RIGGING TEST QUESTIONS AND ANSWERS
What Formulas do you use to find friction loss on sheaves? - Answers- P-Plain bore -
10%
B-Bronze brushing - 5%
R-Roller bearing - 3%
What are the four basic end fittings for turn buckles? - Answers- Eye, Clevis, Stub, &
Hook
What are the three primary designs that allow sheaves to turn? - Answers- Plain bore,
Busting, & Bearings
U-shaped fitting where rigging hardware is attached, that can pivot 180 degrees, a bail
pin and a socket head cap screw? - Answers- Bail
FC
SC
IWRC - Answers- Fiber Core
Strand Core
Independent Wire Rope Core
T/F?
The D/d ratio for a braided sling is approximately 20 times the component wire rope
diameter? - Answers- True
What are the 3 basic designs of wire rope slings? - Answers- Single-part, Braided, &
Multipart grommet
Which materials are most commonly used to manufacture a synthetic web sling? -
Answers- Polyester & Nylon
Can you place spacers between swivel hoist rings? - Answers- No
What is the most important factor to the success of any rigging operations? - Answers-
Safety
T/F?
Because of their construction, braided wire rope slings are heavy and inflexible? -
Answers- False
Are shims okay under eyebolts? - Answers- Yes, as long the eyebolt is tight and
properly inline
T/F?
, Synthetic web slings twist during hoisting? - Answers- False
What are the 3 components of wire rope? - Answers- Core, Strands, Wire
A chain is usually removed from service when wear reduces the diameter of any link by
approximately ______ or more? - Answers- 10%
T/F?
Excessive heat can reduce wire strength? - Answers- True
T/F?
The outer surface of 8x19 wire rope is smoother because it has more strands? -
Answers- True
When does most chain stretch? - Answers- At 90% of break strength
How is the gross weight of a load calculated? - Answers- The gross weight of object
being picked and total weight of rigging hardware (everything under the hook)
6x7 standard coarse laid - Answers- Guy line wire
T/F?
Pre-formed wire is rarely used in wire ropes? - Answers- False
How is a turnbuckle sized? - Answers- Diameter of the threads
Why do top and bottom hooks swivel? - Answers- To avoid binding
Why are synthetic slings able to absorb heavy shock loads? - Answers- Because they
stretch
T/F?
While the equipment used to move and place heavy objects has evolved over the
centuries, the application of basic rigging knowledge and technologies has changed
very little? - Answers- True
Eyebolt FoS. - Answers- 5:1
What is the purpose of cleaning a chain before beginning inspection? - Answers- To
reveal any defects hidden by the grease/dirt
Name 4 things a rigger should look for during a visual chain inspection. - Answers-
Twist, Worn, Stretch, or Gouges
T/F?
What Formulas do you use to find friction loss on sheaves? - Answers- P-Plain bore -
10%
B-Bronze brushing - 5%
R-Roller bearing - 3%
What are the four basic end fittings for turn buckles? - Answers- Eye, Clevis, Stub, &
Hook
What are the three primary designs that allow sheaves to turn? - Answers- Plain bore,
Busting, & Bearings
U-shaped fitting where rigging hardware is attached, that can pivot 180 degrees, a bail
pin and a socket head cap screw? - Answers- Bail
FC
SC
IWRC - Answers- Fiber Core
Strand Core
Independent Wire Rope Core
T/F?
The D/d ratio for a braided sling is approximately 20 times the component wire rope
diameter? - Answers- True
What are the 3 basic designs of wire rope slings? - Answers- Single-part, Braided, &
Multipart grommet
Which materials are most commonly used to manufacture a synthetic web sling? -
Answers- Polyester & Nylon
Can you place spacers between swivel hoist rings? - Answers- No
What is the most important factor to the success of any rigging operations? - Answers-
Safety
T/F?
Because of their construction, braided wire rope slings are heavy and inflexible? -
Answers- False
Are shims okay under eyebolts? - Answers- Yes, as long the eyebolt is tight and
properly inline
T/F?
, Synthetic web slings twist during hoisting? - Answers- False
What are the 3 components of wire rope? - Answers- Core, Strands, Wire
A chain is usually removed from service when wear reduces the diameter of any link by
approximately ______ or more? - Answers- 10%
T/F?
Excessive heat can reduce wire strength? - Answers- True
T/F?
The outer surface of 8x19 wire rope is smoother because it has more strands? -
Answers- True
When does most chain stretch? - Answers- At 90% of break strength
How is the gross weight of a load calculated? - Answers- The gross weight of object
being picked and total weight of rigging hardware (everything under the hook)
6x7 standard coarse laid - Answers- Guy line wire
T/F?
Pre-formed wire is rarely used in wire ropes? - Answers- False
How is a turnbuckle sized? - Answers- Diameter of the threads
Why do top and bottom hooks swivel? - Answers- To avoid binding
Why are synthetic slings able to absorb heavy shock loads? - Answers- Because they
stretch
T/F?
While the equipment used to move and place heavy objects has evolved over the
centuries, the application of basic rigging knowledge and technologies has changed
very little? - Answers- True
Eyebolt FoS. - Answers- 5:1
What is the purpose of cleaning a chain before beginning inspection? - Answers- To
reveal any defects hidden by the grease/dirt
Name 4 things a rigger should look for during a visual chain inspection. - Answers-
Twist, Worn, Stretch, or Gouges
T/F?
