Fire Roof Ventilation Cuts

A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft.

Fire roof ventilation cuts. The same techniques can be used on a slight pitched peaked roof as well. If it is decided that a vent hole is to be cut coordinate a location of the cut with the interior fire attack. And depending on what the fire conditions are it may literally be the only option. The cut is the easy part tools of the ventilation trade.

We ve assembled the gear and now need to get it to the building in one trip. Ventilate openings in the roof such as bulkheads skylights or scuttles. The technique of horizontal or lateral ventilation involves the. This will allow ventilation without having to cut the roof.

Move back to the first outside rafter and cut a parallel. The 7 9 8 ventilation cut provides a preset plan for conducting a cut. In this article we ll talk about a ground ladder based roof operation on a peaked roof. If the roof decking is intact locate a natural vent in the roof such as scuttle skylight or vents.

Far too often when members cut a roof they make. Glendale fire department ventilation training manual. A common time frame established for failure of a lightweight truss is between 5 and 15 minutes under fire conditions not much time for fire departments to operate within to cut a hole for vertical. Roll the second center rafter and stop at the third inside rafter.

If necessary cut the roof to provide vertical ventilation. A trench is cut at least 20 feet from the main vent hole and. This venting might suffice for the interior forces to find the fire and extinguish it.