CSLB C-36 Plumbing ContractorSafetyEasy
A plumbing contractor is using a portable ladder to access a raised work platform. According to safety standards, what is the minimum height that the ladder should extend above the landing surface?
- A2 feet
- B3 feet
- C4 feet
- D1 foot
Show answer & explanationAnswer & explanation
Correct answer: B. 3 feet
OSHA and ANSI standards require that a portable ladder used to access an upper landing surface must extend at least 3 feet (or 36 inches) above that landing surface. This provides a stable handhold for ascending and descending.
Why the other options are wrong
- A. 2 feet is still less than the minimum required by safety standards for adequate grip and stability.
- C. While safer, 4 feet is not the minimum requirement; 3 feet is the specified standard.
- D. 1 foot is insufficient for a safe handhold and stable transition to or from the landing surface.
Ladder Extension Rule
Safety standard requiring portable ladders used for access to extend a minimum distance above the upper landing surface.
- Minimum 3 feet (36 inches) extension.
- Provides stable handhold for transition.
- Applies to all portable ladders.
Memory trick: Three feet high, reach for the sky (safely).