Unit 4c (Crane Rigging Exercise)

9 Questions | By Kiewitsafe | Updated: Mar 20, 2022 | Attempts: 1158

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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