Unit 4c (Crane Rigging Exercise)

9 Questions | Total Attempts: 989

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Unit 4c (Crane Rigging Exercise)

This quiz is based on the Kiewit Rigging Triangle training module.   This should provide a modest challenge to your rigging capabilities.   Grab a calculator and some scrap paper.   Best of luck! You must complete Unit 4C (Crane Rigging Exercise) with a score of 90% or higher.   This will conclude all quizzes in Unit 4.


Questions and Answers
  • 1. 
    If you are picking something that would result in a choker angle of 40 degrees, how much of the rated capacity can you use?
    • A. 

      49%

    • B. 

      62%

    • C. 

      74%

    • D. 

      87%

  • 2. 
    If your L is 10 feet and your H is 8 feet what is your Load Factor?
    • A. 

      0.8

    • B. 

      1.25

    • C. 

      1.67

    • D. 

      1.22

  • 3. 
    What would be the most preferred sling angle?
    • A. 

      65 Degrees

    • B. 

      5 Degrees

    • C. 

      45 Degrees

    • D. 

      30 Degrees

  • 4. 
    Calculate the load per sling, sling size and shackle size.
    • A. 

      7000, 5/8, 3/4

    • B. 

      8085, 5/8, 3/4

    • C. 

      14000, 5/8, 3/4

    • D. 

      7000, 3/4, 7/8

    • E. 

      8085, 3/4, 7/8

  • 5. 
    Calculate the load per sling, sling size, and shackle size. 
    • A. 

      25,000 pounds; 1-1/4" sling; 1-3/8" shackle

    • B. 

      25,000 pounds; 1-3/8" sling; 1-1/2" shackle

    • C. 

      12,500 pounds; 1" sling; 1-1/8" shackle

    • D. 

      12,500 pounds; 7/8" sling; 1" shackle

  • 6. 
      Calculate the load per sling, sling size and shackle size for A B and C.  (Choose the two correct answers.)
    • A. 

      Side A = 8,484 pounds; 7/8 sling; 1 shackle C = 7/8 shackle

    • B. 

      Side B = 5,000 pounds; 7/8 sling; 1 shackle C = 7/8 shackle

    • C. 

      Side A = 8,484 pounds; 3/4 sling; 7/8 shackle C = 7/8 shackle

    • D. 

      Side B = 5,000 pounds; 3/4 sling; 7/8 shackle C = 7/8 shackle

  • 7. 
    What is the tension or load going into the slings?
    • A. 

      5,780 Pounds

    • B. 

      5,000 Pounds

    • C. 

      5,465 Pounds

    • D. 

      5,825 Pounds

  • 8. 
      Calculate the share of the load, sling size, and shackle size for A and B.  (Select the 2 correct answers.)
    • A. 

      Side A = 2,800; 5,600; 5/8 sling; 3/4 shackle

    • B. 

      Side A = 7,200; 8,640; 3/4 sling; 7/8 shackle

    • C. 

      Side B = 7,200; 8,640; 3/4 sling; 7/8 shackle

    • D. 

      Side B = 2,800; 5,600; 5/8 sling; 3/4 shackle

  • 9. 
    • A. 

      17 feet; 8,460 Pounds; 172-5/8 inches; 133 inches; 30 degree; 13,050 pounds

    • B. 

      17 feet; 8,700 Pounds; 176-5/8 inches; 124 inches; 35 degree; 13,050 pounds

    • C. 

      16 feet; 8,700 Pounds; 176-5/8 inches; 124 inches; 35 degree; 13,050 pounds