NCCCO CORE MOBILE CRANE

NCCCO CORE MOBILE CRANE

COMPLETE STUDY GUIDE | RATED

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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 1 / 3

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 2 / 3

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
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