1
NCCCO Lattice Boom Crawler Crane Questions with
Answers (100% Correct Answers)
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%
© 2025 All rights reserved
, 2
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 always be
highest over the— Answer: Corner
Unless working in loos soft soil, a crawler crane should always travel
_____ on pick and carry operations— Answer: Towards the load
Why use mats of cribbing— Answer: To reduce ground pressure
Mats are usually _____ to hold together.— Answer: Bolted
A crawler crane traveling forward is defined as traveling in the
direction of— Answer: The idler
When disassembling or assembling booms on lattice boom cranes, it is
extremely important to— Answer: Never touch any pin on any boom
section located between the pendant attachment points and the crane
© 2025 All rights reserved
NCCCO Lattice Boom Crawler Crane Questions with
Answers (100% Correct Answers)
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%
© 2025 All rights reserved
, 2
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 always be
highest over the— Answer: Corner
Unless working in loos soft soil, a crawler crane should always travel
_____ on pick and carry operations— Answer: Towards the load
Why use mats of cribbing— Answer: To reduce ground pressure
Mats are usually _____ to hold together.— Answer: Bolted
A crawler crane traveling forward is defined as traveling in the
direction of— Answer: The idler
When disassembling or assembling booms on lattice boom cranes, it is
extremely important to— Answer: Never touch any pin on any boom
section located between the pendant attachment points and the crane
© 2025 All rights reserved
