Trench Cut Roof Ventilation

In the 800 block of fairview avenue at the kenwood apartments in arcadia california.

Trench cut roof ventilation.

The base is the material attached to the roof rafters. Position hose lines underneath and above. Large vent h over fire area. A structure fire was reported at around 6 a m.

0bdecking decking is the material used to comprise the base and exterior covering for the roof. 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. The 7 9 8 ventilation cut provides a preset plan for conducting a cut.

2 observation cuts between fire area and determined trench location. The base material can consist of solid wood. Open the trench and operate hoselines. This video gives detailed instructions on how where and why to ventilate a flat roof including how and why to make trench cuts.

Center rafter can also be used for cutting strip ventilation on 1 x 4 or 1 x 6 sheathed roofs. The same techniques can be used on a slight pitched peaked roof as well. 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. Ventilation flat roof operations 2.