ETCP ARENA RIGGING MASTER EXAM
2026: 250 EXPERT Q&A | STRUCTURAL
MATH & SAFETY GUIDE
ETCP Arena Rigger Practice Exam
1. What is the standard design factor (Safety Factor) typically
required for overhead lifting hardware used in the
entertainment industry?
A. 3:1
B. 5:1
C. 8:1
D. 10:1
Rationale: The 5:1 design factor is the industry standard (ANSI E1.1)
for hardware to account for dynamic loading and minor wear.
2. Which type of hitch reduces the Working Load Limit (WLL)
of a wire rope sling by approximately 50%?
A. Vertical hitch
B. Basket hitch
C. Choker hitch
D. Bridle hitch
Rationale: A choker hitch creates a sharp bend and restricts the flow
of wires, significantly reducing the sling's capacity.
3. In arena rigging, a "Dead Hang" refers to a point that is:
A. Attached to two different beams.
B. Hung vertically directly below a single attachment point.
C. A motor that has failed.
D. A point used only for cable management.
Rationale: A dead hang is a direct vertical connection between the
load and the support structure.
4. When using a screw pin anchor shackle, the pin should be:
A. Left one quarter-turn loose.
B. Hand-tight only.
C. Tightened fully and "backed off" slightly (or moused for
,long-term use).
D. Tightened with a wrench until it cannot move.
Rationale: Pins should be seated fully; in permanent installs, they are
"moused" with wire to prevent backing out due to vibration.
5. What is the effect of an interior angle (the angle between the
sling legs) of 120 degrees on a two-leg bridle?
A. Each leg carries 50% of the load.
B. Each leg carries 75% of the load.
C. Each leg carries 100% of the load.
D. Each leg carries 200% of the load.
Rationale: At 120 degrees, the tension in each sling leg is exactly
equal to the total weight of the load.
6. Which grade of chain is the ONLY grade approved for
overhead lifting?
A. Grade 30 (Proof Coil)
B. Grade 43 (High Test)
C. Grade 70 (Transport)
D. Grade 80 or 100 (Alloy)
Rationale: Only Alloy Steel chain (Grade 80/100) is engineered
with the elongation and strength properties required for overhead
lifting.
7. A "Breast Line" is used in rigging to:
A. Support the weight of the motor.
B. Pull a hanging object laterally to a different position.
C. Increase the safety factor of a point.
D. Terminate a wire rope.
Rationale: A breast line (or lateral) is used to shift a load's position
without changing its vertical support.
8. When inspecting wire rope, "Birdcaging" is a term used to
describe:
A. Surface rust.
B. A permanent deformation where the outer strands pull
away from the core.
C. A specific type of termination.
D. Dust accumulation in the valley.
Rationale: Birdcaging is a critical failure often caused by sudden
release of tension or improper sheaves; it requires immediate removal
from service.
,9. The "Fleet Angle" for a winch drum or sheave should
generally not exceed:
A. 1.5 to 2.0 degrees
B. 5.0 degrees
C. 10.0 degrees
D. 45.0 degrees
Rationale: To prevent excessive wear and improper spooling, the fleet
angle must be kept very shallow.
10. What is the primary purpose of a "Thimble" in a wire rope
eye?
A. To make the rope look professional.
B. To protect the eye from crushing and prevent kinking of the
wires.
C. To increase the breaking strength of the rope.
D. To allow the rope to be spliced easier.
Rationale: The thimble maintains the shape of the eye and protects the
rope from friction and tight bends.
11. Which piece of hardware is used to adjust the length of a
rigging point with high precision?
A. Shackle
B. Turnbuckle
C. STAC Chain
D. Spanset
Rationale: Turnbuckles allow for fine-tuned length adjustments to
level trusses or tension bridles.
12. "Shock Loading" occurs when:
A. A motor is running at full speed.
B. A load is suddenly dropped or jerked, rapidly increasing the
dynamic force.
C. There is a lightning strike on the arena roof.
D. Too many motors are plugged into one circuit.
Rationale: Shock loading can double or triple the static weight of a
load, potentially exceeding the WLL of the hardware.
13. A "STAC" chain stands for:
A. Standard Tension Alloy Chain.
B. Special Theatrical Alloy Chain.
C. Static Tension Arena Connection.
D. Structural Truss Attachment Chain.
, Rationale: STAC chain is Grade 80 alloy chain with longer links to
allow for the passage of shackle pins.
14. When using wire rope clips (Crosbys), the U-bolt must be
placed on the:
A. Live end of the rope.
B. Dead (short) end of the rope.
C. Both ends.
D. It doesn't matter.
Rationale: The phrase "Never saddle a dead horse" reminds riggers
that the saddle goes on the live (load-bearing) end and the U-bolt on the
dead end.
15. What is the most common rope used for "Pull Lines" (hand
lines) in arena rigging?
A. Steel wire rope
B. Multifilament Polypropylene or Polyester (1/2" or 5/8")
C. Manilla rope
D. Bungee cord
Rationale: Synthetic ropes are preferred for hand lines because they
are easy on the hands and resistant to rot.
16. In a "Bridle," the horizontal distance between the two
attachment points is called the:
A. Leg
B. Span
C. Apex
D. Rise
Rationale: The span is the distance between the two beams where the
bridle is attached.
17. "Fleeting" a motor means:
A. Removing it from the truss.
B. Moving a motor along a beam to change the point's location.
C. Running the motor in reverse.
D. Speeding up the motor.
Rationale: Fleeting is the process of shifting a point laterally along its
support structure.
18. Which of the following is a "Fall Arrest" device?
A. A 5/8" shackle
B. A full-body harness and lanyard.
C. A spanset.
2026: 250 EXPERT Q&A | STRUCTURAL
MATH & SAFETY GUIDE
ETCP Arena Rigger Practice Exam
1. What is the standard design factor (Safety Factor) typically
required for overhead lifting hardware used in the
entertainment industry?
A. 3:1
B. 5:1
C. 8:1
D. 10:1
Rationale: The 5:1 design factor is the industry standard (ANSI E1.1)
for hardware to account for dynamic loading and minor wear.
2. Which type of hitch reduces the Working Load Limit (WLL)
of a wire rope sling by approximately 50%?
A. Vertical hitch
B. Basket hitch
C. Choker hitch
D. Bridle hitch
Rationale: A choker hitch creates a sharp bend and restricts the flow
of wires, significantly reducing the sling's capacity.
3. In arena rigging, a "Dead Hang" refers to a point that is:
A. Attached to two different beams.
B. Hung vertically directly below a single attachment point.
C. A motor that has failed.
D. A point used only for cable management.
Rationale: A dead hang is a direct vertical connection between the
load and the support structure.
4. When using a screw pin anchor shackle, the pin should be:
A. Left one quarter-turn loose.
B. Hand-tight only.
C. Tightened fully and "backed off" slightly (or moused for
,long-term use).
D. Tightened with a wrench until it cannot move.
Rationale: Pins should be seated fully; in permanent installs, they are
"moused" with wire to prevent backing out due to vibration.
5. What is the effect of an interior angle (the angle between the
sling legs) of 120 degrees on a two-leg bridle?
A. Each leg carries 50% of the load.
B. Each leg carries 75% of the load.
C. Each leg carries 100% of the load.
D. Each leg carries 200% of the load.
Rationale: At 120 degrees, the tension in each sling leg is exactly
equal to the total weight of the load.
6. Which grade of chain is the ONLY grade approved for
overhead lifting?
A. Grade 30 (Proof Coil)
B. Grade 43 (High Test)
C. Grade 70 (Transport)
D. Grade 80 or 100 (Alloy)
Rationale: Only Alloy Steel chain (Grade 80/100) is engineered
with the elongation and strength properties required for overhead
lifting.
7. A "Breast Line" is used in rigging to:
A. Support the weight of the motor.
B. Pull a hanging object laterally to a different position.
C. Increase the safety factor of a point.
D. Terminate a wire rope.
Rationale: A breast line (or lateral) is used to shift a load's position
without changing its vertical support.
8. When inspecting wire rope, "Birdcaging" is a term used to
describe:
A. Surface rust.
B. A permanent deformation where the outer strands pull
away from the core.
C. A specific type of termination.
D. Dust accumulation in the valley.
Rationale: Birdcaging is a critical failure often caused by sudden
release of tension or improper sheaves; it requires immediate removal
from service.
,9. The "Fleet Angle" for a winch drum or sheave should
generally not exceed:
A. 1.5 to 2.0 degrees
B. 5.0 degrees
C. 10.0 degrees
D. 45.0 degrees
Rationale: To prevent excessive wear and improper spooling, the fleet
angle must be kept very shallow.
10. What is the primary purpose of a "Thimble" in a wire rope
eye?
A. To make the rope look professional.
B. To protect the eye from crushing and prevent kinking of the
wires.
C. To increase the breaking strength of the rope.
D. To allow the rope to be spliced easier.
Rationale: The thimble maintains the shape of the eye and protects the
rope from friction and tight bends.
11. Which piece of hardware is used to adjust the length of a
rigging point with high precision?
A. Shackle
B. Turnbuckle
C. STAC Chain
D. Spanset
Rationale: Turnbuckles allow for fine-tuned length adjustments to
level trusses or tension bridles.
12. "Shock Loading" occurs when:
A. A motor is running at full speed.
B. A load is suddenly dropped or jerked, rapidly increasing the
dynamic force.
C. There is a lightning strike on the arena roof.
D. Too many motors are plugged into one circuit.
Rationale: Shock loading can double or triple the static weight of a
load, potentially exceeding the WLL of the hardware.
13. A "STAC" chain stands for:
A. Standard Tension Alloy Chain.
B. Special Theatrical Alloy Chain.
C. Static Tension Arena Connection.
D. Structural Truss Attachment Chain.
, Rationale: STAC chain is Grade 80 alloy chain with longer links to
allow for the passage of shackle pins.
14. When using wire rope clips (Crosbys), the U-bolt must be
placed on the:
A. Live end of the rope.
B. Dead (short) end of the rope.
C. Both ends.
D. It doesn't matter.
Rationale: The phrase "Never saddle a dead horse" reminds riggers
that the saddle goes on the live (load-bearing) end and the U-bolt on the
dead end.
15. What is the most common rope used for "Pull Lines" (hand
lines) in arena rigging?
A. Steel wire rope
B. Multifilament Polypropylene or Polyester (1/2" or 5/8")
C. Manilla rope
D. Bungee cord
Rationale: Synthetic ropes are preferred for hand lines because they
are easy on the hands and resistant to rot.
16. In a "Bridle," the horizontal distance between the two
attachment points is called the:
A. Leg
B. Span
C. Apex
D. Rise
Rationale: The span is the distance between the two beams where the
bridle is attached.
17. "Fleeting" a motor means:
A. Removing it from the truss.
B. Moving a motor along a beam to change the point's location.
C. Running the motor in reverse.
D. Speeding up the motor.
Rationale: Fleeting is the process of shifting a point laterally along its
support structure.
18. Which of the following is a "Fall Arrest" device?
A. A 5/8" shackle
B. A full-body harness and lanyard.
C. A spanset.
