Trench Cut Roof Ventilation

Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. A trench is cut at least 20 feet from the main vent hole and. The 7 9 8 ventilation cut provides a preset plan for conducting a cut.

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Cut trench at narrow point and pull ceiling but do not pull trench.

Trench cut roof ventilation.

The base material can consist of solid wood. Large vent h over fire area. The base is the material attached to the roof rafters. Position hose lines underneath and above.

2 observation cuts between fire area and determined trench location. A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. This video gives detailed instructions on how where and why to ventilate a flat roof including how and why to make trench cuts. 5 when fire shows from observation cuts.

0bdecking decking is the material used to comprise the base and exterior covering for the roof. Ventilation flat roof operations 2. Far too often when members cut a roof they make. 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.

In the 800 block of fairview avenue at the kenwood apartments in arcadia california. A structure fire was reported at around 6 a m. Open the trench and operate hoselines. The same techniques can be used on a slight pitched peaked roof as well.