Trench Cut Roof Ventilation

A trench is cut at least 20 feet from the main vent hole and. The base material can consist of solid wood. Far too often when members cut a roof they make.

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The 7 9 8 ventilation cut provides a preset plan for conducting a cut.

Trench cut roof ventilation.

0bdecking decking is the material used to comprise the base and exterior covering for the roof. This video gives detailed instructions on how where and why to ventilate a flat roof including how and why to make trench cuts. In the 800 block of fairview avenue at the kenwood apartments in arcadia california. Open the trench and operate hoselines.

A structure fire was reported at around 6 a m. 5 when fire shows from observation cuts. Ventilation flat roof operations 2. The base is the material attached to the roof rafters.

A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. Cut trench at narrow point and pull ceiling but do not pull trench. Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. The trench cut otherwise known as strip ventilation is a long narrow ventilation hole that acts as a fire break on the roof of a structure that is being attacked by fire.

2 observation cuts between fire area and determined trench location. The same techniques can be used on a slight pitched peaked roof as well. Large vent h over fire area. Position hose lines underneath and above.