Trench Cut Roof Ventilation

The base material can consist of solid wood. The base is the material attached to the roof rafters. Cut trench at narrow point and pull ceiling but do not pull trench.

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This video gives detailed instructions on how where and why to ventilate a flat roof including how and why to make trench cuts.

Trench cut roof ventilation.

A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. 2 observation cuts between fire area and determined trench location. Ventilation flat roof operations 2. Position hose lines underneath and above.

A structure fire was reported at around 6 a m. The same techniques can be used on a slight pitched peaked roof as well. Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. Open the trench and operate hoselines.

The 7 9 8 ventilation cut provides a preset plan for conducting a cut. In the 800 block of fairview avenue at the kenwood apartments in arcadia california. A trench is cut at least 20 feet from the main vent hole and. 0bdecking decking is the material used to comprise the base and exterior covering for the roof.

Far too often when members cut a roof they make. Large vent h over fire area. 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. 5 when fire shows from observation cuts.