Unit 4c - Crane Rigging Exercise

9 Questions | Total Attempts: 935

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Unit 4c - Crane Rigging Exercise

This quiz is based on the Kiewit Rigging Triangle training module. This should provide a little challenge to your rigging capabilities. Grab a calculator and some scrap paper, best of luck!The Safety Dept.


Questions and Answers
  • 1. 
    What would be the most preferred sling angle?
    • A. 

      65 degrees

    • B. 

      5 degrees

    • C. 

      45 degrees

    • D. 

      30 degrees

  • 2. 
    • A. 

      "17 feet; 8,460Pounds; 172-5/8 inches; 133inches; 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"

  • 3. 
      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"

  • 4. 
    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"

  • 5. 
    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"

  • 6. 
    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"

  • 7. 
    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%

  • 8. 
    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

  • 9. 
    • 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"