Take a free practice quiz or get instant, explained answers to OSHA 30-hour construction training questions — fall protection, electrical, scaffolding, and excavation, without the guesswork.
Try it freePoint your phone at the question — on a screen, a printout, anywhere.
Cambo reads the question and answers it in a few seconds.
Read the reasoning behind the answer so it actually sticks.
Looking for the official training, not practice questions? osha.gov — Outreach Training Program ↗
Taking it right now? Snap a photo of any question you get stuck on — get the answer in seconds.
Try it freeOSHA 30-hour material goes deeper than the 10-hour course into supervisor-level topics — scaffold and excavation protective systems, specific height and depth thresholds, who qualifies as a "competent person" — where the right answer often hinges on an exact number or responsibility. Cambo reads the exact question and explains the standard behind it.
No — like the 10-hour, OSHA is clear that no course in the Outreach Training Program is considered a certification. It's a completion card showing the required hours and topics were covered.
OSHA doesn't require it, but many trainers and employers treat the 10-hour as a practical prerequisite since the 30-hour builds directly on that foundational material.
OSHA doesn't set an expiration date on the card itself, though many employers and job sites require renewal every 5 years as a matter of policy — the same convention as the 10-hour card.
No. Cambo is an independent study tool, not produced or endorsed by the Occupational Safety and Health Administration.
Not by OSHA itself in most cases, though some states, cities, and individual employers or contracts require it for supervisors or workers with safety responsibilities on a jobsite.
The 30-hour course covers a significantly broader set of topics — around 84 possible elective and mandatory topics versus a much shorter list for the 10-hour — reflecting its deeper, supervisor-level scope.