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NCCCO EXAM
When hoisting personnel, within what percentage of level must a telescopic boom crane be in order for the gross ratings in the load chart to remain valid? Answer- 1% Load line of crane becomes energized by power line. There are no signs of any other danger. What do you do? Answer- stay in cab until lines are de-energized.According to OSHA 1926.1413, how many randomly distributed broken wires in rotation resistant rope are cause for replacement? Answer- 2 broken wires in 6 rope diameters What may happen to a properly rigged load when lifted off the ground unless the operator takes account of boom deflection? Answer- It could swing away from the crane.Which area do truck cranes without a 5th outrigger generally have no lifting capacity unless the manufacturer states otherwise? Answer- The front What is the definition of operating radius? Answer- The distance from the center of rotation of the crane to the center of gravity of the load What applies to the capacities below the bold line shown on the load chart? Answer- They are based on the stability of the crane.In what quadrant are rough terrain crane capacities generally greater? Answer- Over the front By what percentage do most manufacturers require a cranes load chart capacity to be reduced by for duty cycle operations such as high volume concrete placement?Answer- 20% From which two points should the boom be measured? Answer- From the boom hinge pins to the center of the boom tip sheave.Over which quadrant are truck crane capacities generally greater? Answer- Over the rear What is the osha regulation governing cranes in construction? Answer- 1926.1400 Under which circumstance is a crack in a cab windshield ok? Answer- As long as it causes no visible distortion that would interfere with safe operation.
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