Rigger Level I Certification practice exam 1

Rigger Level I Certification practice exam 1 Questions and correct Answers (Verified Answers) with Rationales (based on NCCCO and industry standards)

• What is the primary role of a Rigger Level I?
• To supervise all crane lifts
• To perform rigging tasks under the direction of a qualified person
• To operate mobile cranes
• To engineer lift plans

Rationale: A Rigger Level I is qualified to perform basic rigging tasks under

supervision, not to operate cranes or supervise lifts.

• Which of the following is NOT a basic responsibility of a Rigger Level I?
• Inspect rigging hardware
• Identify rigging hazards
• Determine complex center of gravity for off-center loads
• Select appropriate slings for a routine lift

Rationale: Determining the center of gravity for complex, off-center loads

exceeds the Rigger Level I scope and is for more advanced riggers. 1 / 3

• When inspecting a wire rope sling, which of the following is cause for removal

from service?

• Slight discoloration
• Ten randomly distributed broken wires in one rope lay
• A missing tag
• Light surface rust

Rationale: Ten or more broken wires in one lay is grounds for removal as per

OSHA standards (29 CFR 1910.184).

• What is the D/d ratio?
• The difference between diameter and depth
• The ratio of the diameter of the load to the diameter of the sling
• The number of drops to diameter
• Distance between drifts

Rationale: The D/d ratio compares the diameter of the load (D) to the diameter of the sling (d), affecting sling efficiency.

• What effect does a sling angle less than 90° have on the sling tension?
• Reduces it
• Increases it
• Has no effect
• Equalizes tension 2 / 3

Rationale: As sling angle decreases, tension increases. At 30°, tension can double compared to a vertical lift.

• Which type of hitch is best for lifting loose or irregularly shaped loads?
• Vertical hitch
• Choker hitch
• Basket hitch
• Double basket hitch

Rationale: Choker hitches help secure loose or irregular loads and provide better grip.

• A vertical hitch using one sling is rated at 1,000 lbs. What is the capacity if the

same sling is used in a basket hitch?

• 750 lbs
• 1,000 lbs
• 2,000 lbs
• 1,500 lbs

Rationale: A basket hitch doubles the load capacity of a single vertical hitch,

assuming proper rigging and angles.

• What information must be included on a sling identification tag?
• Serial number only
• Color code
• / 3