Spread Out Equation Charter For Free

A fire that burns an area 10 chains by 10 chains is a 10-acre fire.

Divided into two types: direct and indirect. Direct line is. often preferred, a line in the dirt made by hand tools or. machines, right at the active fire edge.

The rate of spread measures how quickly a fire moves across the landscape, typically in chains per hour (1 chain = 66 feet) and is influenced primarily by the amount and arrangement of fine surface fuels, fuel moisture, wind and slope.

Two methods commonly used to determine spread rate are the cumulative spread rate, calculated as the total distance travelled by a fire divided by the total time of travel, and the interval spread rate, calculated using the minimum time and maximum distance between observations.

While ?control line? refers to all constructed or natural barriers, ?fireline? applies only when you are dealing with a portion of a control line where flammable material has been removed by scraping or digging down to mineral soil.

Fire behavior includes such things as how fast a fire burns (rate of spread), how hot it burns (fire intensity), the presence of fire whirls, and ember production and spotting. In a structure fire, Building Factors, Smoke, Air Track, Heat, and Flame (B-SAHF) are critical fire behavior indicators.

? Control line refers to all constructed or natural fire barriers. It's also used to describe. the treated fire edges used to contain the fire. ? A fireline is any cleared strip or portion of a control line where flammable material has. been removed by scraping or digging down to mineral soil.