52 questions from the NCCER Core practice test.
10 questions, graded as you go, with the reason for every answer. No sign-up.
A crew is working from a supported scaffold. At what platform height above the lower level does OSHA require each worker to be protected from falling?
D. More than 10 feet
Scaffolds have their own rule: fall protection is required when the platform is more than 10 feet above a lower level. Six feet is the trigger for most other construction work, not for scaffolds.
Reference: 29 CFR 1926.451(g)(1)
A carpenter is building a temporary guardrail along a floor edge. How high above the walking surface should the top rail be set?
A. About 42 inches
The top rail belongs at 42 inches, give or take 3 inches. Thirty-six inches feels right because many handrails are near that height, but it is below the allowed range for a guardrail top rail.
Reference: 29 CFR 1926.502(b)(1)
A guardrail top rail must be able to withstand an outward or downward force of at least how much without failing?
C. 200 pounds
The top rail must hold at least 200 pounds applied outward or downward. The 5,000-pound figure belongs to personal fall arrest anchorages, not guardrails.
Reference: 29 CFR 1926.502(b)(3)