Trench Cut Roof Ventilation

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. Large vent h over fire area. Cut trench at narrow point and pull ceiling but do not pull trench.

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Discuss is the trench cut an offensive or a defensive operation.

Trench cut roof ventilation.

5 when fire shows from observation cuts. A trench is cut at least 20 feet from the main vent hole and. A trench is cut after the main ventilation hole is cut and extended and inspection holes are made to monitor extension in the cockloft. Ventilation trench cut firefighter training references.

Delmar handbook 3rd edition pages 643 668. 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. Position hose lines underneath and above.

2 observation cuts between fire area and determined trench location.

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