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50 Cards in this Set
- Front
- Back
Where is the best location for leveling a crane?
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Upperworks
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When determining the a gross load the best method is:
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Get an accurate load weight and add the rigging.
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By order of hitch strength, which is the correct answer?
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Basket, vertical, choker
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What is the purpose of using a Jib?
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To increase height
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When taking a side strain on a boom, what concerns the operator most?
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Boom damage
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You should always have at least how many wraps on a hoist drum?
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2
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On a load chart, values above the bold line mean:
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Capacities based on structural competence.
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The primary purpose for a rooster sheave or Auxiliary boom point sheave is to:
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Separate the hoist lines.
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What is the proper procedure when using an insulating link or a boot near power lines?
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Be sure to maintain the correct allowable distance from the lines. OSHA
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When the number of layers of rope on a drum increases the:
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Allowable line pull decreases
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What is the minimum allowable distance from the crane and powerlines under 50kV?
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10 ft.
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The term Upperworks or Superstructure refer to the area of the crane:
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above the turntable
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Side loading my be cause by:
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Starting or stopping the swing to rapidly.
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What is the best procedure to follow when underground utilities may be present?
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Contact local utility company
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Eccentric main boom tip reeving causes:
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Twisting of the boom
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How many randomly broken wires must there be to remove a running wire rope from service?
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6 OSHA and ANSI
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When lifting personnel in a man basket using 6 X 19 wire rope, the minimum safety factor is?
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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?
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10 OSHA
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Who has the responsibility for determining the correct weight of a load?
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Supervisor
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When working near powerlines when is a signal person required?
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When crane moves within a booms length of the powerline
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When an operator leaves the crane, he must first:
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Put the load on the ground and put all dogs or pawls 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 Manufacturer’s operator’s manual or load chart
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After the crane has been checked out and before crane lift operations begin the crew should:
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Have a pre-lift meeting OSHA (g)(8)
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According to ANSI B30.5 personnel platform lifts should not be made with wind in excess of:
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15 mph ANSI 5-3.2.2(21)
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When is it safe to work closer than the allowable distance from powerlines?
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When utility company says lines are de-energized OSHA
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During setup how do you determine machine clearances (counterweight, boom, outrigger)?
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Measure for correct distances
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When operating a crawler crane what is the most unstable allowable quadrant of operation?
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Side
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When operating a truck crane what is the most unstable allowable quadrant of operation?
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Side
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What is not a good location for crane setup?
1. Compacted fill 2. Hard fill 3. Above utilities 4. Concrete |
Above utilities
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When should a tagline be used?
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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?
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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?
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Warning device only warns, but prevention system will stop the operation
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Who gives the operator hand signals?
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The person assigned prior to the lift
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Why use mats or cribbing?
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To reduce ground pressure
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Tipping capacities of crawler cranes are based on what percentage of tipping?
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75%
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Should the load be applied when determining the proper boom angle?
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Yes Charts
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When should the operator use the run by the seat of the pants technique?
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Never
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Load radius is the distance from the center of gravity of the suspended load to the:
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Center of rotation IPT, Charts
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What is the primary reason for using a boom extension?
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Increase Height
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What is the minimum design factor required for a right regular lay main, boom or auxiliary hoist rope?
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3.5
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When telescoping the boom section of an R/T, which section should be telescoped first?
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All sections should be telescoped equally Charts
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How does the operator determine if correct load chart is being used?
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Matching Serial number
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Net capacity is equal to:
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Gross capacity minus capacity 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?
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40,000 lbs.
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When first arriving on the jobsite, the operator should first determine the condition of the:
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Access Roads
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How does the operator verify the LMIs boom length or load radius reading?
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Actual Measurements
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If the rated capacity of the crane is above the solid line or within the shaded areas or has an asterisk next to it, this means the capacity is based on:
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Structural competence
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All hazards and potential problems should be discovered during the:
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Pre-lift site inspection
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How many broken wires must be present in one strand of one lay for running wire rope to be removed from service?
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3
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In a range diagram, boom length and angle can be used to determine:
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Load radius
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