NCCCO Lattice Boom Crawler Crane
QUESTIONS & ANSWERS(RATED A+)
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
What is the main purpose of mid point suspension pendants? - ANSWER To absorb shock that
comes with dynamic loading
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
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
