OSHA 10-Hour Construction ReviewFocus Four HazardsEasy
A worker is using a portable ladder to access a platform 16 feet high. According to OSHA standards, what is the minimum height the ladder must extend above the landing surface?
- A1 foot
- B2 feet
- C4 feet
- D3 feet
Show answer & explanationAnswer & explanation
Correct answer: D. 3 feet
OSHA requires that the side rails of a portable ladder extend at least 3 feet above the upper landing surface to provide a secure handhold for workers transitioning on and off the ladder. This ensures stability and prevents falls.
Why the other options are wrong
- A. 1 foot is insufficient for a secure handhold and does not meet OSHA requirements.
- B. 2 feet is insufficient for a secure handhold and does not meet OSHA requirements.
- C. 4 feet exceeds the minimum requirement, which is acceptable, but 3 feet is the specified minimum.
Ladder Extension Rule
OSHA standard requiring portable ladders to extend a minimum height above the upper landing surface for safe access.
- Applies to portable ladders accessing an upper landing.
- Minimum extension is 3 feet (0.9 meters).
- Provides a stable handhold for stepping on and off the ladder.
Memory trick: Three feet high, you can safely fly!