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NCCCO Telescopic Boom Crane - Lattice Boom Crawler Crane Summer LATEST UPDATED Exam Review WITH COMPLETE Questions and SURE VERIFIED Answers 100%
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- On a lattice boom crawler crane, the main boom length is
measured from the: - ANSWER ✔ Center of the boom heel pins to
the center of the boom tip sheave
- Manufacture specs only permit a certain amount of boom to be
suspended out past the connection point of the pendants during assembly or disassembly of the boom. This portion of boom is called the - ANSWER ✔ Cantilever Length
- When installing a pin-connected lattice boom on a mobile crane,
you should always - ANSWER ✔ Use the boom hoist pawl to hold the boom
- When making a lift with a lattice boom crawler crane, ground
pressure can be reduced by lifting over the - ANSWER ✔ Side
- Pendant spreader bars on long booms are used to prevent -
ANSWER ✔ Main pendants from scrubbing the boom sides 1 / 2
- What is the main purpose of mid point suspension pendants? -
ANSWER ✔ To absorb shock that comes with dynamic loading
7. The main purpose of a gantry or a mast on a crane is: - ANSWER
✔ To increase the crane's leverage on the boom
- What effect does having the crawlers retracted have on a crawler
crane with a long boom - ANSWER ✔ Increases the probability of tipping
- When using a mobile crane on a barge, the crane's load capacity
chart shall be - ANSWER ✔ Replaced by a list chart
10. Blocking can be placed under the ends of tracks to: -
ANSWER ✔ Increase the crane's stability when operating over the front or back
- A crawler crane is based on ________ stability of static load.
- ANSWER ✔ 75%
- What quadrant produces the least amount of ground pressure
on a lattice crawler - ANSWER ✔ Side
- When a crawler crane is on a barge, the list chart must be
provided by the - ANSWER ✔ Manufacturer
- When operating a crawler crane, the ground pressure will
- / 2
always be highest over the - ANSWER ✔ Corner
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