Fire containment equations for pocket calculators
Intermountain Forest and Range Experiment Station, Forest Service, U.S. Dept. of Agriculture, 1980 - Computers - 17 pages
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Albini back to step burned area ch Burned area target Calculate burned area calculator program structure chains per hour circular fire shape circular option coefficients ij Option contain fire hours containment work begins control line construction display flashes elliptical fire shapes elliptical program elliptical shape Feed in side fire containment problem fire edge fire size acres flank ch/h Flashing 9-s--number flashing display forward rate free-burning fire function F initial area initial attack Insert program side Length/width ratio 1.2 line building rate line construction rate OPERATING STEPS perimeter of burned pocket calculator point of origin Prepare to read press 2nd press CLR Range Exp range--go rate of spread read side required to contain rTsI simplifying assumptions solving the fire squared chains stop occurs stops automatically strip is read Test USDA various length/width L/W Vp/VL