Exam Practice Questions And Correct

Ohio Tower Crane Operator Certification Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• What is the primary purpose of a load chart on a tower crane?
• To determine wire rope tension
• To determine maximum allowable load at given radii
• To determine maximum allowable load at given radii
• To determine crane foundation depth

Rationale: Load charts specify how much weight the crane can safely

lift at different boom lengths and operating radii.

2. The "radius" of a lift refers to:

• The length of the boom
• The horizontal distance from the center of rotation to the load
• The height of the hook block
• The distance between the load and the operator

Rationale: Lift radius is the horizontal distance from the crane’s

center of rotation to the load. 1 / 3

3. Increasing the radius during a lift will:

• Increase lifting capacity
• Have no effect on capacity
• Decrease lifting capacity
• Increase crane stability

Rationale: As radius increases, mechanical leverage reduces lifting

capacity.

4. Tower cranes must be supported by:

• Loose fill material
• Gravel
• A properly engineered foundation
• Asphalt

Rationale: Tower cranes require engineered foundations to safely

handle loads and wind forces.

5. The operator must stop lifting if the load chart is:

• Hard to read
• Not laminated
• Not available or not applicable to the configuration
• Not signed

Rationale: The operator must have the correct load chart for the

crane configuration before lifting.

6. Wind speed limits for tower crane operation are typically listed in:

• Wire rope manual 2 / 3

• Manufacturer’s specifications

C. OSHA CFR 1910

• Rigger handbook

Rationale: Maximum wind speeds are specified by the crane

manufacturer.

7. If the wind increases beyond safe operation limits:

• Continue lifting slowly
• Lower the load to half capacity
• Cease lifting and secure the crane
• Boom down

Rationale: High winds increase load swing and tipping risk. Crane

must be secured.

8. A "freestanding" tower crane is supported by:

• Counterweights only
• Its base foundation without external ties
• Guy wires
• Wall ties only

Rationale: Freestanding cranes rely solely on their base foundation

up to a certain allowable height.

9. A climbing (self-raising) tower crane increases height by:

• Adding more boom sections
• Inserting mast sections with a climbing frame
• Lowering the foundation
• / 3