How many feet should a portable ladder be raised above the roof or parapet at minimum?

The correct answer is that a portable ladder should be raised a minimum of 2 feet above the roof or parapet. This height is crucial for ensuring the safety of firefighters when exiting or entering a building from the roof or when transitioning between the ladder and the roof ledge.

Raising the ladder at least 2 feet above the edge provides a more stable platform for firefighters and helps prevent falls or slips when they are in transition. It also allows for the proper securing of the ladder and ensures that it is adequately positioned for effective use during rescue operations or firefighting activities.

In practice, this standard is applied to maintain safety protocols within the fire service, ensuring that ladders provide a secure and effective means of access and egress. The emphasis on this specific height reflects industry standards that prioritize the well-being of personnel during potentially hazardous operations.