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, <br />- UNIFIED SOIL CLASSIFICATION SYSTEM <br />MA,;OR DIVISIONS GROUP GROUP NAME <br />� SYPABOL <br />GRAVEL CLEAN GW WELL-GR4�ED GRAVEL, FINE TO COARSE GRAVEL <br />COARSE- MORETHAN50%nF GRP,VEL GP POORLY-GRADEDGRAVEL <br />GRAINED COARS[FRACTION GRAVEL WITH GM SILTYGRAVEL <br />SOILS RE7AINEDONN0.4SI[VE FINES GC CIAYEYGRAVEL <br />SAND CLEAN SV�� WELL-GR.4DED SAND, FINE TO COARSE SAND <br />MORE TFiAN 50% MORE THAN 50% Of SAND SP POORLY-GRA['ED SAND <br />REb\INED ON THE COARSE PRACTION SAND WITH SM SILTY SAND . <br />NO. 200 SIEVE PASSING N0. 4 SIEVE <br />FINES SC CLAYEY SAND <br />FINE- SIL7 AND CLAY INORGANIC �`/�� SILT <br />GRAI(�ED LIQUIDLIMIT CL cv�v <br />SOILS �ESS TI1AN 50% ORGANIC OL ORGANIC S�LT, ORGANIC CLAY <br />MORE THAN 50% SILTY AND CLAY INORGANIC MH SILT OF H�GH PLASTICITY, EIASTIC SIL7 <br />PASSING ON T�iE LIQUID LIMIi� CH CLAY OF HIGH PLASTICITY, FAT CLAY <br />NO. 200 SI[VE 50% OR MORE ORGI�NIC OH ORGANIC SILT, ORGANIC SILT <br />HIGfiLY ORGANIC SOILS PT PEAT AND OTHER HIGHLY ORGANIC SOII.S <br />NO'i ES: SOIL MOISTURE MODIFIERS: <br />1. FI[LD CLASSIF�CATION IS �ASED OIJ VISUAL EXAMIN�TION DRY - A65ENCE OF MOISTURE, DUSTY, DRY TO <br />OF SOIL IN G[N[fiAL ACCORDANCE WITN ASTM DZA88-83. THE TOUCH <br />2. SOIL CLASSIFICATION USING LA�ORATORY T[STS IS �ASED SLIGHTLY MOIST - TRACE MOiSTUR[, NOT �USTY <br />ON ASTM D2407-03. MOIST - DAMP, BUT NO VISI�LE WATER <br />3. D[SCRIPTIONS OF SOIL DENSITY OR CONSIST[NCY ARC V[RY MOIST • VERY DAMP, MOISTURE FELT TO THE TOUCH <br />BASED ON ItJT[RPRETATION OF BL04V-COUNT DATA, VISUAL yyET- VISIBLE FREE WATER OR SATUFtATED, <br />APP[ARANCE OF SOILS, AND/OR TEST DATA. . USUALLY SOIL iS OOTAINED FR067 BELOW <br />WATER TABLE <br />LIU & ASSOCIATCS� INC. UNIFIED SOIL CLASSIFICATION SYSTEM <br />Geo�echnical Engineenng � Engineering Geology � Eadt Science <br />PLATE 3 <br />