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OSHA 10-hour construction practice test

121 free practice questions for this exam, each with the reason for the answer and where to look it up.

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OSHA construction safety: practice test

10 questions, graded as you go, with the reason for every answer. No sign-up.

Practice tests that prepare you for this exam

OSHA construction safety

Falls, ladders and scaffolds, electrical, struck-by and caught-in hazards, excavations, health hazards and PPE from the OSHA construction standards.

121 questions for this exam

About the exam

ExamOSHA 10-hour construction
Who runs itOSHA outreach trainers
WhereUnited States

Question count, time limit and pass mark differ by where you take it. Check the official candidate bulletin from the organisation that runs your exam.

Sample questions

For 120-volt, 15- and 20-ampere temporary receptacles on a construction site, which choice does OSHA give the employer for ground-fault protection?

  1. GFCIs or an assured equipment grounding conductor program
  2. GFCIs or double-pole circuit breakers in the temporary panel
  3. An assured grounding program or weatherproof cord caps
  4. Double-insulated cords or a daily megohmmeter test
Show the answer

A. GFCIs or an assured equipment grounding conductor program

The employer must use either GFCIs or an assured equipment grounding conductor program on temporary 120-volt, single-phase, 15- and 20-ampere receptacles. Circuit breakers protect wiring from overcurrent and do not provide ground-fault protection for people.

Reference: 29 CFR 1926.404(b)(1)(i)

A trench is 4 feet 6 inches deep. What does OSHA require for getting out of it?

  1. A ladder, stairway or ramp within 25 feet of lateral travel for each worker
  2. A ladder, stairway or ramp within 50 feet of lateral travel for each worker
  3. A ladder at each end of the trench, whatever the length of the trench
  4. Nothing, because egress is required only at a depth of 5 feet or more
Show the answer

A. A ladder, stairway or ramp within 25 feet of lateral travel for each worker

Trench excavations 4 feet or more deep need a stairway, ladder, ramp or other safe egress placed so no worker travels more than 25 feet laterally to reach it. The 5-foot depth is the trigger for protective systems, not for egress.

Reference: 29 CFR 1926.651(c)(2)

A guardrail top rail must withstand a force of at least how many pounds applied outward or downward at any point along its top edge?

  1. 100 pounds
  2. 150 pounds
  3. 200 pounds
  4. 500 pounds
Show the answer

C. 200 pounds

The top rail must resist at least 200 pounds in an outward or downward direction. The 150-pound figure is the requirement for midrails and other intermediate members.

Reference: 29 CFR 1926.502(b)(3)

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