The term "Superstructure or Upper works" refers to the area of the crane: - ANSWERAbove the swing circle
A crane must be level within _______% for the load chart ratings to be valid? - ANSWER1%
Which of the following matches the appropriate load chart to a particular crane? - ANSWERSerial num...
The term "Superstructure or Upper works" refers to the area of the crane: - ANSWERAbove the swing
circle
A crane must be level within _______% for the load chart ratings to be valid? - ANSWER1%
Which of the following matches the appropriate load chart to a particular crane? - ANSWERSerial
number
A durable rating chart with legible letters and figures shall be provided with each crane accessible to:
- ANSWERThe operator at the controls
On what principle is crane stability based? - ANSWERLeverage
What would be the effect of moving the tipping axis closer to the cranes center of gravity? -
ANSWERReduced stability
The lifting capacities listed in the load chart assume that: - ANSWERThe lift is to be performed under
ideal conditions
A "rough terrain" crane set up on outriggers that is based on 85% tipping should have the tires: -
ANSWEROff the supporting surface
Load charts are based on stationary loads, which are also known as: - ANSWERStatic loads
The capacity in a mobile crane's load chart are based on either structural limits or - ANSWERStability
The values listed in the manufacture's load chart show: - ANSWERRated capacities
, Net capacity is: - ANSWERManufactures load ratings minus capacity deductions
When determining the "gross load" the best method is: - ANSWERGet an accurate load weight and
add the rigging
The weights of load handling devices, such as load blocks, spreader bars, and slings are considered: -
ANSWERPart of the load
Gross capacity is 10,300 Ibs total deductions are 7,622 lbs. What is the net capacity? - ANSWER2,678
lbs.
Boom length is measured from the: - ANSWERCenter of the heel pin(s) to the center of the boom tip
sheaves
The boom angle indicator indicates the booms angle to the: - ANSWERHorizontal
Load radius is defined as: the horizontal distance from the centerline of rotation line with: -
ANSWERThe rated load suspended
You are lifting a load directly under the hook. As you put tension on it, the load lifts away from crane.
What caused the increased in load radius as should have been placed? - ANSWERBoom deflection
A crane that is set up properly should have the tires off the supporting surface and should be: -
ANSWERSufficient to support the crane and the load
When a boom extension considered to be inits stowed position, it is: - ANSWERPinned to the boom
base section
Crawler cranes produce the least amount of ground pressure is over the: - ANSWERSide
What is the best source of information for determining boom tip height? - ANSWERWorking range
diagram
What is the purpose of a work area diagram (chart)? - ANSWERTo identify operational quadrants
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