Rigging Teqhniques

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clainez27
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260951
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Rigging Teqhniques
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2014-02-08 23:43:25
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Rigging
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Rigging Teqhniques
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  1. Two types of wire core designs are fiber core and independent wire rope core.
    True or False?
    True
  2. What is the percentage gain in strength using IWRC versus a fiber core wire rope?
    7.5
  3. What characteristic increases in a wire rope by using a rope with more strands and more wires in the strands?
    A.Rigidity
    B.Lubrication
    C.Flexibility
    D. Breaking Strength
    C. Flexibility
    (this multiple choice question has been scrambled)
  4. Grade 110/120 Improved Plow Steel has the highest tensile of any type of wire rope.
    True or False?
    False.
  5. A regular lay wire rope has strands and wires in the strands that:
    A. are all laid in the right hand direction
    B. are all laid in the left hand direction
    C. are laid in opposite directions
    D. are all laid in the same direction
    C. are laid in opposite directions.
    (this multiple choice question has been scrambled)
  6. Due to its tendency to unwind, which wire rope should NOT be used on single part hoisting lines?
    A. lang lay
    B. alternate lay
    C. regular lay
    D. none of the above
    A. Lang Lay
    (this multiple choice question has been scrambled)
  7. 7. a 6x19 wire rope classification could have as many as 16 to 26 wires per strand. 
    True or False?
    True
  8. Which wire rope classification is listes as non-rotating?
    A. 3 strand
    B. 35 strand
    C. 8 strand
    D. 19 strand
    B. 35 Strand
    (this multiple choice question has been scrambled)
  9. When a non-rotating rope is used in a wedge socket, care must be taken to prevent:
    A.core slippage
    B. rope from unraveling
    C. wire slippage
    D. strand slippage
    A. core slippage
    (this multiple choice question has been scrambled)
  10. A rotation resistant wire rope may have a smaller Working Load Limit(SWL) than an equal size 6X37 IWRC because:
    A. IWRC has a higher ultimate load(breaking strength)
    B. rotating resistant requires higher working load limit.
    C. both of the above.
    C. both of the above
  11. When hoisting personnel on a crane equipped with rotating resistant wire rope, what is the Design( safety) Factor required by most safety standards?
    A. 10:1
    B. 7:1
    C. 5:1
    D. 3.5:1
    A. 10:1
    (this multiple choice question has been scrambled)
  12. Newer designs of wore rope with shaped wires and triangular strands are an attempt to prevent rope damage from:
    A. multiple drum layers
    B. Cross winding
    C. Improper tensioning
    D. All of the above
    D. All of the above
  13. Referring to the number of broken wires allowed in a wire rope. The "Rule of Thumb" for determining replacement is :
    A. 3/6
    B. 2/12
    C. 4/8
    D. 2/6
    A. 3/6
    (this multiple choice question has been scrambled)
  14. When inspecting wire rope, interior broken wires and corrosion can be checked by magnetic particle testing. 
    True or False?
    True
  15. Corrosion of wire rope is usually caused from 
    A. lack of lubrication
    B. broken wires
    C. metal fatigue
    D. high speed operation
    A. Lack of lubrication
    (this multiple choice question has been scrambled)
  16. Which product below is considered a suitable lubricant to use on a wire rope?
    A. vegetable oil
    B. light mineral oil
    C. grease
    D. used crankcase oil
    B. light mineral oil
    (this multiple choice question has been scrambled)
  17. To avoid kinking wire rope when spooling it onto a drum from the shipping reel, the operator should always:
    A. allow the reel to rotate freely
    B. always suspend the reel in a vertical position
    C. keep the reel stationary
    A. allow the reel to rotate freely
    (this multiple choice question has been scrambled)
  18. What is the Rule of Thumb formula to find the Ultimate Load(breaking strength) of an IWRC wire rope?
    A. DX 10
    B. D2 X 45
    C. DX 42
    D. DX 5
    B. DX 45
    (this multiple choice question has been scrambled)
  19. When the Ultimate Load (breaking strength) of a wire rope is divided by a safety (design) factor, the result is called the :
    A. nominal strength of rope
    B. ultimate tensile load
    C. yield strength of rope
    D. working load limit(SWL)
    D. working load limit( SWL)
    (this multiple choice question has been scrambled)
  20. What happens when a wire rope is bent around a sheave or a hook?
    A. nominal strength does not change
    B. outside strands are in compression
    C. nominal strength is reduced
    D. inside strands are in tension
    C. nominal strength is reduced
    (this multiple choice question has been scrambled)
  21. A 1 inch wire rope eye sling( no thimble) lifting a load with a 1 inch shackle will be approximately how efficient?
    A. 25%
    B. 50%
    C. 100%
    D. 75%
    B. 50%
    (this multiple choice question has been scrambled)
  22. Referring to slings, the terms "Rated Capacity" or " Working Load Limit" replaces the old terminology of :
    A. safe working load
    B. breaking strength
    C. rule of thumb
    D. safety factor
    A. safe working load
    (this multiple choice question has been scrambled)
  23. Wire rope should be replaced if the wear in the outer strand wires exceeds:
    A. 1/4
    B. 1/8
    C. 1/3
    D. 1/16
    C. 1/3
    (this multiple choice question has been scrambled)
  24. What is the minimum Design (safety) Factor for general sling use?
    A. 7 to 1
    B. 10 to 1
    C. 3 to 1
    D. 5 to 1
    D. 5 to 1
    (this multiple choice question has been scrambled)
  25. With an "improved plow" wire rope sling, the preferred D/d basket hitch ratio is:
    A. 15 to 1
    B. 10 to 1
    C. 20 to 1
    D. 25 to 1
    D. 25 to 1
    (this multiple choice question has been scrambled)
  26. A 4- leg bridle sling will always carry the load weight equally on all 4 legs. 
    True or False?
    False
  27. A sling wrapped around a rectangular load in a basket is rated at the full basket hitch Working Load Limit. 
    True or False?
    False
  28. When slinging a bundle of pipe or tubing which of the following would provide the best contact between sling and load ?
    A. bridle hitch
    B. single leg choker
    C. double basket
    D. two double wrap chokers
    D. two double wrap chokers
    (this multiple choice question has been scrambled)
  29. Because all web slings are manufactured identically, the ID tag does not indicate the rated load. 
    True or False?
    False
  30. Synthetic slings can be safely used under any environmental circumstances. 
    True or False?
    False  Synthetic loses 15% of strength when wet
  31. Referring to the standard format of sling load charts, the angle between the top of the load and the sling leg is called the :
    A. vertical angle
    B. double angle
    C. horizontal angle
    D. working angle
    C. horizontal angle
    (this multiple choice question has been scrambled)
  32. Using two slings to lift a load, at what degree angle to the horizontal is the load on each sling considered to be equal to the weight of the load?
    A. 45
    B. 30
    C. 60
    D. 15
    B. 30
    (this multiple choice question has been scrambled)
  33. Calculate using the recommended safe lifting angle , the distance between the lift points connecting the load using two 12 foot slings.
    A. 6 feet
    B. 12 feet
    C. 10 feet
    D. 8 feet
    B. 12 Feet
    (this multiple choice question has been scrambled)
  34. Using the basic "Riggers Rule" (6' Rule Method),Calculate the load in pounds on each sling leg, using two 12 foot slings with a vertical distance to hook point of 8 feet , and a load of 8,000 pounds.
    A. 4000
    B. 6000
    C. 12000
    D. 8,000
    B. 6000
    (this multiple choice question has been scrambled)
  35. The standard "Riggers Rule", sling load formula can be applied to a non symmetrical shaped load lifted with 2 sling legs. 
    True or False?
    False
  36. What happens to the rigging hardware when sudden movements or shock loading occurs?
    A. no load stress if load is below the WLL
    B. decreased load stress
    C. Increased load stress
    D. load weight will decrease.
    C. increased load stress
    (this multiple choice question has been scrambled)
  37. Using a high line to lift a load inside a building does not require consultation with a structural engineer.
    True or False?
    False
  38. Which answer below is always embossed on good quality forged rigging hardware? Pick best answer
    A. diameter of pin
    B. ultimate breaking strength
    C. date of manufacture
    D. traceable code number
    D. traceable code number
    (this multiple choice question has been scrambled)
  39. Safety regulations prohibit the use of clips to make hoisting sling eyes.
    True or False?
    True
  40. Correctly installed U-bolt type wire rope clips are installed with the U portion of the clip on the :
    A. alternating up and down
    B. on the live or long end
    C. installed wither way
    D. dead or short end
    D. dead or short end
    (this multiple choice question has been scrambled)
  41. When compared to the rated size of the body of a shackle, the diameter of the pin is always
    A. same size
    B. larger than the body
    C. smaller than the body
    D. depends on manufacturer
    B. larger than the body
    (this multiple choice question has been scrambled)
  42. Shackles are only rated for their maximum capacity when used for what type of pull?
    A. 90 degree pull
    B. designed for any angle pull
    C. straight line pull
    D. 45 degree pull
    C. straight line pull
    (this multiple choice question has been scrambled)
  43. With two shackles or sling eyes in a hook, what is the suggested maximum included lifting angle?
    A. 45 degrees
    B. 90 degrees
    C. 0 degrees
    D. 180 degrees
    B. 90 degrees
    (this multiple choice question has been scrambled)
  44. A wedge socket must be attached with the load line pulling in a straight line from the :
    A. wedge
    B. shank
    C. Point
    D. pin
    D. Pin
    (this multiple choice question has been scrambled)
  45. Referring to wedge sockets, it is permitted to clip the wire rope dead end to the load line
    True or False?
    False
  46. Which type of eye-bolt should be used if there is any possibility of an angular load?
    A. shoulder type
    B. shoulder less type
    A. shoulder type
  47. It is acceptable practice to lift a load at an angle less than 45 degrees to the horizontal with an eye-bolt.  True or False?
    False
  48. Custom fabricated lifting beams or any homemade lifting device must be :
    A. designed by an engineer
    B. have the rated capacity clearly stamped
    C. be test lifted at 125%
    D. all of the above
    D. all of the above
  49. What safety requirement must be performed with a basket used to hoist personnel?
    A. proof -test lift a 125% of capacity at each new site
    B. trial lift with anticipated weight before using
    C. trial lift each time crane is relocated
    D. all of above
    D.all of the above
  50. The "Rule of Thumb" minimum for wire rope to sheave ratio is:
    A. 20 to 1
    B. 50 to 1
    C. 30 to 1
    D. 40 to 1
    A. 20 to 1
    (this multiple choice question has been scrambled)
  51. What is the mechanical advantage ratio created on the top fixed sheave of a two block hoisting system?
    A. 2 to 1
    B. 4 to 1
    C. none
    D. depends on number of sheaves
    C. none
    (this multiple choice question has been scrambled)
  52. When determining the number of parts of line needed for rigging a system, what unknown factor makes the use of a ratio chart a necessity?
    A. block weight
    B. diameter of drum
    C. friction
    D. length of wire rope
    C. friction
    (this multiple choice question has been scrambled)
  53. The main disadvantage of lace reeving is:
    A. There are reverse bonds
    B. line speed is constant
    C. blocks cannot be brought close together
    D. the blocks tilt toward each other
    D. the blocks tilt toward each other
    (this multiple choice question has been scrambled)
  54. The main advantage of a side opening snatch block is: pick best answer
    A. change direction of load
    B. ease of installing on wire rope.
    C. swivel hook
    D. change direction of wire rope
    B. ease of installing on wire rope.
    (this multiple choice question has been scrambled)
  55. With the load suspended, a single block hoisting assemble has a lead line pull of 200 pounds. If the lines are parallel, what is the load on the block?
    A. 200 pounds
    B. 100 pounds
    C. 400 pounds
    D. 600 pounds
    C. 400 pounds
    (this multiple choice question has been scrambled)
  56. When spooling wire rope from a reel to the bottom of a crane or hoist drum, the wire rope must come off which part of the reel?
    Top or Bottom?
    Bottom
  57. A hoist drum is an over-wind using right lay wire rop. where is the rope connected in relation to the hoist operator standing behind the drum?
    A. left side
    B. right side
    C. depends on the rope size
    D. could be either side
    A. Left side
    (this multiple choice question has been scrambled)
  58. If the wire rope hoist line coming off a drum is fed into a sheave, how must the sheave be positioned.
    A. aligned with the right drum flange
    B. depends on the rope lay
    C. aligned with the proper fleet angle
    D. aligned with the left drum flange
    C. aligned with the proper fleet angle.
    (this multiple choice question has been scrambled)
  59. As more wraps of wire rope are spooled onto a drum hoist( tugger) , the exerted pull on the rope will:
    A. decrease
    B. increase
    C. remain the same
    A. Decrease
    (this multiple choice question has been scrambled)
  60. Before using an air operated tugger, the air line should be blown out to remove excess moisture. True or False?
    True
  61. One advantage of a chain sling is that it can be safely shock loaded due to its elasticity. True or False?
    False
  62. Load decking chain is the type used for chain hoisting slings. True or False?
    False
  63. A matched set of chain slings with one leg longer than the others is likely an indication of :
    A. twisted links
    B. hardened links
    C. cracked links
    D. stretched links
    D. stretched links
    (this multiple choice question has been scrambled)
  64. Determine if this statement is true or false. To safely increase the capacity of a Come - A- Long, a two foot long snipe can be used.
    True or False?
    False
  65. Which of the following is Not a typial type of jack for over-the floor rigging?
    A. screw
    B. electric
    C. ratchet
    D. hydraulic
    B. electric
    (this multiple choice question has been scrambled)
  66. Which of the following could be used to move a heavy load from an outside pad into a building?
    A. roller skid
    B. steel dolly
    C. air castor
    D. all of the above
    D. all of the above
  67. The most commonly used grade of natural fiber rope is:
    A. number one grade manila
    B. number one grade nylon
    C. number one grade hemp
    D. number one grade sisal
    A. number one grade manila
    (this multiple choice question has been scrambled)
  68. Knots tied in fiber rope reduce the strength by approximately:
    A. 50%
    B. 10%
    C. 35%
    D. 25%
    A. 50%
    (this multiple choice question has been scrambled)
  69. Which splice is used when forming an eye in fiber rope?
    A. short splice
    B. side splice
    C. bowline splice
    D. long splice
    B. side splice
    (this multiple choice question has been scrambled)
  70. Which of the following can be used as a last resort emergency rescue knot?
    A. running bowline
    B. self - centering bowline
    C. spanish bowline
    D. bowling on a bight
    C. Spanish bowline
    (this multiple choice question has been scrambled)
  71. This knot is known as a "killer knot because it is often used improperly
    A. spanish bowline
    B. reef knot
    C. becket hitch
    D. bowline on the bight
    B. Reef knot
    (this multiple choice question has been scrambled)

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