OSHA 10-Hour Construction ReviewStairways and LaddersMedium
A construction site needs a fixed ladder to access a permanent elevated platform. According to OSHA, what is the maximum permissible distance between rungs on this fixed ladder?
- A16 inches (41 cm)
- B12 inches (30 cm)
- C14 inches (36 cm)
- D10 inches (25 cm)
Show answer & explanationAnswer & explanation
Correct answer: C. 14 inches (36 cm)
OSHA specifies that fixed ladder rungs must be spaced uniformly and not more than 14 inches (36 cm) apart, measured center to center. This ensures consistent foot placement and reduces the risk of missteps.
Why the other options are wrong
- A. This spacing is too wide and exceeds the maximum allowed by OSHA, increasing fall risk.
- B. This is a common spacing but not the maximum permissible.
- D. This spacing is too close and not the maximum allowed.
Fixed Ladder Rung Spacing
Fixed ladder rungs must be uniformly spaced, no more than 14 inches (36 cm) apart, measured center to center.
- Applies to fixed ladders.
- Uniform spacing is critical.
- Maximum 14 inches (36 cm) center to center.
Memory trick: Fourteen inches maximum, for your steady traction.