National Commission For The Certification Of Crane Operators - NCCCO

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Written Exam - Sample Test Questions
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Lattice Boom Truck Crane (LBT)

These sample questions are intended to convey something of the style and content of the Crane Operator Certification Program written examinations 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 examinations. Response to these questions is not necessarily an indication of performance on the CCO examinations.

(Note: N/A means Not Applicable)

Sample Item #1

Configuration On Fully Extended Outriggers Extension 40-ft. jib
Counterweight 95,400-lb. + 25,000-lb. Ext. Off-set / Angle 5-degrees
Main Boom 140-ft. Block 5,000-lb., 4-parts of line
Main Boom Angle 60.3-degrees Ball 500-lb., 1-part of line, 15-ft. below tip
Radius N/A Rigging 1,000-lb.
Other Boom Butt Mounted Auxiliary Drum Main Rope 2-lb./ft.
Other N/A Aux. Rope  2-lb./ft.

Note: For line in use, deductions for wire rope length beneath boom/jib point shall be based on boom/jib point-elevation column listed on the boom/jib capacity chart. Round boom/jib point elevation to the nearest whole number.

What is the net capacity when lifting from the main boom over the side?

A.   39,100 lbs.

B.   38,030 lbs.

C.   31,230 lbs.

D.   42,730 lbs.

 

Sample Item #2

Configuration On Fully Extended Outriggers Extension 30-ft. jib
Counterweight 95,400-lb. + 25,000-lb. Ext. Off-set / Angle 25-degrees
Main Boom 100-ft. Block 2,650-lb., 4-parts of line, 10-ft below tip
Main Boom Angle N/A Ball 500-lb., 1-part of line
Radius 105-ft. Rigging 375-lb.
Other N/A Main Rope 2-lb./ft.
Other N/A Aux. Rope  2-lb./ft.

Note: For line in use, deductions for wire rope length beneath boom/jib point shall be based on boom/jib point-elevation column listed on the boom/jib capacity chart. Round boom/jib point elevation to the nearest whole number.

What is the net capacity when lifting off the jib over the rear?

A.   26,029 lbs.

B.   25,375 lbs.

C.   25,129 lbs.

D.   21,229 lbs.

 

Sample Item #3

Configuration On Fully Extended Outriggers Extension 40-ft. jib
Counterweight 95,400-lb. + 25,000-lb. Ext. Off-set / Angle 15-degrees
Main Boom 140-ft. Block 5,000-lb., 4-parts of line
Main Boom Angle 68.5-degrees Ball 500-lb., 15-ft. below tip
Radius N/A Rigging 800-lb.
Other N/A Main Rope 2-lb./ft.
Other N/A Aux. Rope  2-lb./ft.

Note: For line in use, deductions for wire rope length beneath boom/jib point shall be based on boom/jib point-elevation column listed on the boom/jib capacity chart. Round boom/jib point elevation to the nearest whole number.

What is the net capacity when lifting off the main boom over the rear?

A.   73,200 lbs.

B.   66,304 lbs.

C.   60,374 lbs.

D.   61,074 lbs.

 

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