Unit 4c - Crane Rigging Exercise

9 Questions | By Kiewit | Updated: Mar 20, 2022 | Attempts: 1092

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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.

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"