NCCCO Lattice Boom Crawler Crane
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
, 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
On a lattice boom crane, the device that automatically stops the boom when it nears the maximum
angle is the - Answer-Boom hoist kick out
When is it safe to handle loads under power lines - Answer-The load nor any part of the crane can come
closer than regulations allow
Manufacture specs only permit a certain amount of boom to be suspended out past the connection
point of the pendants during assembly or disassembly of the boom. This portion of boom is called the -
Answer-Cantilever Length
When installing a pin-connected lattice boom on a mobile crane, you should always - Answer-Use the
boom hoist pawl to hold the boom
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
, 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
On a lattice boom crane, the device that automatically stops the boom when it nears the maximum
angle is the - Answer-Boom hoist kick out
When is it safe to handle loads under power lines - Answer-The load nor any part of the crane can come
closer than regulations allow
Manufacture specs only permit a certain amount of boom to be suspended out past the connection
point of the pendants during assembly or disassembly of the boom. This portion of boom is called the -
Answer-Cantilever Length
When installing a pin-connected lattice boom on a mobile crane, you should always - Answer-Use the
boom hoist pawl to hold the boom
