How wide should a firebreak or fireguard be?

Prescribed Fire October 03, 2014 Print Friendly and PDF

There is no set standard, but it should be wide enough for the fuels along the boundary of the burn unit. Typically a bareground line 4 to 10 feet wide is sufficient, but narrow cow trails and even mowed lines can be safely used. The width of the firebreak can be offset by reducing the amount of fuel right next to the edge of the burn unit by mowing or shredding to diminish flame heights and fire intensity.

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This work is supported by the USDA National Institute of Food and Agriculture, New Technologies for Ag Extension project.