Large Load Chart Sample Questions
GROVE Large Telescopic (swing cab)
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: Fully extended & set
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Extension /Jib length: 32-56 tele/retracted @ 32 ft
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Counterweight: 7,800 lbs
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Extension /Jib angle: 0 degrees
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Tires: N/A
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Block: 15 ton, 1 sheave, 2 parts line
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Crawlers: N/A
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Headache Ball: 7.5 ton, hanging 10 ft below tip
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Main boom type, length: 55 ft
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Rigging: 200 lbs
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Main Boom angle: N/A
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Wire rope (main boom): 1 lb/ft
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Radius: 26 ft
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Wire rope (extension/jib): 1 lb/ft
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Other: N/A
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Note: For line in use when wire rope deductions are required, the wire rope length shall be measured from the boom tip to the ground.
What is the net capacity picking off the main boom over the rear?
A. 15,664 lbs
B. 16,054 lbs
C. 23,350 lbs
D. 27,750 lbs
Configuration 2
Outriggers: Fully extended & set
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Extension /Jib length: 32 ft fixed stowed
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Counterweight: 7,800 lbs
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Extension /Jib angle: N/A
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Tires: N/A
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Block: 45 ton w/o cheek plates, 2 parts line
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Crawlers: N/A
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Headache Ball: 7.5 Ton, hanging 10 ft below tip
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Main boom type, length: 65 ft
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Rigging: 750 lbs
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Main Boom angle: N/A
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Wire rope (main boom): 1 lb/ft
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Radius: 45 ft
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Wire rope (extension/jib): 1 lb/ft
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Other: Auxiliary Boom head mounted
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Note: For line in use when wire rope deductions are required, the wire rope length shall be measured from the boom tip to the ground.
Lifting from the main boom with the block, what is the net capacity over the side as configured?
A. 10,921 lbs
B. 10,947 lbs
C. 11,090 lbs
D. 11,197 lbs
Configuration 3
Outriggers: Fully extended & set
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Extension /Jib length: 44 ft
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Counterweight: 7,800 lbs
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Extension /Jib angle: 0 degrees
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Tires: N/A
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Block: N/A
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Crawlers: N/A
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Headache Ball: 7.5 Ton
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Main boom type, length: 100 ft
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Rigging: 150 lbs
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Main Boom angle: 50 degrees
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Wire rope (main boom): N/A
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Radius: 85 ft
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Wire rope (extension/jib): 3/4″ 1 lb/ft
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Other: Auxiliary Boom head
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Note: For line in use when wire rope deductions are required, the wire rope length shall be measured from the boom tip to the ground.
What is the net capacity off the jib?
A. 1,189 lbs
B. 1,449 lbs
C. 1,592 lbs
D. 2,569 lbs
