What is the maximum recommended length for extending a ladder?

The maximum recommended length for extending a ladder is 55 feet. This guideline is grounded in safety protocols and practical considerations regarding the stability and usability of ladders at extended lengths. A ladder that extends beyond 55 feet may become unwieldy and difficult to manage, significantly increasing the risk of accidents during use. The 55-foot limit is established based on the balance between reach and maintainable safety. As ladders become longer, factors such as wind load, the climber’s weight, and the structural integrity of the ladder materials also come into play, necessitating a more cautious approach to ladder length to ensure safe operation.

The other options suggest lengths that exceed the safe guidelines or do not align with industry standards, thus making them less advisable for safe ladder usage in typical scenarios.