Soil mechanics necessary to run water through the sieves to wash the coarse particles and clods through. A variety of sieve sizes are available. The boundary between sand and silt is arbitrary. According to the Unified Soil Classification System, a #4 sieve (4 openings per inch) having 4.75mm opening size separates sand from gravel and a #200 sieve with an 0.075 mm opening separates sand from silt and clay. According to the British standard, 0.063 mm is the boundary between sand and silt, and 2 mm is the boundary between sand and gravel. The classification of fine-grained soils, i.e., soils that are
Silt, Colorado Silt, Colorado Silt is a Statutory Town in Garfield County, Colorado, United States. The population was 2,930 at the 2010 census, up from 1,740 at the 2000 census. A post office called "Silt" has been in operation since 1898. The community was named for the silt deposits at the original town site. Silt is located at (39.546316, -107.652072), on the north side of the Colorado River about west of Denver. Interstate 70 passes through the town as it follows the river, with access from Exit 97. Glenwood Springs, the county seat, is to the east, and Rifle is to the