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These sample questions are intended
to convey something of the style and content
of the National Operator Certification Program
examination developed and administered by the
National Commission for the Certification of
Crane Operators (NCCCO). They are not actual test
questions, nor do they attempt to address all
of the areas of knowledge tested on the CCO certification
examination. Response to these questions is not
necessarily an indication of performance on the
CCO examinations.
(Note: N/A means Not Applicable)
Configuration 1
| Outriggers: N/A |
Extension /Jib length: 30 ft |
| Counterweight: 179,100 CC, 44,000 CB |
Extension /Jib angle: 5° |
| Tires: N/A |
Block: 200 ton, 4,400 lbs, 4 parts line, 10 ft below tip |
| Crawlers: Extended |
Headache Ball: 15 ton, 850 lbs |
| Main boom type, length: 22EL, 170 ft |
Rigging: 200 lbs |
| Main Boom angle: 52° |
Wire rope (main boom): 1" 2 lbs/ft |
| Radius: 130 ft |
Wire rope (extension/jib): 1" 2 lbs/ft |
| Other: N/A |
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NOTE: For line in use, deductions for wire rope length beneath boom/jib shall be based on the boom/jib point-elevation column listed on the boom/jib capacity chart. Boom/jib point-elevation shall be rounded to the nearest whole number.
What is the net capacity off the jib?
A. 21,542 lbs
B. 23,000 lbs
C. 27,400 lbs
D. 28,300 lbs
Configuration 2
| Outriggers: N/A |
Extension /Jib length: 30 ft |
| Counterweight: 179,100 w/ 44,000 Car body |
Extension /Jib angle: 15° offset |
| Tires: N/A |
Block: 3,200 lbs, 3 parts line, 15 ft below tip |
| Crawlers: Extended |
Headache Ball: 1,000 lbs single part |
| Main boom type, length: 22EL, 200 ft |
Rigging: 500 lbs |
| Main Boom angle: 58.9° |
Wire rope (main boom): 1" 2 lbs/ft |
| Radius: N/A |
Wire rope (extension/jib): 1" 2 lbs/ft |
| Other: N/A |
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NOTE: For line in use, deductions for wire rope length beneath boom/jib shall be based on the boom/jib point-elevation column listed on the boom/jib capacity chart. Boom/jib point-elevation shall be rounded to the nearest whole number.
What is net capacity off the jib?
A. 9,900 lbs
B. 20,000 lbs
C. 21,410 lbs
D. 29,500 lbs
Configuration 3
| Outriggers: N/A |
Extension /Jib length: N/A |
| Counterweight: 179,100 lbs CC, 44,000 lbs CB |
Extension /Jib angle: N/A |
| Tires: N/A |
Block: 50 ton, 2,000 lbs, 2 parts line |
| Crawlers: Extended |
Headache Ball: 15 ton, 600lbs, 10 ft below tip |
| Main boom type, length: 180 ft |
Rigging: 150 lbs |
| Main Boom angle: N/A |
Wire rope (main boom): 1" 2 lbs/ft |
| Radius: 77 ft |
Wire rope (extension/jib): 1" 2 lbs/ft |
| Other: N/A |
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NOTE: For line in use, deductions for wire rope length beneath boom/jib shall be based on the boom/jib point-elevation column listed on the boom/jib capacity chart. Boom/jib point-elevation shall be rounded to the nearest whole number.
What is the net capacity of the crane off the block at 360 degrees?
A. 45,042 lbs
B. 51,642 lbs
C. 53,642 lbs
D. 59,442 lbs
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