The top of a single or extension ladder must extend how far above the roof eave?

The correct answer indicates that the top of a single or extension ladder must extend at least 3 feet above the roof eave. This requirement is crucial for ensuring safety when working at heights. By extending the ladder above the roof eave, it provides a secure and stable handhold for workers when moving on or off the roof. This extra height helps prevent slips or falls that can occur when trying to transition from the ladder to the roof surface.

Additionally, when a ladder does not extend sufficiently above the roof eave, users may be more likely to lose their balance or misjudge their step, increasing the potential for accidents. The 3-foot extension requirement is established to mitigate these risks, ensuring that workers have adequate support and can maintain better control. Therefore, understanding the importance of this extension not only contributes to compliance with safety standards but also plays a vital role in protecting the health and safety of individuals working at heights.