allowable line pull is 9,000 lbs
- Correct Answer - 5
What determines the amount of deduction required for an erected jib that
is not being used
- Correct Answer - The effective weight of the jib
What capacity should you use when the boom length of the crane falls
BETWEEN the lengths listed in the load chart
- Correct Answer - The next longest or next shortest boom length,
whichever is the lower capacity.
What happens to the leverage of the lord on a crane as the boom lowers
- Correct Answer - It increases
Where would you find hand signals
- Correct Answer - OSHA Subpart CC
