Rigging Questions Quiz

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clainez27
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265176
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Rigging Questions Quiz
Updated:
2014-03-05 13:55:18
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Rigging
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Rigging Questions
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  1. What is the formula for the Area of a square?
    LxW  or S2(one side squared)
  2. What is the Volume of a Rectangle?
    LXWxH
  3. What is the Area of a circle?
    A=PieR2
  4. What is the Circumference of a Circle?
    Pie X Diameter
  5. What is the Volume of a Cylinder?
    Pie R X H
  6. What is the 6 ' Rule Method for Calculating Sling Stress?
    T= W/N X L/V

    Tension= Weight of Load/Number of Slings multiplied by Sling Length/ Vertical Distance
  7. When Making a Three Point Lift , how many sling legs are assumed to be supporting the load?
    2
  8. Name the Three Main Aspects of Successful Rigging?
    Safety, Communication, Control
  9. Shackles with screw pins are sized by the what?
    Bow
  10. What is the Formula for Block Loading( Single Part Line) ?
    Block Factor of Single part Line X Line Pull
  11. In a Frictionless single line pull is the load being dragged or lifted?
    Lifted
  12. When the Skyline deflection increases what happens to the tension on the Skyline?
    Decreases
  13. When lifting an object that is of an irregular shape and the total weight calculated you must then always find what?
    The Center of Gravity
  14. In a frictionless system, the load is 100 lbs, What is the Line Pull on the Tugger
    100 lbs
  15. Can you use the load cell in a crane and pick up the object to determine its weight if needed?
    No
  16. Knots shall not be used to configure synthetic rope slings because knots do what?
    Reduce Strength
  17. What is the safety factor applied to (most) rigging hardware when calculating the load weight and equipment required for a hoisting job___? What about Personal?
    • 5 to 1
    • 10 to 1 for Personal
  18. What is the line pull in theory on a 5 part line lifting a 2500 lb load?
    500 lb line pull
  19. If the Center of Gravity is above the lowest point of attachment the
    A. Slings may be unstable
    B. One should use a Spreader Bar
    C. The load will be stable
    D. The load may be unstable
    D. The load may be unstable
    (this multiple choice question has been scrambled)
  20. The main purpose of a spreader bar is to 
    A. Give adjustment for balancing the load
    B. Stop the load from Bending
    C. Allow the lifting beam to attach to the load
    D. Stop the rigging from crushing the load
    B. Stop the load from bending
    (this multiple choice question has been scrambled)
  21. When the skyline deflection decreases, what happens to the tension on the skyline?
    Increases
  22. Slings should be inspected:
    A. Once each shift
    B. At each use
    C. Every ten days
    D. Every week
    B. At each use
    (this multiple choice question has been scrambled)
  23. The square knot is used to :
    A. Tie two ropes(dry) the same size
    B. Tie two ropes (wet) the same size
    C. Tie two ropes (dry) of unequal size
    D. Tie two ropes (wet ) of unequal size
    A. tie two ropes (dry) the same size
    (this multiple choice question has been scrambled)
  24. What type of hitch produces a 360 degree contact with the load and tightens as the lift takes place?
    Double Wrap Choker Hitch
  25. What would be the approximate single line pull required to lift a 1500 lb load with block rigging with five parts of line?
    300 lbs
  26. At what angle will each sling leg be equal to that of the actual load?
    30 degrees
  27. Before every hoisting operation it should be agreed upon who?
    A. Will be the signal person
    B. is the foreman
    C. is the Competent person
    D. Keep of equipment and time
    A. Will be the signal Person
    (this multiple choice question has been scrambled)
  28. What is the lay length of wire rope?
    It is the straight linear distance of one strand as it makes a complete revolution.
  29. How is wire rope measured?
    Across the diameter at its widest point
  30. What is the rule of Thumb WLL (SWL) formula for finding the WLL for a wire rope sling?
    Dx 45 / 5 = WLL(SWL) in tons
  31. A choker hitch is rated at what percent of a single vertical hitch?
    75%
  32. What is the sling load angle factor at 30 degrees?
    2.00
  33. What is the sling load angle Factor at 45 degrees?
    1.414
  34. What is the sling load angle factor at 60 degrees?
    1.155
  35. What are the two main types of Wire Rope Clips?
    • U-Bolt Type
    • Fist Grip Type, or J clip
  36. What is the spacing Rule of Thumb for Wire rope clips?
    • the diameter of the rope x 6
    • Dx6
  37. All hooks should be made from forged steel and equipped with what?
    safety Latches
  38. Cheek Weights are found where?
    on Crane Blocks
  39. What is fleet angle?
    Fleet angle is the off center angle from the outside wire rope wrap on a drum to the working sheave.
  40. What is the safety factor of Chain Falls / Come- Alongs?
    4:1
  41. What are three types of Jacks?
    • Ratchet
    • Screw
    • Hydraulic

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