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Lattice Boom Crawler Crane Questions with Correct Answers
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Lattice Boom Crawler Crane Questions with Correct Answers
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Lattice Boom Crawler Crane Questions with CorrectAnswers
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 the 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 long boom? Correct Answer-Increase 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%
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 loose 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.
A crane with a 100 foot boom will be operating at a 41-ft. radius. The
load chart shows an entry indicating 25,000 lbs. at a 40-ft radius. What
is the crane's capacity at the 41 ft. radius. Correct Answer-21000 lbs.
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