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Unit 2: Fuels Classification

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Consumption of Fuels by Fire

Look at the pictures below. What does this suggest to you? One assumption might be that the larger the fuels, the less likely it is that they will be totally consumed by fire. But more important is the assumption that some specific characteristics of the fuels made them unavailable for combustion. Certainly size, arrangement, moisture content, and other fuel characteristics played an important part in their availability to burn.

Grass, up to 100%

Brush, 5-95%


Timber, 5-25%

Copyright 2008, by the Contributing Authors. Cite/attribute Resource . admin. (2005, October 05). Unit 2: Fuels Classification. Retrieved January 07, 2011, from Free Online Course Materials — USU OpenCourseWare Web site: This work is licensed under a Creative Commons License Creative Commons License