Mobile Crane Manitowoc (LBC) – TRUCK CRANES ONLY Quiz

Mobile Crane Manitowoc (LBC) – TRUCK CRANES ONLY Quiz

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Question 1 of 15
1. Question
When operating on tires, lattice boom truck cranes are rated at what percentage of tipping?
- 70%.
- 75%.
- 80%.
- 85%.
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Question 2 of 15
2. Question
Lattice boom truck crane manufactured after 11/8/2011 must have which of the following?
- Swing radius indicator.
- Boom length indicator
- Proximity warning device
- Outrigger position monitor.
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Question 3 of 15
3. Question
A lattice boom truck crane, with outriggers properly set, is rated at what percentage of its tipping capacity?
- 75%.
- 90%.
- 85%.
- 100%.
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Question 4 of 15
4. Question
On a lattice boom truck crane with the outriggers extended and set, and wheels still bearing machine weight, the operator should refer to what load chart in the manual?
- Back chart.
- Front chart.
- Rubber chart.
- 85% chart.
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Question 5 of 15
5. Question
On lattice boom truck cranes operating with outriggers retracted, the least stable position is when the boom is directly over the:
- Front.
- Rear.
- Side.
- Corner.
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Question 6 of 15
6. Question
A lattice boom truck crane with a 120 ft. boom will be operating at a 42 ft. radius. The load chart shows an entry indicating 25,000 lbs. at a 40 ft. radius, followed immediately by an entry listing 20,000 lbs. at a 45 ft. radius. What is the crane’s capacity at the 42 ft. radius?
- 20,000 lbs.
- 22,000 lbs.
- 23,000 lbs.
- 25,000 lbs.
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Question 7 of 15
7. Question
Lattice boom truck crane capacities are generally greater over which quadrant?
- Front.
- Rear.
- Right.
- Side.
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Question 8 of 15
8. Question
Outriggers must be set:
- to raise tires off the ground.
- to remove machine weight from the wheels.
- and fully extend the jack.
- so beam just touches frame.
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Question 9 of 15
9. Question
When operating a lattice boom truck crane and extending the outrigger beams from the upper cab, you should:
- boom up to 50 degrees.
- boom up to 65 degrees.
- swing over the side with a low boom.
- make visual contact with beam and jack.
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Question 10 of 15
10. Question
When making a lift on outriggers, the maximum ground-bearing pressure occurs in which boom position?
- Over the rear.
- Over the corner.
- Over the front.
- Over the side.
Correct
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Question 11 of 15
11. Question
Blocking or mats under the outrigger pads/float must be?
- parallel to the outriggers.
- able to sustain the load and maintain stability.
- perpendicular to the outriggers.
- at least three times the pad/float area.
Correct
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Question 12 of 15
12. Question
Select the correct OSHA Standard Method Hand Signal that matches the illustration.
- Trolley travel.
- Wheel travel.
- Swing.
- Stop.
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Question 13 of 15
13. Question
True or False – Wood mats work best when they are bolted together.
- True.
- False.
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Question 14 of 15
14. Question
Outrigger floats must:
- be round.
- not be secured to the jack.
- be secured to the jack.
- be sitting on concrete.
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Question 15 of 15
15. Question
Outrigger pad must be at a _____angle to the cylinder.
- 60°
- 70°
- 80°
- 90°
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