[COLORADO OSHA CONSTRUCTION SAFETY CERTIFICATION
STUDY GUIDE] – QUESTIONS AND ANSWERS | VERIFIED AND
WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE | EXAM PREP | STUDY GUIDE |
PRACTICE TEST
1. A construction supervisor notices that several workers are not wearing eye protection
while using a concrete saw. What is the supervisor’s MOST appropriate immediate action?
A. Wait until the next safety meeting to address the issue
B. Shut down the task and require proper PPE before work continues
C. Document the violation but allow work to continue
D. Ask workers if they believe eye protection is necessary
════════════════════
Correct Answer: B. Shut down the task and require proper PPE before work continues
Rationale:
Eye protection is mandatory when workers are exposed to flying particles and debris from
equipment such as concrete saws. OSHA requires employers to enforce PPE use immediately
when hazards are identified. Waiting or merely documenting the issue fails to correct the
immediate danger.
════════════════════
2. Which OSHA regulation primarily governs fall protection requirements in construction?
A. 29 CFR 1926 Subpart M
B. 29 CFR 1910 Subpart I
C. 29 CFR 1904
D. 29 CFR 1926 Subpart P
════════════════════
Correct Answer: A. 29 CFR 1926 Subpart M
Rationale:
29 CFR 1926 Subpart M specifically addresses fall protection requirements in construction
activities. Subpart P relates to excavations, while 1910 standards generally apply to general
industry.
,════════════════════
3. A worker on a scaffold 12 feet above ground is not tied off because the task will “only take
a minute.” What is the BEST response?
A. Allow the task if another worker observes nearby
B. Permit the work if weather conditions are calm
C. Stop the work because fall protection is required regardless of task duration
D. Require only a hard hat since the worker is experienced
════════════════════
Correct Answer: C. Stop the work because fall protection is required regardless of task
duration
Rationale:
OSHA fall protection requirements are based on exposure to hazards, not task duration.
Construction workers exposed to falls of 6 feet or more generally require fall protection.
Experience does not eliminate the hazard.
════════════════════
4. What is the PRIMARY purpose of a Job Hazard Analysis (JHA)?
A. To reduce project costs
B. To identify hazards before work begins
C. To determine employee wages
D. To replace OSHA inspections
════════════════════
Correct Answer: B. To identify hazards before work begins
Rationale:
A Job Hazard Analysis systematically evaluates tasks to identify potential hazards and
determine appropriate controls before work starts. It supports proactive risk management
rather than reacting after incidents occur.
════════════════════
5. Which type of fire extinguisher should be used on energized electrical equipment?
A. Class A
B. Class K
C. Water extinguisher
D. Class C
,════════════════════
Correct Answer: D. Class C
Rationale:
Class C fire extinguishers are designed for energized electrical fires. Water-based extinguishers
can conduct electricity and increase the risk of electrocution.
════════════════════
6. During an excavation project, a competent person identifies cracks forming near the trench
edge. What should happen NEXT?
A. Continue work while monitoring conditions
B. Increase worker production to finish faster
C. Remove employees from the trench until hazards are corrected
D. Ignore the cracks if the trench is less than 5 feet deep
════════════════════
Correct Answer: C. Remove employees from the trench until hazards are corrected
Rationale:
Cracks near trench edges may indicate an impending cave-in hazard. OSHA requires workers
to be removed from hazardous excavations until corrective measures such as shoring or
sloping are implemented.
════════════════════
7. Which statement BEST describes the purpose of Lockout/Tagout procedures?
A. To identify employee attendance
B. To prevent unexpected energization of equipment
C. To increase machine efficiency
D. To monitor electrical consumption
════════════════════
Correct Answer: B. To prevent unexpected energization of equipment
Rationale:
Lockout/Tagout procedures protect workers from hazardous energy by ensuring machinery
cannot unexpectedly start during servicing or maintenance activities.
════════════════════
, 8. A contractor discovers asbestos-containing material during renovation work. What is the
MOST appropriate first step?
A. Continue work using dust masks
B. Wet the material and proceed carefully
C. Remove the material immediately without testing
D. Stop work and arrange for proper assessment and abatement procedures
════════════════════
Correct Answer: D. Stop work and arrange for proper assessment and abatement procedures
Rationale:
Asbestos exposure presents serious respiratory hazards. OSHA and EPA requirements
mandate proper assessment and controlled abatement procedures by qualified personnel
before work continues.
════════════════════
9. What is the MINIMUM safe distance generally required between construction equipment
and energized overhead power lines up to 50 kV?
A. 3 feet
B. 5 feet
C. 10 feet
D. 20 feet
════════════════════
Correct Answer: C. 10 feet
Rationale:
OSHA generally requires maintaining at least 10 feet of clearance from overhead power lines
up to 50 kV to prevent accidental contact and electrocution hazards.
════════════════════
10. Which of the following is considered the MOST effective hazard control method?
A. Personal protective equipment
B. Administrative controls
C. Warning signs
D. Elimination of the hazard
════════════════════
Correct Answer: D. Elimination of the hazard
STUDY GUIDE] – QUESTIONS AND ANSWERS | VERIFIED AND
WELL DETAILED ANSWERS | PLUS RATIONALES | GUARANTEED
PASS | LATEST EXAM UPDATE | EXAM PREP | STUDY GUIDE |
PRACTICE TEST
1. A construction supervisor notices that several workers are not wearing eye protection
while using a concrete saw. What is the supervisor’s MOST appropriate immediate action?
A. Wait until the next safety meeting to address the issue
B. Shut down the task and require proper PPE before work continues
C. Document the violation but allow work to continue
D. Ask workers if they believe eye protection is necessary
════════════════════
Correct Answer: B. Shut down the task and require proper PPE before work continues
Rationale:
Eye protection is mandatory when workers are exposed to flying particles and debris from
equipment such as concrete saws. OSHA requires employers to enforce PPE use immediately
when hazards are identified. Waiting or merely documenting the issue fails to correct the
immediate danger.
════════════════════
2. Which OSHA regulation primarily governs fall protection requirements in construction?
A. 29 CFR 1926 Subpart M
B. 29 CFR 1910 Subpart I
C. 29 CFR 1904
D. 29 CFR 1926 Subpart P
════════════════════
Correct Answer: A. 29 CFR 1926 Subpart M
Rationale:
29 CFR 1926 Subpart M specifically addresses fall protection requirements in construction
activities. Subpart P relates to excavations, while 1910 standards generally apply to general
industry.
,════════════════════
3. A worker on a scaffold 12 feet above ground is not tied off because the task will “only take
a minute.” What is the BEST response?
A. Allow the task if another worker observes nearby
B. Permit the work if weather conditions are calm
C. Stop the work because fall protection is required regardless of task duration
D. Require only a hard hat since the worker is experienced
════════════════════
Correct Answer: C. Stop the work because fall protection is required regardless of task
duration
Rationale:
OSHA fall protection requirements are based on exposure to hazards, not task duration.
Construction workers exposed to falls of 6 feet or more generally require fall protection.
Experience does not eliminate the hazard.
════════════════════
4. What is the PRIMARY purpose of a Job Hazard Analysis (JHA)?
A. To reduce project costs
B. To identify hazards before work begins
C. To determine employee wages
D. To replace OSHA inspections
════════════════════
Correct Answer: B. To identify hazards before work begins
Rationale:
A Job Hazard Analysis systematically evaluates tasks to identify potential hazards and
determine appropriate controls before work starts. It supports proactive risk management
rather than reacting after incidents occur.
════════════════════
5. Which type of fire extinguisher should be used on energized electrical equipment?
A. Class A
B. Class K
C. Water extinguisher
D. Class C
,════════════════════
Correct Answer: D. Class C
Rationale:
Class C fire extinguishers are designed for energized electrical fires. Water-based extinguishers
can conduct electricity and increase the risk of electrocution.
════════════════════
6. During an excavation project, a competent person identifies cracks forming near the trench
edge. What should happen NEXT?
A. Continue work while monitoring conditions
B. Increase worker production to finish faster
C. Remove employees from the trench until hazards are corrected
D. Ignore the cracks if the trench is less than 5 feet deep
════════════════════
Correct Answer: C. Remove employees from the trench until hazards are corrected
Rationale:
Cracks near trench edges may indicate an impending cave-in hazard. OSHA requires workers
to be removed from hazardous excavations until corrective measures such as shoring or
sloping are implemented.
════════════════════
7. Which statement BEST describes the purpose of Lockout/Tagout procedures?
A. To identify employee attendance
B. To prevent unexpected energization of equipment
C. To increase machine efficiency
D. To monitor electrical consumption
════════════════════
Correct Answer: B. To prevent unexpected energization of equipment
Rationale:
Lockout/Tagout procedures protect workers from hazardous energy by ensuring machinery
cannot unexpectedly start during servicing or maintenance activities.
════════════════════
, 8. A contractor discovers asbestos-containing material during renovation work. What is the
MOST appropriate first step?
A. Continue work using dust masks
B. Wet the material and proceed carefully
C. Remove the material immediately without testing
D. Stop work and arrange for proper assessment and abatement procedures
════════════════════
Correct Answer: D. Stop work and arrange for proper assessment and abatement procedures
Rationale:
Asbestos exposure presents serious respiratory hazards. OSHA and EPA requirements
mandate proper assessment and controlled abatement procedures by qualified personnel
before work continues.
════════════════════
9. What is the MINIMUM safe distance generally required between construction equipment
and energized overhead power lines up to 50 kV?
A. 3 feet
B. 5 feet
C. 10 feet
D. 20 feet
════════════════════
Correct Answer: C. 10 feet
Rationale:
OSHA generally requires maintaining at least 10 feet of clearance from overhead power lines
up to 50 kV to prevent accidental contact and electrocution hazards.
════════════════════
10. Which of the following is considered the MOST effective hazard control method?
A. Personal protective equipment
B. Administrative controls
C. Warning signs
D. Elimination of the hazard
════════════════════
Correct Answer: D. Elimination of the hazard
