OSHA 10-Hour Construction ReviewStairways and LaddersEasy
A construction crew is installing a new roof on a two-story building. They are using a portable ladder to access the roof. According to OSHA standards, what is the minimum height above the upper landing surface that the side rails of the ladder must extend?
- A3 feet (91 cm)
- B4 feet (122 cm)
- C1 foot (30 cm)
- D2 feet (61 cm)
Show answer & explanationAnswer & explanation
Correct answer: A. 3 feet (91 cm)
OSHA requires that the side rails of a portable ladder used to access an upper landing surface must extend at least 3 feet (91 cm) above that surface to provide a secure handhold for users.
Why the other options are wrong
- B. While safer, this is not the minimum required height by OSHA standards.
- C. This height is insufficient for a safe handhold when stepping on or off the ladder.
- D. This height does not meet the minimum OSHA requirement for ladder extension.
Ladder Extension Requirement
Portable ladder side rails used for access to an upper landing must extend at least 3 feet (91 cm) above that landing.
- Ensures a stable handhold for users.
- Prevents falls when transitioning on/off the ladder.
- Applies to portable ladders for access.
Memory trick: Three feet gives you solid grip, no slip!