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MAJOR DIVISIONS GROUP GROUP NAME <br /> _ SY_ M BO L _ <br /> GRAVEL CLEAN GW WELL-GRADED GRAVEL, <br /> COARSE MORE THAN GRAVEL FINE TO COARSE GRAVEL <br /> GRAINED 50% OF GP POORLY-GRADED <br /> SOILS COARSE GRAVEL <br /> MORE THAN FRACTION <br /> 500/0 RETAINED ON GRAVEL GM SILTY GRAVEL <br /> RETAINED NO 4 SIEVE WITH FINES GC �ICLAYEY GRAVEL <br /> ON NO 200 - - -- - - - - <br /> SIEVE SAND CLEAN SW WL- <br /> ELGRADED SAND, ; <br /> MORE THAN SAND { FINE TO COARSE SAND <br /> a <br /> COARSE _ _-- _ � SP ; POORLY-GRADED SAND <br /> FRACTION SAND WITHSM _11 SILTY SAND <br /> PASSES NO 4 FINES SC 111 CLAYEY SAND <br /> VE 11 <br /> SILT AND INORGANIC I� ML SILT <br /> FINE CLAY CL � CLAY <br /> GRAINED LIQUID LIMIT - <br /> SOILS LESS THAN 50 ORGANIC OL ' ORGANIC SILT, ORGANIC <br /> MORE THAN ; CLAY <br /> 500/0 SILT AND INORGANIC MH i SILT OF HIGH <br /> PASSES CLAY PLASTICITY, ELASTIC <br /> NO <br /> VE LIQUID LIMIT j SILT <br /> SIE50 OR MORE CH CLAY OF HIGH <br /> l PLASTICITY, FAT CLAY <br /> ORGANIC OH ORGANIC CLAY, <br /> ORGANIC SILT <br /> HIGHLY ORGANIC SOILS PT� I PEAT - <br /> Ref Unified Soil Classification System,from American Society for Testing and Materials, 1985 <br />