Operating A mobile crane with a long boom, on uneven ground, what support condition should be considered?
A) Blocking under the outrigger berms
B) Keeping a 75 Degree angle between cylinder rod and pad
C) Keeping a 90 Degree angle between cylinder rod and pad
D) Blocking under the front bumper ...
,Operating A mobile crane with a long boom, on uneven ground, what support condition
should be considered?
A) Blocking under the outrigger berms
B) Keeping a 75 Degree angle between cylinder rod and pad
C) Keeping a 90 Degree angle between cylinder rod and pad
D) Blocking under the front bumper weight - CORRECT ANSWERS-C) Keeping a 90
Degree angle between cylinder rod and pad
When may blocking (Cribbing) be placed under outrigger beams on mobile cranes?
A) Extending Beams
B) Increasing Capacity
C) Improving Stability
D) Never Approved - CORRECT ANSWERS-D) Never Approved
Mobiles Cranes should be level within what percent of Grade?
A) 3%
B) 2%
C) 5%
D) 1% - CORRECT ANSWERS-D) 1%
Timber Crane mats work best when they are:
A) Bolted Together
B) Nailed Together
C) Wired Together
D) Left Loose - CORRECT ANSWERS-A) Bolted together
When arriving in the crane at the job site, the operator should first determine the
condition of the:
A) Crane setup location
B) Access Roads
C) Parking Lot
D) Headache Ball - CORRECT ANSWERS-B) Access Roads
What surface listed below would NOT be a good location for assembly or setup of a
mobile crane?
, A) Above Compacted Fill
B) Above Highway Asphalt
C) Above Underground Vaults
D) Above Highway Concrete - CORRECT ANSWERS-C) Above Underground Vaults
Each Outrigger pad and its blocking should be sufficient to support?
A) 85% of the load Chart
B) The total weight of the crane and its load
C) The total weight of the crane and its boom
D) 75% of the load chart - CORRECT ANSWERS-B)The total weight of the crane and
its load
What is the purpose of Placing Mats or Cribbing under outrigger Floats?
A) Raise the Tires off the ground
B) Distribute the force over a larger area
C) Allow the float to be Level with Surface
D) Raise the operator's cab for better vision. - CORRECT ANSWERS-B.) Distribute the
force over a larger area.
Where is the best location for leveling a Crane?
A) Carrier
B) Upperworks
C) Cab
D) Carbody - CORRECT ANSWERS-B) Upperworks
Before Leveling a mobile crane on outriggers, an operator should ensure:
A) the weight of the crane is on all the tires
B) There is blocking under the outrigger beams
C) There is no weight of the crane bearing on any tires
D) There is weight only bearing on some tires - CORRECT ANSWERS-C) There is no
weight of the crane bearing on any tires
How does high wind affect a mobile crane with a long boom
A) Decrease load line capacity
B) Requires you to slip the swing brake
C) Introduces side load onto the boom
D) Has no effect on overall crane capacity - CORRECT ANSWERS-C) Introduces side
load onto the boom
When is the only time the outrigger beams should be less than fully extended?
A) The load Chart indicates that this is allowed
B) There is not enough space to extend the beam
C) The crane is working over the front
D) the main boom is fully retracted - CORRECT ANSWERS-A) The load chart indicates
that this is allowed
What is the primary purpose for a rooster sheave or auxiliary boom point sheave?
A) Separate the load hoist lines
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