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r <br /> UNIRED SOIL CLASSIFICA,i 10N SYS 17EM <br /> MAJOR DIVISIONS SYMECLS TYPICAL NAMES <br /> GVV ,, ? Well graded gmvals cr gravel-sand mrxtums,little cr no rues <br /> GRAVELS7 <br /> u, GP d i z7rly graded grovels or gravel-sand mixtures,little or no fines <br /> triMCRE THAN I/2 OF GSA Siity-grovels, 9rvvd-surd-silt mixtures <br /> in COARSE FRAC'ICH> <br /> w 8 Na 4 SIE'/E SIZE <br /> GC Clayey grareis,gravel-sand-Stay mixtures <br /> (D $ � <br /> i S <br /> !s! SANDS Well sands argroaly cards,1111le or <br /> na Finn <br /> � qPPoorly graded lands or gravelly sands, little arra tines <br /> 01 MORE THAN 1/2 OF <br /> o COAASE FitAC1CN C SM '�� Silty sands,sand-silt mixtures <br /> # NO.4 S1 EVE SIZE <br /> Sc Clayey sands,sand-clay mixtures <br /> U1 1 ML ! Inorganic silts and ruyffnl Sands,rack fkxr,silty or elay� <br /> rn SILTS $ CLAYS r fine sands artloydy silts with slight plasticity <br /> 11' N + �� 1=;**�of taw to rne�plasticity,gravel! <br /> Gi sandy clay!,silty cloys,lean days y dm' <br /> wrn LL<50 jar; . <br /> go OL l I Organic sills and organic silty cloys of lox plmtidty <br /> $ <br /> MHfic"anic INS,micacects or dielar+acaaus fine sazly or silly <br /> V sails,stastic sirs <br /> r w o SILTS S CLAYS <br /> CH Inorganic cloys of high Dlasrtcity,f:1r clays <br /> 950 Q� ii Organic cloys of medium to high plostEeity,ceyartia silty clays, <br /> /� dryanie silts <br /> HIGHLY ORGANIC SOILS f Pt Past and ow highly organic sails <br /> E <br /> _ L ]SSLFl AC TION CHART <br /> RANGE OF Ger-04N SAL= <br /> ,t <br /> LC:71FICATICN U.S: Standard Grain Size <br /> FI Sieve Size In Millimeters <br /> n <br /> BOULDE=RS Above 12" Above SCB <br /> COBBLES 12"to S" rO5 to io2 <br /> GF-"VEL C°to Na.4 (G.2 to 4.76 <br /> C05c- -- --- 3 to 3r4'• -- 61.`o lo.l _ <br /> _-._-- <br /> -- — FIRE 3/4 <br /> toN&4 19.1 to 476 <br /> SAND f No.4 to Nr_200 f 4.76 to 0.97-4 <br /> CCARSE No.4 to*.IQ 416 to 200 <br /> MEDIUM No.10 to No_40 ZAO to 0.420 <br /> FINE j NI-10 to No.ZCO 0.4220 to 0.07- <br /> t <br /> 1 SILT a CLAY Below Nc.2.1O 1 Below Na.0.074 <br /> r <br /> GEM_SIZE CHART <br /> HUNTER & ASSOCIATES <br /> SACRAMENTO, C-� <br /> i <br />