How high should aerial ladders be extended when ventilating a flat roof?

When ventilating a flat roof, it is essential to extend aerial ladders high enough to ensure firefighter safety while providing an efficient means of access and operation. Extending the ladder 6 feet above roof level is the standard practice, as it allows firefighters to maintain a safe distance from the edge of the roof while still being able to effectively perform ventilation tasks. This height reduces the risk of falling off the roof and provides a secure working platform. By being sufficiently elevated, firefighters can also easily manage tools and equipment needed for ventilating smoke or heat, facilitating a more effective response to the fire incident.

While other heights may seem reasonable, they either do not provide adequate safety margins or do not align with the recommended practices established for effective firefighting operations.