Trench Cut Roof Ventilation

Ventilation flat roof operations 2.

Trench cut roof ventilation.

Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. 2 observation cuts between fire area and determined trench location. Open the trench and operate hoselines. A trench is cut at least 20 feet from the main vent hole and.

5 when fire shows from observation cuts. The base material can consist of solid wood. The 7 9 8 ventilation cut provides a preset plan for conducting a cut. Far too often when members cut a roof they make.

The same techniques can be used on a slight pitched peaked roof as well. A structure fire was reported at around 6 a m. The base is the material attached to the roof rafters. 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.

A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. Large vent h over fire area. Cut trench at narrow point and pull ceiling but do not pull trench. In the 800 block of fairview avenue at the kenwood apartments in arcadia california.