Fire Roof Ventilation Cuts

The technique of horizontal or lateral ventilation involves the.

Fire roof ventilation cuts.

The cut is the easy part tools of the ventilation trade. If it is decided that a vent hole is to be cut coordinate a location of the cut with the interior fire attack. We ve assembled the gear and now need to get it to the building in one trip. Glendale fire department ventilation training manual.

Far too often when members cut a roof they make. Once the location is agreed on prepare for your cut. In this article we ll talk about a ground ladder based roof operation on a peaked roof. If necessary cut the roof to provide vertical ventilation.

And depending on what the fire conditions are it may literally be the only option. Cut approximately 2 to 3 inches inside the rafter. A trench is cut at least 20 feet from the main vent hole and. This will allow ventilation without having to cut the roof.

A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. Ventilate openings in the roof such as bulkheads skylights or scuttles. If the roof decking is intact locate a natural vent in the roof such as scuttle skylight or vents. The same techniques can be used on a slight pitched peaked roof as well.

Roll the second center rafter and stop at the third inside rafter. Vertical ventilation is the removal of super heated air gases smoke and pressure inside a closed or vent. Move back to the first outside rafter and cut a parallel.