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..-iF 3R73. <br /> METHOD OF SOIL CLASSIFICATION <br /> CASTM D 24a7) <br /> COARSE-GRAINED SOILS FIN E-GRAIMEID SOILS <br /> LESS TH M SQ%FINES• MORE THAN$O%FINES" <br /> MAM§GROUPSi DEriCi YWN OMSfON1 SYMBOULS� GESC#!!►TIOM pryHi4MS <br /> Y�ELL-CRADED CRAVELS OR GRAVEL- INORGANIC SILTS. VERY FINE SANDS. <br /> CW SAND IOVUM. LE,% THAN S% FINES ML ROCK FLOUR. SILTY OR CLAYEY FINE <br /> BELS SANDS SILTS <br /> ND <br /> POORLYZRADED CRnYELS Ota CR.AVEL• A4" haw iNORGA)i1C CLAYS OF LOW TO MSAND1 AND <br /> CP SAND MIXTURES. LESS THAN S% FINES AftosrsalrMmn CL PLASTICITY. GRAVELLY CLAYS. SANDY CLAYS <br /> isiarextAt CLAYS.SILTY CLAYS.LEAN CLAYS LKWsdRmi <br /> CM SILTY MIXTURES. MORE THAN EL-S o-HIES NO.4 OL OP.CANIC SILTS OR ORGANIC SILTY�LAYS Itu MR 6o <br /> siavr+� OF ROW PtItSTICITY <br /> CC CLAYEY GRAVELS. CRAVEL•SAMO4:LAY INORGIINIG SILTS. MICACEOUS OR OLA- <br /> MIXTURES, MORE THAN 12% FINES MH T0At/10E= FINE SANDS OR SILTS, <br /> WELL-CRADEO SANDS OR CRAVELLY ELASTICSILTS SILTS <br /> AND <br /> SW SANDS.LESS THAN S%FINES CH <br /> 1N0RGAMIC CLAYS OF HI..►1 PLJ15T1C1TY, CLAYS <br /> POORLY•CRAMD SANDS OR CRAVELLY SANDS FAT CLAYS LkKWLimit <br /> SPSANl73.LESS TIiANS%FINES MOMtlM Ahalf mwvtl14n50 <br /> dCWLMNIraction ORCANIC CLAYS OF MEDIUM TO HIGH <br /> SILTY SANDS. SAND-SILT MIXTURES. 155r+calicr Mn OH PLASTICITY <br /> SM MORE THAN 12%FINES <br /> .1404 <br /> HIGHLY <br /> CLAYEY SANDS. SAND-CLAY MIXTURES. PT PEAT. MUCK. AND OTHER HIGHLY ORGANIC <br /> SC MORE THAN 12%FINES ORCANiCSOIlS SOILS <br /> NOTE: NOTE: <br /> Coarse grained soils receive dual symbols if .Fine grained soils receive dual symbols it their <br /> _. they contain 5 to 12% fines (e.g. SWSM, limits plot in the hatched zone on thel lasticit:y <br /> GP-CC,etc.) Cb4n(ML-CLI <br /> SOIL SIXES PLASTICITY CHART <br /> 60 <br /> COMPONENT SIXERAW.E <br /> =FCMF-1ECRAINEDSOILS <br /> BOULDERS ABOVE 121.. AND FINE FRACTIONOF <br /> tc CH <br /> DSOI <br /> CONLES 3in.to12in. x CpARSE•CRAINE1 <br /> CRAWL No,4 to 3 i.. F <br /> C"ne K In.to 3 in. F 30 ti <br /> Fins No.4to h in. [ CL <br /> SAND No.200 to No.4 96 20 <br /> MHdOM <br /> Coarse - No.logo No.4 10 AAL-CL <br /> . Medium No.40 to No.10 4 OL <br /> Fins No.=to No.40 0 <br /> 0 10 24 )0 b 50 W 10 so w 100 <br /> 'FINES{Si1taCTat't BELOW No.2w LIQUIOLlMIT <br /> NOTE: <br /> Only sizes smaller that three inches are <br /> used to classify sods. <br /> r� <br />