OSHA 30 Hour Construction Safety
Certification Practice Exam 100
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A Instant Download Pdf
Question 1
What is the primary purpose of the Occupational Safety and Health
Administration (OSHA)?
A) To ensure employers maximize their profits
B) To enforce environmental protection laws
C) To ensure safe and healthful working conditions for workers
D) To regulate international trade in construction materials
Rationale: OSHA was created by the Occupational Safety and Health Act of
1970 with the mission to ensure safe and healthful working conditions by
setting and enforcing standards and providing training, outreach, education,
and assistance.
Question 2
Which regulation contains the OSHA standards specifically for the Construction
Industry?
A) 29 CFR Part 1910
B) 29 CFR Part 1926
C) 29 CFR Part 1904
D) 40 CFR Part 262
Rationale: 29 CFR Part 1926 is specifically designated for Safety and Health
Regulations for Construction. Part 1910 covers general industry.
,Question 3
Under the General Duty Clause, an employer can be cited even if no specific
OSHA standard exists for the hazard, provided the hazard is:
A) Mentioned in company policy
B) Recognized in the industry and likely to cause death or serious physical
harm
C) Reported by at least three employees
D) Identified during a scheduled inspection only
Rationale: The General Duty Clause requires employers to furnish a
workplace free from recognized hazards likely to cause death or serious
physical harm, even when no specific standard applies.
Question 4
Which section of the OSH Act protects workers from retaliation for filing safety
complaints?
A) Section 5(a)(1)
B) Section 8(a)
C) Section 11(c)
D) Section 6(b)
Rationale: Section 11(c) prohibits employers from retaliating against workers
who exercise their rights under the Act, including filing complaints with
OSHA.
Question 5
How many days does an employee have to file a whistleblower complaint with
OSHA after alleged retaliation?
A) 10 days
B) 15 days
C) 30 days
D) 60 days
,Rationale: Workers who believe they have been retaliated against must file a
complaint with OSHA within 30 days of the alleged retaliatory action.
Question 6
What is the maximum allowable slope for an excavation in Type A soil?
A) 3/4:1 (53 degrees)
B) 1:1 (45 degrees)
C) 1-1/2:1 (34 degrees)
D) 2:1 (26 degrees)
Rationale: For Type A soil (the most stable), the maximum allowable slope is
3/4 horizontal to 1 vertical. Protective systems are required for excavations 5
feet or deeper regardless of soil type.
Question 7
At what minimum height must fall protection be provided for construction
workers on a walking-working surface with an unprotected side or edge?
A) 4 feet
B) 6 feet
C) 10 feet
D) 15 feet
Rationale: OSHA standard 29 CFR 1926.501(b)(1) requires fall protection at 6
feet or more above a lower level for construction. General industry uses a 4-
foot threshold.
Question 8
Which of the following is NOT one of OSHA's "Focus Four" hazards?
A) Falls
B) Electrocution
C) Noise exposure
D) Struck-by
, Rationale: OSHA's Focus Four hazards are falls, electrocution, struck-by, and
caught-in/between incidents. Noise is a health hazard but not among the
Focus Four fatal categories.
Question 9
What is the minimum clearance distance for scaffolds from energized power
lines carrying less than 300 volts?
A) 3 feet
B) 5 feet
C) 10 feet
D) 15 feet
Rationale: OSHA requires a minimum clearance of 3 feet for power lines
under 300 volts, with greater distances required for higher voltages.
Question 10
What is the maximum penalty for a willful OSHA violation as of 2026?
A) $7,000 per violation
B) $70,000 per violation
C) **$156,259 per violation**
D) $500,000 per violation
Rationale: The maximum penalty for willful violations is periodically adjusted
for inflation. Willful violations resulting in death may also carry criminal
penalties.
Question 11
A _____ is defined as one who can identify existing and predictable hazards
and has authorization to take prompt corrective measures.
A) Qualified person
B) Competent person
Certification Practice Exam 100
Questions And Correct Answers
(Verified Answers) Plus Rationales
2026 Q&A Instant Download Pdf
Question 1
What is the primary purpose of the Occupational Safety and Health
Administration (OSHA)?
A) To ensure employers maximize their profits
B) To enforce environmental protection laws
C) To ensure safe and healthful working conditions for workers
D) To regulate international trade in construction materials
Rationale: OSHA was created by the Occupational Safety and Health Act of
1970 with the mission to ensure safe and healthful working conditions by
setting and enforcing standards and providing training, outreach, education,
and assistance.
Question 2
Which regulation contains the OSHA standards specifically for the Construction
Industry?
A) 29 CFR Part 1910
B) 29 CFR Part 1926
C) 29 CFR Part 1904
D) 40 CFR Part 262
Rationale: 29 CFR Part 1926 is specifically designated for Safety and Health
Regulations for Construction. Part 1910 covers general industry.
,Question 3
Under the General Duty Clause, an employer can be cited even if no specific
OSHA standard exists for the hazard, provided the hazard is:
A) Mentioned in company policy
B) Recognized in the industry and likely to cause death or serious physical
harm
C) Reported by at least three employees
D) Identified during a scheduled inspection only
Rationale: The General Duty Clause requires employers to furnish a
workplace free from recognized hazards likely to cause death or serious
physical harm, even when no specific standard applies.
Question 4
Which section of the OSH Act protects workers from retaliation for filing safety
complaints?
A) Section 5(a)(1)
B) Section 8(a)
C) Section 11(c)
D) Section 6(b)
Rationale: Section 11(c) prohibits employers from retaliating against workers
who exercise their rights under the Act, including filing complaints with
OSHA.
Question 5
How many days does an employee have to file a whistleblower complaint with
OSHA after alleged retaliation?
A) 10 days
B) 15 days
C) 30 days
D) 60 days
,Rationale: Workers who believe they have been retaliated against must file a
complaint with OSHA within 30 days of the alleged retaliatory action.
Question 6
What is the maximum allowable slope for an excavation in Type A soil?
A) 3/4:1 (53 degrees)
B) 1:1 (45 degrees)
C) 1-1/2:1 (34 degrees)
D) 2:1 (26 degrees)
Rationale: For Type A soil (the most stable), the maximum allowable slope is
3/4 horizontal to 1 vertical. Protective systems are required for excavations 5
feet or deeper regardless of soil type.
Question 7
At what minimum height must fall protection be provided for construction
workers on a walking-working surface with an unprotected side or edge?
A) 4 feet
B) 6 feet
C) 10 feet
D) 15 feet
Rationale: OSHA standard 29 CFR 1926.501(b)(1) requires fall protection at 6
feet or more above a lower level for construction. General industry uses a 4-
foot threshold.
Question 8
Which of the following is NOT one of OSHA's "Focus Four" hazards?
A) Falls
B) Electrocution
C) Noise exposure
D) Struck-by
, Rationale: OSHA's Focus Four hazards are falls, electrocution, struck-by, and
caught-in/between incidents. Noise is a health hazard but not among the
Focus Four fatal categories.
Question 9
What is the minimum clearance distance for scaffolds from energized power
lines carrying less than 300 volts?
A) 3 feet
B) 5 feet
C) 10 feet
D) 15 feet
Rationale: OSHA requires a minimum clearance of 3 feet for power lines
under 300 volts, with greater distances required for higher voltages.
Question 10
What is the maximum penalty for a willful OSHA violation as of 2026?
A) $7,000 per violation
B) $70,000 per violation
C) **$156,259 per violation**
D) $500,000 per violation
Rationale: The maximum penalty for willful violations is periodically adjusted
for inflation. Willful violations resulting in death may also carry criminal
penalties.
Question 11
A _____ is defined as one who can identify existing and predictable hazards
and has authorization to take prompt corrective measures.
A) Qualified person
B) Competent person
