According to OSHA 29 CFR 1926.1053, what is the maximum vertical distance between ladder rungs or steps?
Correct Answer
B) 12 inches
OSHA specifies that ladder rungs and steps must be spaced uniformly with a maximum spacing of 12 inches center to center. This ensures safe climbing and prevents workers from overreaching between rungs.
Why This Is the Correct Answer
OSHA 29 CFR 1926.1053(a)(3)(i) specifically mandates that ladder rungs and steps must be spaced uniformly with a maximum distance of 12 inches measured center to center. This 12-inch maximum spacing is a critical safety requirement designed to ensure workers can safely climb ladders without overextending their reach between rungs. The regulation applies to all portable ladders used in construction and helps prevent falls caused by excessive spacing that could lead to loss of grip or footing.
Why the Other Options Are Wrong
Option A: 24 inches
18 inches is 6 inches beyond the maximum allowed spacing, creating dangerous gaps that could cause workers to lose their grip or footing while climbing.
Option D: 18 inches
16 inches exceeds OSHA's maximum allowable spacing by 4 inches, which would create unsafe climbing conditions and violate federal safety standards.
Memory Technique
Think '12 inches = 1 foot' - remember that ladder rungs can't be more than one foot apart, which is a natural, comfortable stepping distance for most people.
Reference Hint
OSHA Construction Standards 29 CFR 1926 Subpart X - Stairways and Ladders, specifically section 1926.1053 regarding ladder requirements
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