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28 Cards in this Set

  • Front
  • Back
Crane configuration includes:
Reeving, boom length, counterweight, on outriggers, on rubber, extensions or jibs stowed or mounted, offsets, wire rope type or construction
Capacities above the bold line on the load chart are based on:
Structural strength
If replacing the hoist line wire rope on a crane, how do you determine the size or type of
wire rope to use?
Use Manufacturer’s operator’s manual or load chart
Net capacity is equal to:
Gross capacity minus capacity deductions
The load weight numbers given in a crane load chart indicate the ___________that the
crane can safely lift.
Gross load
Which of these conditions will not dramatically affect the values illustrated on load charts?
a. Improper outrigger set up
b. Changing radius
c. Wind
If a jib is erected but not being used, it is treated as a deduction from the cranes:
Gross capacity
Tipping capacities of crawler cranes are based on what percentage of tipping?
In a range diagram, boom length and angle can be used to determine:
Load radius
When using load\capacity charts, what does the term “jib angle to ground” refer to?
Main boom angle minus the jibs offset
When making a lift on the main boom of an RT, the stowed lattice swing-a-way section:
Should be considered part of the cranes deductions
When you change the jib to ground angle from 400 to 300, you have:
decreased the capacity of the jib.
A lattice boom truck crane with a 120 ft. boom will be operating at a 42 ft. radius. The load
chart shows an entry indicating 25,000 lbs. at a 40 ft. radius, followed immediately by an
entry listing 20,000 lbs. at a 45 ft. radius. What is the crane’s capacity at the 42 ft. radius?
20,000 lbs
When using a mobile crane on a barge, the crane’s load capacity chart shall be:
replaced by a list chart.
A crane’s jib is offset 150 versus its original 00 offset, but the boom angle remains
If the jib is offset, the crane’s capacity will:
If a bold line is shown on a load chart, the capacities below the line:
stability of the crane
Rough terrain crane capacities are generally greater over the:
Over the front
On duty cycle operations, such as pouring concrete, most manufacturers require a crane’s
load chart capacity to be reduced by:
A truck crane is set up on outriggers. The part of the load chart governed by stability is
based on what percentage of the crane’s capacity?
You plan to pick a load you are told weighs 36,500 lbs. Line pull on the crane you are
operating is 9,000 lbs. How many parts of the line will you need?
If a jib is erected but not being used to lift the load, you should make a deduction from the
gross capacities listed in the load chart based on:
the effective weight of the jib
On a crawler crane, the part of the load chart governed by stability is based on what
percentage of its capacity?
When working on rubber, cranes are rated at what percentage of tipping?
When operating a crane on a barge, the list chart must be provided by:
the manufacture
When operating a mobile crane you inspect your running wire rope at least:
The effect of a loads leverage being greater than the crane’s leverage is:
How does the effective weight of a stowed jib/extension relate to the actual weight of the
Lower than the actual weight.