Trench Cut Roof Ventilation

A trench is cut at least 20 feet from the main vent hole and.

Trench cut roof ventilation.

The same techniques can be used on a slight pitched peaked roof as well. Ventilation flat roof operations 2. Cut trench at narrow point and pull ceiling but do not pull trench. A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft.

Open the trench and operate hoselines. The 7 9 8 ventilation cut provides a preset plan for conducting a cut. 0bdecking decking is the material used to comprise the base and exterior covering for the roof. A structure fire was reported at around 6 a m.

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

2 observation cuts between fire area and determined trench location. The base material can consist of solid wood. Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. 5 when fire shows from observation cuts.