When lowering a ladder down an elevator, it should extend at least __ feet above the landing floor.

The correct answer is that the ladder should extend at least three feet above the landing floor when lowering it down an elevator shaft. This three-foot extension provides critical safety and accessibility for firefighters and other emergency responders.

When performing a rescue or conducting an operation in a high-rise building, having a ladder that extends sufficiently above the landing allows firefighters to secure themselves and provides a stable handhold or point of attachment. This extension enables personnel to safely maneuver on and off the ladder, reducing the risk of falls and other accidents during a potentially chaotic situation.

Additionally, this standard ensures that the ladder is readily visible from above, allowing individuals inside the building to see rescue efforts, which can provide psychological reassurance as well.

In the context of ladder safety and operational protocols, the three-foot extension is recognized as a best practice among fire service professionals.