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OSHA 10-Hour Construction Review practice questions

229 free questions with answers and explanations.

Practice test
  1. 201.A worker is installing rebar on a construction site. This task involves walking over uneven surfaces with potential for punctures from exposed rebar ends and impact from dropped tools. Which combination of foot protection features would be most appropriate for this worker?Personal Protective Equipment (PPE)
  2. 202.A construction crew is working in a trench that is 8 feet deep. The soil has been classified as Type C. What is the minimum required horizontal distance from the edge of the excavation that excavated materials (spoil piles) must be kept?Excavations
  3. 203.A worker is installing a new sewer line in a trench that is 9 feet deep. The trench has been properly shored, but the worker notices a strong, unusual odor emanating from the excavation. Which of the following is the immediate and most appropriate action the worker should take?Excavations
  4. 204.An excavation is planned near an existing building foundation. Which of the following is the most important consideration to prevent undermining the adjacent structure?Excavations
  5. 205.According to OSHA, what is the maximum depth at which a trench can be excavated without requiring a protective system, assuming the excavation is in stable soil and no other hazards are present?Excavations
  6. 206.A trench is being excavated in soil that is mostly granular, with little to no clay content, and is easily crumbled. A competent person would most likely classify this soil as:Excavations
  7. 207.A construction crew is excavating a trench for a new pipeline. The trench is 6 feet deep, 3 feet wide, and the soil has been classified as Type C. What is the maximum allowable slope ratio for this trench if no protective system is used?Excavations
  8. 208.During an excavation inspection, a competent person observes signs of distress in the trench walls, including tension cracks several feet back from the edge and bulging at the bottom of the trench. Which type of protective system would be most appropriate to address these specific indicators of instability?Excavations
  9. 209.A worker is about to enter a trench that has been left open overnight in an area known for potential methane gas pockets. Before entry, what is the most critical step to ensure worker safety?Excavations
  10. 210.A utility crew is installing new conduit in an area where the excavation will be 7 feet deep. Due to limited space, sloping is not feasible, and the soil is considered Type C. What is the most appropriate protective system for this scenario?Excavations
  11. 211.A utility crew is installing new pipes in an existing right-of-way. They encounter a trench where the soil has been classified as Type B. What is the maximum allowable slope for this trench if no other protective system is used?Excavations
  12. 212.During a trenching operation, workers observe water seeping into the excavation and cracks forming on the trench sidewalls. Which type of protective system would be most effective in mitigating these immediate hazards and preventing a collapse?Excavations
  13. 213.A competent person is evaluating an excavation site where the soil is moist, cohesive, and exhibits an unconfined compressive strength of 0.9 tons per square foot (tsf). Based on OSHA's soil classification, how should this soil be categorized?Excavations
  14. 214.A construction project involves an excavation that is 20 feet deep. According to OSHA standards, what specific requirement applies to protective systems for excavations of this depth?Excavations
  15. 215.A trench is being excavated in soil classified as Type A. The excavation is 6 feet deep. According to OSHA standards, what is the maximum allowable slope for the sides of the trench?Excavations
  16. 216.A competent person is evaluating an excavation site. They observe a trench 7 feet deep where the soil is cohesive and has an unconfined compressive strength of 1.6 tons per square foot (tsf). How should this soil be classified according to OSHA standards?Excavations
  17. 217.A competent person is inspecting an excavation site. They observe that heavy equipment is operating near the edge of a trench, and spoil piles are placed directly at the trench lip. Which primary hazard is most likely to result from these conditions?Excavations
  18. 218.A trench shield (trench box) is being used in an excavation. What is the primary purpose of a trench shield?Excavations
  19. 219.A worker needs to enter a trench that is 5 feet deep. What is the minimum requirement for safe access and egress as per OSHA standards?Excavations
  20. 220.An excavation is being dug near a busy road with constant heavy truck traffic. The excavation is 10 feet deep and the soil is Type B. The constant vibrations from the traffic pose a significant risk. Which of the following protective system considerations is most critical in this scenario?Excavations
  21. 221.A competent person identifies a trench where a protective system is needed. The trench is 8 feet deep, and the excavation area is confined, making sloping impractical due to space constraints. What would be the most appropriate protective system for this scenario?Excavations
  22. 222.A construction worker is using a jackhammer for an extended period. The noise level at the operator's ear is measured at 100 dBA. According to OSHA, what is the maximum permissible exposure time for this worker without hearing protection?Personal Protective Equipment (PPE)
  23. 223.An employee is working on a scaffold 15 feet above the lower level. What is the minimum height requiring fall protection on a scaffold in construction, according to OSHA standards?Personal Protective Equipment (PPE)
  24. 224.A construction worker is performing tasks that involve potential exposure to falling objects, electrical hazards, and lateral impact. Which type of head protection is most appropriate for this worker?Personal Protective Equipment (PPE)
  25. 225.A worker is performing tasks that involve handling large, irregularly shaped objects with sharp edges and potential for crushing injuries. Which combination of hand protection features is most appropriate?Personal Protective Equipment (PPE)
  26. 226.A construction company receives an OSHA citation that includes a proposed penalty. The company decides to contest the citation and initiates the appeals process. Within how many working days must an employer notify OSHA of their intent to contest a citation or proposed penalty?Introduction to OSHA
  27. 227.A worker is installing insulation in an attic where there are visible signs of mold and airborne fiberglass particles. Which type of respiratory protection is the minimum required for this task?Personal Protective Equipment (PPE)
  28. 228.A construction crew is working on the third floor of a new building. They are installing structural steel beams and have created several unprotected floor openings for stairwells and elevator shafts. What is the minimum height above the lower level at which these floor openings require guarding?Focus Four Hazards
  29. 229.A worker is performing tasks that generate significant dust, such as sanding drywall and sweeping debris, in an area with good general ventilation. Which type of eye protection is most appropriate to prevent irritation and foreign objects from entering the eyes?Personal Protective Equipment (PPE)