NCCCO Lattice Boom Crawler Crane Exam
Questions with Answers
On a lattice boom crawler crane, the main boom length is measured from the: - -Center of
the boom heel pins to the center of the boom tip sheave
-What is the main purpose of mid point suspension pendants? - -To absorb shock that
comes with dynamic loading
-The main purpose of a gantry or a mast on a crane is: - -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
- -Increases the probability of tipping
-When using a mobile crane on a barge, the crane's load capacity chart shall be - -Replaced
by a list chart
-Blocking can be placed under the ends of tracks to: - -Increase the crane's stability when
operating over the front or back
-A crawler crane is based on ________ stability of static load. - -75%
-What quadrant produces the least amount of ground pressure on a lattice crawler - -Side
-When a crawler crane is on a barge, the list chart must be provided by the - -
Manufacturer
-When operating a crawler crane, the ground pressure will always be highest over the - -
Corner
-Unless working in loos soft soil, a crawler crane should always travel _____ on pick and
carry operations - -Towards the load
-Why use mats of cribbing - -To reduce ground pressure
-Mats are usually _____ to hold together. - -Bolted
-A crawler crane traveling forward is defined as traveling in the direction of - -The idler
-When disassembling or assembling booms on lattice boom cranes, it is extremely
important to - -Never touch any pin on any boom section located between the pendant
attachment points and the crane
Questions with Answers
On a lattice boom crawler crane, the main boom length is measured from the: - -Center of
the boom heel pins to the center of the boom tip sheave
-What is the main purpose of mid point suspension pendants? - -To absorb shock that
comes with dynamic loading
-The main purpose of a gantry or a mast on a crane is: - -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
- -Increases the probability of tipping
-When using a mobile crane on a barge, the crane's load capacity chart shall be - -Replaced
by a list chart
-Blocking can be placed under the ends of tracks to: - -Increase the crane's stability when
operating over the front or back
-A crawler crane is based on ________ stability of static load. - -75%
-What quadrant produces the least amount of ground pressure on a lattice crawler - -Side
-When a crawler crane is on a barge, the list chart must be provided by the - -
Manufacturer
-When operating a crawler crane, the ground pressure will always be highest over the - -
Corner
-Unless working in loos soft soil, a crawler crane should always travel _____ on pick and
carry operations - -Towards the load
-Why use mats of cribbing - -To reduce ground pressure
-Mats are usually _____ to hold together. - -Bolted
-A crawler crane traveling forward is defined as traveling in the direction of - -The idler
-When disassembling or assembling booms on lattice boom cranes, it is extremely
important to - -Never touch any pin on any boom section located between the pendant
attachment points and the crane
