Laserfiche WebLink
SOIL CLASSIFICATION SYSTEM <br />MAJOR DIVISIONS <br />GROUP <br />SYMBOL <br />GROUP NAME <br />GW <br />WELL -GRADED GRAVEL, FINE TO COARSE GRAVELGRAVEL <br />L <br />CLEAN GRAVEL <br />GP <br />POORLY -GRADED GRAVEL <br />More Than 50% <br />of Coarse Fraction <br />GRAVEL <br />GM <br />SILTY GRAVEL <br />GC <br />CLAYEY GRAVEL <br />Retained <br />on No. a Sieve <br />WITH FINES <br />SW <br />WELL -GRADED SAND, FINE TO COARSE SAND <br />SAND <br />CLEAN SAND <br />More Than 50% <br />SP <br />POORLY -GRADED SAND <br />Retained on <br />No. 200 Sieve <br />More Than SO.. <br />of Coarse Fraction <br />SAND <br />SM <br />SILTY SAND <br />Passes <br />WITH FINES <br />SC <br />CLAYEYSAND <br />No. a Sieve <br />ML <br />SILT <br />FINE <br />SILT AND CLAY <br />INORGANIC <br />GRAINED <br />CL <br />CLAY <br />SOILS <br />itORGANIC <br />Liquid Limit <br />OL <br />ORGANIC SILT, ORGANIC CLAY <br />Less Than 50 <br />MN <br />SILT OF HIGH PLASTICITY, ELASTIC SILT <br />More Than 50% <br />Passes <br />SILT AND CLAY <br />INORGANIC <br />CH <br />CLAY OF HIGH PLASTICITY. FAT CLAY <br />No. 200 Sieve <br />Liquid Llrnil <br />ORGANIC <br />ON <br />ORGANIC CLAY, ORGANIC SILT <br />50 or More <br />HIGHLY ORGANIC SOILS <br />PT <br />PEAT <br />NOTES: <br />SOIL MOISTURE MODIFIERS: <br />t. Field classification Is based on visual examination of soil in <br />Dry - <br />Absence of moisture, dusty, dry to the touch <br />general accordance with ASTM D2488.90. <br />2. Soil classification using laboratory tests is In general <br />Moist • <br />Damp, but no visible water <br />accordance with ASTM D2481•90. <br />Wet• <br />Visible free water or saturated• usually soli is obtained from below <br />0. Descriptions of soil density or consistency are based on <br />water table <br />interpretation of blow count data, visual appearance of soils. <br />and or test data. <br />SOIL CLASSIFICATION SYSTEM <br />FIGURE A-1 <br />GEOENGINEERS <br />� <br />I ,,,d. i 3L <br />