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UNIFIED SOIL CLASSIFICATION SYSTEM <br />MAJOR DIVISIONS GROUP GROUP NAME <br />SYMBOL <br />GRAVEL CLEAN GW WELL-GRADEUGRAVEL,FINETOCOARSEGRAVEL <br />COARSE- MORETNAN50%OP GRAVEL GP POORLY-GRA�EDGRAVEL <br />GRAINED COARSE(RACTION GRAVELWITH GM satvcRnv�� <br />SOILS . REIAINED ON NO. 4 SIEVE FINES GC CL..VEY GRAVEI <br />SAND CLEAN SW WELLGRADED SAfJD, fINE TO COARSE SAND <br />MORE THAN 50% MORE THAN CiU%OF SAND SP POORLY�GRADED SAND <br />RETNNED ON THE COARSE FRAC710N SAND WITH SM SILTV SAN� <br />NO 200 SIEVE PA;SIt�G NO.4 SIEVE FINES SC CLAYEY SAND <br />FINE- SILT AND CLAY INORGANIC ML sar <br />GRAINED LIOUIDIIMIT CL cinv <br />SOILS LE55 7HAN 50% ORGAhiC OL ORGANIC SILT, ORGANIC CLAV <br />MORE THAN 50'1L SILTY AND CLAY INORGANIC MH SIIT OF HIGH PLASTICITY, EIASiIC SILT <br />PASSING ON THE UOUID LIMIT �+�� Cl AV Of HIGtI PLASTICITV, fAT CLAV <br />NO. 20051EVE 50%OR MOHE ORGANIC OH Of2GANIC SILT, O(iGANIC SILT <br />HIGHLY ORGANIC SOILS PT PEAT AND OTH[R HIGIILV ORGANIC SOILS <br />n�oTEs: SOIL MOISTUR[ MODIFIERS: <br />I FlELD CLASSIFICA710N IS �ASE� ON VISUAL EXAMINATION DRY - ABSENCE OF MOISTURE, D'JSTV, DRY 1 O <br />OF SOIL IK GENERAL ACCORDANCE WITH ASTM D4468�0J. THF TOUCH <br />2 SOIL CLASSIfICATION USRJG LADORAiORV TESiS IS OAS[D SLIGHTLV MOIST � TI2ACE MOISTURE, NOT UUSiY <br />U�J ASTM D7A87-OJ <br />MOIST • DAMP, Ol1T NO VISIfiLE WATER <br />J DESCRIPTIONS OF SOIL DEIJSITY OR CONSISi[NCY ARE VERY MOIST - VEI2V DAMP, MOISTURE FELT TO THE TOUCH <br />FIASED ON INiFRPRETATION OI" BLOW�COUNT DATA, VISU4L yyEi - VISIfiI.E FREE WATER OR SATURAIEU, <br />APPEARAIlCf- Of SOIL. ;. ANDIOR Tf ST D�TA. <br />USUALLY SOIL IS OOTAINED FROM BELOW <br />WA1fR TAOI.E <br />I�I�1 ck AS.SO�,IA�I�I,Sy INC�. UNIFIED SOIL CLASSIFICATION SYS7�M <br />Grolechn�cal f ngmreriny [ngmoriing Geoingy Eadh Stience <br />r��nrE 3 <br />�yu <br />