5.0 Focus Four: Struck-By OSHA 30 Practice Quiz
45 exam-style questions covering 7% of the OSHA 30 exam. Instant feedback on every answer, progress tracking, no signup required.
This domain is part of the OSHA 30-Hour Construction practice test. Each question is tagged by exam objective and difficulty so you can drill exactly the areas you need.
Sample Questions
Which condition is a common struck-by hazard on a construction site?
- A. Workers walking beneath an active overhead lift
- B. A clearly marked pedestrian route away from lifting operations
- C. A stored load secured against movement
- D. A barricaded area around active equipment
Workers below suspended or moving loads can be struck if the load shifts, falls, or swings. This is the correct answer.
On site, which condition is a common struck-by hazard on a construction site?
- A. On site, workers walking beneath an active overhead lift
- B. On site, a stored load secured against movement
- C. On site, a barricaded area around active equipment
- D. On site, a clearly marked pedestrian route away from lifting operations
Workers below suspended or moving loads can be struck if the load shifts, falls, or swings. This is the correct answer.
A worker is positioned beside a dump truck that is backing up. What is the main hazard?
- A. A fall through a roof opening
- B. Being struck by the moving vehicle
- C. An electrical shock from temporary lighting
- D. A chemical burn from wet concrete
Backing vehicles can strike workers when visibility, communication, or separation controls are inadequate. This is the correct answer.
Which action best addresses struck-by hazard recognition? A worker is positioned beside a dump truck that is backing up. What is the main hazard?
- A. On site, an electrical shock from temporary lighting
- B. On site, being struck by the moving vehicle
- C. On site, a chemical burn from wet concrete
- D. On site, a fall through a roof opening
Backing vehicles can strike workers when visibility, communication, or separation controls are inadequate. This is the correct answer.
On site, a worker is positioned beside a dump truck that is backing up. What is the main hazard?
- A. During the shift, a chemical burn from wet concrete
- B. During the shift, being struck by the moving vehicle
- C. During the shift, a fall through a roof opening
- D. During the shift, an electrical shock from temporary lighting
Backing vehicles can strike workers when visibility, communication, or separation controls are inadequate. This is the correct answer.
During struck-by hazard planning on a construction site, which task creates a struck-by hazard that should be controlled before work starts?
- A. Storing tools in a closed toolbox
- B. Reviewing a safety plan in a trailer
- C. Cutting material where flying fragments can hit nearby workers
- D. Walking through a clean break area
Flying particles and fragments are struck-by hazards that need guarding, distance, and eye or face protection. This is the correct answer.
Which task creates a struck-by hazard that should be controlled before work starts?
- A. On site, reviewing a safety plan in a trailer
- B. On site, walking through a clean break area
- C. On site, cutting material where flying fragments can hit nearby workers
- D. On site, storing tools in a closed toolbox
Flying particles and fragments are struck-by hazards that need guarding, distance, and eye or face protection. This is the correct answer.
Which worker is exposed to a struck-by hazard?
- A. A worker outside a marked equipment exclusion zone
- B. A worker wearing required eye protection while grinding behind a guard
- C. A worker using a hand tool away from traffic and lifting operations
- D. A worker standing inside the swing radius of rotating equipment
Rotating equipment can strike workers if swing areas are not controlled. This is the correct answer.
Key Terms in This Domain
- Struck-by hazard: Injury caused by forcible contact between a person and a flying, falling, swinging, or rolling object
- Internal traffic control plan: Site plan that separates pedestrians from vehicles and equipment paths
- Hazard prevention and control: Hierarchy: elimination, substitution, engineering controls, administrative controls, PPE, applied in order
- Job hazard analysis (JHA): Step-by-step task review that identifies hazards and specifies controls before work begins
- Pre-task plan: Daily/shift planning document covering scope, hazards, controls, PPE, and emergency response
- Qualified person (electrical): Worker trained in construction or operation of electric equipment and the hazards involved
- High-visibility apparel: ANSI/ISEA 107 garments worn around traffic and equipment to make workers visible
- Caught-in hazard: Injury caused when a worker is squeezed, caught, crushed, pinched, or compressed between objects
- Demolition: 29 CFR 1926 Subpart T: engineering survey before work; controls for falls, dust, hazardous materials, and structural collapse
- General duty clause: OSH Act Section 5(a)(1): employer must furnish a workplace free from recognized hazards likely to cause death or serious physical harm
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Other OSHA 30 Domains
- 1.0 Introduction to OSHA
- 2.0 Managing Safety and Health
- 3.0 Focus Four: Falls
- 4.0 Focus Four: Electrocution
- 6.0 Focus Four: Caught-In or Between
- 7.0 Personal Protective Equipment
- 8.0 Health Hazards in Construction
- 9.0 Stairways and Ladders
- 10.0 Elective Construction Topics
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