CHST FREE Construction Health and Safety Technician Questions and Answers 3 — Questions and Answers
Question 1: Under OSHA 29 CFR 1926.502, what is the maximum free-fall distance allowed when using a personal fall arrest system?
- 4 feet
- 6 feet (Correct answer)
- 10 feet
- 12 feet
Correct answer: 6 feet
OSHA limits free-fall distance to 6 feet when using a personal fall arrest system.
Question 2: A competent person conducting a daily excavation inspection discovers tension cracks parallel to the trench wall. What is the FIRST action to take?
- Install additional shoring
- Remove all workers from the trench immediately (Correct answer)
- Increase trench width by benching
- Document the cracks and continue monitoring
Correct answer: Remove all workers from the trench immediately
Tension cracks parallel to a trench wall are a sign of imminent cave-in, requiring immediate worker evacuation.
Question 3: Which OSHA standard governs the hazard communication program for construction worksites?
- 29 CFR 1926.21
- 29 CFR 1926.59 (Correct answer)
- 29 CFR 1910.120
- 29 CFR 1926.103
Correct answer: 29 CFR 1926.59
29 CFR 1926.59 is the OSHA Hazard Communication standard applicable to construction.
Question 4: When is a safety data sheet (SDS) Section 8 most relevant during a construction task?
- Selecting PPE and engineering controls for chemical exposure (Correct answer)
- Determining disposal procedures for hazardous waste
- Identifying first aid measures after accidental ingestion
- Reviewing the chemical's physical and chemical properties
Correct answer: Selecting PPE and engineering controls for chemical exposure
Section 8 (Exposure Controls/Personal Protection) directly guides PPE selection and engineering controls.
Question 5: According to OSHA 1926 Subpart P, what soil classification requires the steepest allowable slope (least excavation angle)?
- Type A
- Type B
- Type C
- Stable rock (Correct answer)
Correct answer: Stable rock
Stable rock can be cut vertically (90°), which is the steepest permissible slope.
Question 6: A crane operator must vacate the cab and ground the equipment during an electrical storm when lightning is within how many miles?
- 5 miles
- 10 miles (Correct answer)
- 15 miles
- 20 miles
Correct answer: 10 miles
Industry guidelines (ASME B30.5) recommend grounding crane operations when lightning is within 10 miles.
Question 7: What is the primary purpose of a Job Hazard Analysis (JHA)?
- To assign blame after an incident occurs
- To identify hazards before a task begins and establish controls (Correct answer)
- To satisfy OSHA recordkeeping requirements
- To train new employees on company policies
Correct answer: To identify hazards before a task begins and establish controls
A JHA proactively identifies hazards associated with specific job tasks so controls can be implemented before work starts.
CHST FREE Construction Health and Safety Technician Questions and Answers 3
Under OSHA 29 CFR 1926.502, what is the maximum free-fall distance allowed when using a personal fall arrest system?