.png){kind=logo}
NCCCO Lattice Boom Crawler Crane questions and answers \ A+ Grade
On a lattice boom crawler crane, the main boom length is measured from the:
- correct 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?
- correct answer To absorb shock that comes with dynamic loading
The main purpose of a gantry or a mast on a crane is:
- correct 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
- correct answer Increases the probability of tipping
When using a mobile crane on a barge, the crane's load capacity chart shall be
- correct answer Replaced by a list chart
Blocking can be placed under the ends of tracks to:
- correct answer Increase the crane's stability when operating over the front or back
A crawler crane is based on ________ stability of static load.
- correct answer 75%
- / 2
What quadrant produces the least amount of ground pressure on a lattice crawler
- correct answer Side
When a crawler crane is on a barge, the list chart must be provided by the
- correct answer Manufacturer
When operating a crawler crane, the ground pressure will always be highest over the
- correct answer Corner
Unless working in loos soft soil, a crawler crane should always travel _____ on pick and carry operations
- correct answer Towards the load
Why use mats of cribbing
- correct answer To reduce ground pressure
Mats are usually _____ to hold together.
- correct answer Bolted
A crawler crane traveling forward is defined as traveling in the direction of
- correct answer The idler
When disassembling or assembling booms on lattice boom cranes, it is extremely important to
- correct answer Never touch any pin on any boom section located between the pendant attachment
points and the crane
On a lattice boom crane, the device that automatically stops the boom when it nears the maximum angle is the
- correct answer Boom hoist kick out
When is it safe to handle loads under power lines
- correct answer The load nor any part of the crane can come closer than regulations allow
- / 2
.png)