Advance Rigger Test Questions & Correct Answers 2026/2027 with
Detailed Rationales | Complete Exam-Style Questions | Graded A+
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SECTION I: Rigging Principles and Load Calculations
Question 1
A rigger is tasked with lifting a 20-ton load using a two-leg wire rope sling bridle. Each
sling leg is rigged at a 45-degree angle from the horizontal. What is the approximate
tension in each sling leg?
A. 5.0 tons
B. 7.1 tons
C. 10.0 tons
D. 14.1 tons
Correct Answer: D
Rationale: Option D is correct because the tension in each sling leg is calculated by
dividing the load share by the sine of the sling angle from horizontal. Tension = (20 tons
÷ 2) ÷ sin(45°) = 10 ÷ 0.707 = 14.14 tons. The load angle factor significantly increases
the tension compared to a vertical lift.
Question 2
A rectangular steel plate weighs 12,000 lbs and measures 8 feet by 6 feet. The center of
gravity is located at the geometric center. If the plate is lifted using two vertical chokers
at opposite corners, what is the load on each choker?
A. 4,000 lbs
B. 6,000 lbs
C. 8,000 lbs
D. 12,000 lbs
Correct Answer: B
,Rationale: Option B is correct because with the center of gravity at the geometric center
and two-point lifting, the load is distributed equally between the two lifting points. Each
choker supports 12,000 lbs ÷ 2 = 6,000 lbs.
Question 3
A load of 8 tons is to be lifted using a four-leg chain sling. The load's center of gravity is
centered, and all legs are rigged at a 60-degree angle from the horizontal. Assuming
ideal load distribution, what is the tension in each leg?
A. 1.33 tons
B. 1.54 tons
C. 2.31 tons
D. 4.62 tons
Correct Answer: C
Rationale: Option C is correct because each leg theoretically carries one-fourth of the
load (2 tons), and the sling angle factor increases the tension. Tension = (8 tons ÷ 4) ÷
sin(60°) = 2 ÷ 0.866 = 2.31 tons per leg.
Question 4
A rigger needs to determine the weight of a concrete block that measures 4 feet by 3
feet by 2 feet. Concrete weighs approximately 150 lbs per cubic foot. What is the total
weight of the block?
A. 1,800 lbs
B. 2,400 lbs
C. 3,600 lbs
D. 4,500 lbs
Correct Answer: C
Rationale: Option C is correct because the volume is 4 × 3 × 2 = 24 cubic feet.
Multiplying by the unit weight of concrete: 24 × 150 lbs/cubic foot = 3,600 lbs.
Question 5
, When calculating the tension in a sling leg, the sling angle is measured from which
reference plane in standard rigging practice?
A. The vertical plane
B. The horizontal plane
C. The plane of the load
D. The crane boom centerline
Correct Answer: B
Rationale: Option B is correct because standard rigging practice measures the sling
angle from the horizontal plane. This convention is used universally in load angle factor
calculations and sling capacity charts published under ASME B30.9.
Question 6
A 10-ton load is lifted using a two-leg bridle with each leg at a 30-degree angle from the
horizontal. What is the tension in each leg?
A. 5.0 tons
B. 7.5 tons
C. 10.0 tons
D. 20.0 tons
Correct Answer: C
Rationale: Option C is correct because the tension in each leg equals the load share
divided by the sine of the angle. Tension = (10 tons ÷ 2) ÷ sin(30°) = 5 ÷ 0.5 = 10.0 tons.
At shallow angles, the tension in each leg equals the full load share divided by 0.5,
doubling the apparent load.
Question 7
The load angle factor for a sling rigged at 45 degrees from the horizontal is
approximately:
A. 1.00
B. 1.15
Detailed Rationales | Complete Exam-Style Questions | Graded A+
Pass Guaranteed
SECTION I: Rigging Principles and Load Calculations
Question 1
A rigger is tasked with lifting a 20-ton load using a two-leg wire rope sling bridle. Each
sling leg is rigged at a 45-degree angle from the horizontal. What is the approximate
tension in each sling leg?
A. 5.0 tons
B. 7.1 tons
C. 10.0 tons
D. 14.1 tons
Correct Answer: D
Rationale: Option D is correct because the tension in each sling leg is calculated by
dividing the load share by the sine of the sling angle from horizontal. Tension = (20 tons
÷ 2) ÷ sin(45°) = 10 ÷ 0.707 = 14.14 tons. The load angle factor significantly increases
the tension compared to a vertical lift.
Question 2
A rectangular steel plate weighs 12,000 lbs and measures 8 feet by 6 feet. The center of
gravity is located at the geometric center. If the plate is lifted using two vertical chokers
at opposite corners, what is the load on each choker?
A. 4,000 lbs
B. 6,000 lbs
C. 8,000 lbs
D. 12,000 lbs
Correct Answer: B
,Rationale: Option B is correct because with the center of gravity at the geometric center
and two-point lifting, the load is distributed equally between the two lifting points. Each
choker supports 12,000 lbs ÷ 2 = 6,000 lbs.
Question 3
A load of 8 tons is to be lifted using a four-leg chain sling. The load's center of gravity is
centered, and all legs are rigged at a 60-degree angle from the horizontal. Assuming
ideal load distribution, what is the tension in each leg?
A. 1.33 tons
B. 1.54 tons
C. 2.31 tons
D. 4.62 tons
Correct Answer: C
Rationale: Option C is correct because each leg theoretically carries one-fourth of the
load (2 tons), and the sling angle factor increases the tension. Tension = (8 tons ÷ 4) ÷
sin(60°) = 2 ÷ 0.866 = 2.31 tons per leg.
Question 4
A rigger needs to determine the weight of a concrete block that measures 4 feet by 3
feet by 2 feet. Concrete weighs approximately 150 lbs per cubic foot. What is the total
weight of the block?
A. 1,800 lbs
B. 2,400 lbs
C. 3,600 lbs
D. 4,500 lbs
Correct Answer: C
Rationale: Option C is correct because the volume is 4 × 3 × 2 = 24 cubic feet.
Multiplying by the unit weight of concrete: 24 × 150 lbs/cubic foot = 3,600 lbs.
Question 5
, When calculating the tension in a sling leg, the sling angle is measured from which
reference plane in standard rigging practice?
A. The vertical plane
B. The horizontal plane
C. The plane of the load
D. The crane boom centerline
Correct Answer: B
Rationale: Option B is correct because standard rigging practice measures the sling
angle from the horizontal plane. This convention is used universally in load angle factor
calculations and sling capacity charts published under ASME B30.9.
Question 6
A 10-ton load is lifted using a two-leg bridle with each leg at a 30-degree angle from the
horizontal. What is the tension in each leg?
A. 5.0 tons
B. 7.5 tons
C. 10.0 tons
D. 20.0 tons
Correct Answer: C
Rationale: Option C is correct because the tension in each leg equals the load share
divided by the sine of the angle. Tension = (10 tons ÷ 2) ÷ sin(30°) = 5 ÷ 0.5 = 10.0 tons.
At shallow angles, the tension in each leg equals the full load share divided by 0.5,
doubling the apparent load.
Question 7
The load angle factor for a sling rigged at 45 degrees from the horizontal is
approximately:
A. 1.00
B. 1.15
