Trench Cut Roof Ventilation

2 observation cuts between fire area and determined trench location.

Trench cut roof ventilation.

Discuss is the trench cut an offensive or a defensive operation. Cut trench at narrow point and pull ceiling but do not pull trench. Ventilation trench cut firefighter training references. Large vent h over fire area.

Open the trench and operate hoselines. The trench is often improperly used as fire officers and incident commanders forget that this operation does not replace the need for a primary vent hole over the fire area. A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. 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.

Delmar handbook 3rd edition pages 643 668.