TIONS AND VERIFIED ANSWERS|GRADED A+|PASS ON FIRST AT-
What is the main purpose of mid point suspension pendants? - ANSWER To absorb shock
that comes with dynamic loading
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
The main purpose of a gantry or a mast on a crane is: - ANSWER To increase the crane's
leverage on the boom
When using a mobile crane on a barge, the crane's load capacity chart shall be - ANSWER
Replaced by a list chart
What effect does having the crawlers retracted have on a crawler crane with a long boom -
ANSWER Increases the probability of tipping
Blocking can be placed under the ends of tracks to: - ANSWER Increase the crane's stabil-
ity 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 - AN-
SWER Side
When a crawler crane is on a barge, the list chart must be provided by the - ANSWER
Manufacturer
1
, When operating a crawler crane, the ground pressure will always be highest over the - AN-
SWER 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 at-
tachment 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 con-
nection 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 - AN-
SWER Use the boom hoist pawl to hold the boom
2
What is the main purpose of mid point suspension pendants? - ANSWER To absorb shock
that comes with dynamic loading
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
The main purpose of a gantry or a mast on a crane is: - ANSWER To increase the crane's
leverage on the boom
When using a mobile crane on a barge, the crane's load capacity chart shall be - ANSWER
Replaced by a list chart
What effect does having the crawlers retracted have on a crawler crane with a long boom -
ANSWER Increases the probability of tipping
Blocking can be placed under the ends of tracks to: - ANSWER Increase the crane's stabil-
ity 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 - AN-
SWER Side
When a crawler crane is on a barge, the list chart must be provided by the - ANSWER
Manufacturer
1
, When operating a crawler crane, the ground pressure will always be highest over the - AN-
SWER 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 at-
tachment 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 con-
nection 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 - AN-
SWER Use the boom hoist pawl to hold the boom
2
