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Where is the best location for leveling the crane
Upperworks
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When determining the Agross load = the best method is
Get an accurate load weight and add the rigging
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By order of hitch strength, which is the correct answer (strongest rating to least strongest rating)
Basket, Vertical, Choker
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What is the purpose of using a jib
Increase Height
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When taking a side strain on a boom, what concerns the operator most
Boom damage
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You should always have at least how many wraps on a hoist drum
2 ANSI 5-1.3.1(1)
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On a load chart, values above the bold line mean:
Capacities are based on structural competence
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The primary purpose for a rooster sheave or auiliary boom point sheave is to:
Separate the hoist lines
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What is the proper procedure when using an insulating link or a boot near power lines
Be sure to maintain the correct allowable distance from the lines
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When the number of layers of rope on a drum increases the:
Allowable line pull decreases
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What is the minimum allowable distance from the crane and powerlines under 50kV
10ft
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The term upperworks of superstructure refer to the area of the crane:
Above the turntable
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Side loading may be caused by:
Starting or stopping the swing to rapidly
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What is the best procedure to follow when underground utilities may be present
Contact local utility company
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Eccentric boom tip reeving causes:
Twisting of the boom (IPT)
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How many randomly broken wires must there be to remove a running wire rope from service
6 (OSHA and ANSI)
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When lifting personnel in a man basket using 6X19 wire rope, the minimum safety factor is
7 (OSHA and ANSI)
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What is the safety factor required when using non-rotating wire rope and lifting personnel in a man basket
10 (OSHA)
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Who has the responsibility for determining the correct weight of a load
Supervisor
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When working near powerlines when is a signal person required
When the crane moves within a booms length of the powerlines (ANSI 5-3.4.5.2)
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When an operator leaves the crane, he must first:
Put the load on the ground and put all dogs or prawls in.
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If replacing the hoist line wire rope on a crane, how do you determine the size or type of wire rope to use
Use manufacturers operators manual or load chart.
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After the crane has been checked out and before crane lift operations begin the crew should
Have a pre-lift meeting (OSHA g8)
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According to ANSI B30.5 personnel platform lifts should not be made with the wind in excess of:
15MPH ANSI 5-3.2.2(21)
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When is it safe to work closer than the allowable distance from powerlines
When the utility company says lines are de-energized (OSHA)
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During setup how do you determine machine clearances (counterweight, boom, outrigger)
Measure for correct distances
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When operating a crawler crane what is the most unstable allowable quadrant of operation
Side
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When operating a truck crane what is the most unstable allowable quadrant of operation
Side
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What is not a good location for crane setup
Above Utilities
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When should a tagline be used
When rotation of load would be dangerous ANSI 5-3.2.1.4(o)
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When an operator arrives at the jobsite and the crane is already erected, how would the operator check the main and auxiliary hoist brakes
Lift the load off the ground and apply the brake ANSI 5-3.2.1.4(g)
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What is the difference between an anti-two-block warning device and an anti-two-block prevention system
Warning device only warns, but prevention system will stop the operation
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Who gives the operator hand signals
The person assigned prior to the lift
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Why use mats or cribbing
To reduce ground pressure
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Tipping capacities of crawler cranes are based on what percentage of tipping
75% ANSI 5-1.1.1
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Should the load be applied when determining the proper boom angle
Yes
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When should the operator use the run by the seat of the pants technique
Never
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Load radius is the distance from the center of gravity of the suspended load to the
Center of rotation
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What is the primary reason for using a boom extension
Increase Height
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What is the minimum design factor required for a right regular lay main, boom, or auxiliary hoist rope
3.5 ANSI 5-1.7.1
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When telescoping the boom section of a R/T, which section should be telescoped first
All sections should be telescoped equally
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How does the operator determine if the correct load chart is being used
Matching serial number
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Net capacity is equal to
Gross capacity minus deductions
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if the SWL of a cranes wire rope is 10,000 lbs using one part, what is the SWL when using 4 parts
40,000 lbs
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When first arriving on the jobsite, the operator should first determine the condition of the
Access roads
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How does the operator verify the LMI's boom length or load radius reading
Actual measurements
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if the rated capacity of the crane is above the solid line, within the shaded areas, or had an asterisk next to it, this means the capacity is based on:
Structural competence
-
All Hazards and potential problems should be discovered during the
Pre-lift site inspection
-
How many broken wires must be present in one strand of on lay for running wire rope to be removed from service
3
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In range diagram, boom length and angle can be used to determine
Load radius
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