Time Lag 10 hour fuels correspond to which diameter range?

Time Lag 10 hour fuels correspond to which diameter range?

• A. 1/4-1 inch
• B. Less than 1/4 inch
• C. 1-3 inches
• D. 3-8 inches

Answer: (A)

Time lag fuels describe how quickly dead fuels of different diameters respond to changes in heating and moisture. The 10-hour category includes fuels that are small to moderately small in diameter, taking on the order of ten hours to approach ambient moisture and temperature changes. This places them in roughly a quarter-inch up to one inch in diameter. That’s why the correct range is 1/4 to 1 inch. For contrast, finer fuels (less than a quarter inch) respond in about an hour, while coarser fuels (between about 1 and 3 inches, and 3 to 8 inches) correspond to the 100-hour and 1000-hour time lag categories, respectively.

Time lag fuels describe how quickly dead fuels of different diameters respond to changes in heating and moisture. The 10-hour category includes fuels that are small to moderately small in diameter, taking on the order of ten hours to approach ambient moisture and temperature changes. This places them in roughly a quarter-inch up to one inch in diameter. That’s why the correct range is 1/4 to 1 inch. For contrast, finer fuels (less than a quarter inch) respond in about an hour, while coarser fuels (between about 1 and 3 inches, and 3 to 8 inches) correspond to the 100-hour and 1000-hour time lag categories, respectively.