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Free OSHA 30 Construction Practice Test Online

Official exam: OSHA 30-Hour Construction

Take a free OSHA 30 Construction practice test online: a full 80-question paper with every answer explained, no sign-up, scored by topic. The full 490-question bank and the timed simulator are $14.99 for 30 days.

First published: September 2, 2026Bank updated: September 2, 2026Published by CertQuestUSA · review process
TL;DR

OSHA 30-Hour Construction: a 490-question practice bank for the real OSHA Safety & Health standard, 6 full papers of 80 questions each with no repeats, every question written to the regulation it comes from.

Where these questions come from

Every question in this bank cites a source -- primarily 29 CFR (87%) and OSH Act (4%) of this exam's citations.

Take a full practice test free. 80 real questions built to the exam's domain weights, every answer explained, no sign-up required, with a domain-by-domain score at the end.
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Want the whole bank for OSHA 30-Hour Construction? One payment of $14.99 gives you 30 days of full access to this exam. It does not renew. No account needed to buy, and there is a 7-day money-back guarantee.
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Ways to pay for the full bank
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6
full papers, no repeats
80
questions per paper
490
questions in the bank
What this exam covers
5 real sample questions
In steel erection, at what height is fall protection generally required?
A. 15 feet
B. 6 feet
C. 10 feet
D. 25 feet
Show answer and reasoning

Correct answer: A. 15 feet

  • B: 6 feet is the general construction trigger under Subpart M.
  • C: 10 feet is the scaffold trigger.
  • D: Not a trigger height used in Subpart R.
Source: 29 CFR 1926.760(a)(1)
Why must guardrail surfaces be smooth?
A. To prevent lacerations, punctures and clothing snagging
B. To make them easier to paint
C. To reduce their weight
D. To improve their load rating
Show answer and reasoning

Correct answer: A. To prevent lacerations, punctures and clothing snagging

  • B: Appearance is not the reason.
  • C: Smoothness does not affect weight.
  • D: Surface finish does not change load capacity.
Source: 29 CFR 1926.502(b)(6)
Where does PPE sit in the hierarchy of hazard controls?
A. Last, after elimination, substitution, engineering and administrative controls
B. First, because it is quickest to deploy
C. Second, immediately after elimination
D. It sits outside the hierarchy entirely
Show answer and reasoning

Correct answer: A. Last, after elimination, substitution, engineering and administrative controls

  • B: Speed of deployment does not change its effectiveness ranking.
  • C: Substitution and engineering controls both come before PPE.
  • D: PPE is explicitly part of the hierarchy, at the bottom of it.
Source: 29 CFR 1926 Subpart E
Within how long must an in-patient hospitalisation, amputation or loss of an eye be reported?
A. 24 hours
B. 8 hours
C. 48 hours
D. 5 days
Show answer and reasoning

Correct answer: A. 24 hours

  • B: 8 hours applies to a fatality.
  • C: Not a reporting window in the standard.
  • D: Not a reporting window in the standard.
Source: 29 CFR 1904.39(a)(2)
What right does a worker have if they believe a serious hazard exists at their workplace?
A. To file a complaint with OSHA and request an inspection
B. To shut down the entire site themselves
C. To fine the employer directly
D. To write their own citation
Show answer and reasoning

Correct answer: A. To file a complaint with OSHA and request an inspection

  • B: Workers cannot shut down a site; OSHA can seek a court order for imminent danger.
  • C: Only OSHA assesses penalties.
  • D: Citations are issued by OSHA, not employees.
Source: OSH Act Section 8(f)
Related reading
OSHA 10 vs. OSHA 30: Which One Your Job Actually Requires ›

Frequently asked questions

Where can I take a free OSHA 30 Construction practice test online?
Right here. CertQuestUSA's free OSHA 30 Construction practice test online is a full 80-question practice paper built to the real exam's domain weights, with every answer explained, with no sign-up and no credit card, and shows your score by topic at the end. The full 490-question bank, with every answer explained and cited to the regulation it comes from, is $14.99 for a 30-day pass that never renews.
How many questions are on the CertQuestUSA OSHA 30-Hour Construction practice test?
490 questions total, split into 6 full papers of 80 each with no repeats across papers.
What topics does the OSHA 30-Hour Construction test cover?
15 domains, with the heaviest weight on Elective: Concrete and Masonry (8%), Elective: Confined Spaces in Construction (8%), and Elective: Cranes (8%).
Where do CertQuestUSA's OSHA 30-Hour Construction questions come from?
Primarily 29 CFR (87%) and OSH Act (4%) of this bank's citations -- computed directly from this exam's own question sources, not a generic description.
Is there a free OSHA 30-Hour Construction practice test?
Yes -- one full 80-question practice paper built to the exam's domain weights, free with no sign-up, with every answer explained and a domain-by-domain score at the end.
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