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a <br />PLATY H-1 <br />MAJOR DIVISIONS <br />SYMBOLS TYPICAL SOIL DESCRIPTIONS <br />GW Wt11 graded prowls or growl -sane mixtures, little a no fiats <br />"► <br />GP Poorly pr®®®® grovels or gravel - sand mixtures, Itttlt or +a fines <br />0 <br />a <br />J •� <br />(More Than 1/2 of <br />• <br />®n <br />Boort• fraction D <br />ISM Silty growls, gravel -sand -1111 mesfur•t <br />®N <br />no.4 sieve tial <br />Z.C®s <br />GC Clay®y Orgrovels.It, gravel- sand- clay mixtures <br />� <br />�y,r <br />SW Wtll p►odt4 sonde a gravelly fonds, little a no fines <br />W N <br />QC <br />A <br />SP Poorly graded sands M gravelly {and{, little a n0 fines,® <br />G <br />V � <br />(more than 1/2 of <br />coarse frost+a► < <br />SM Silty sands, sand -silt mixtures <br />� <br />no.4 sieve size) <br />SC •� Clayey fonds, sand -clay m+stumtt <br />Hinorganic <br />silts and very fine tarts, rock flout. silty a clayey <br />M ` <br />e <br />SILTS Q CLAYS <br />f+ew sands or Cfoyty t+lf• with {light plasticity <br />J.CC� <br />CL Inorganic clay{ of low 4pmtdium plot4ie+ty, gravelly cloy{, <br />0 0 <br />LL < 50 <br />sandy slays, silty cloys, lean slays <br />HN <br />`q' <br />®L Organic sills and agenic silly cloy• or tow plasticity= <br />Ip <br />2 <br />Q � <br />e s+lts, m+coc•s a d+atomactous fine sandy or ally sale, <br />MH lInorganicpoInorganicov <br />� ® SILTS 8 CLAYS <br />l tlattic silts <br />c <br />CH inorganic cloy{ of high plasticity, tot Clay{ <br />U. <br />o <br />®H Or a says of medium to Mph plasticity, organic silty clays. <br />organic silts <br />HIGHLY ORGANIC SOILS <br />FitPost and other highly organi <br />c saleCLASSIFICATION <br />CLASSIFICATION CHART <br />(Unified Sal Classification System) <br />Go -, <br />CLASSIFBCATIO RANGE OR GRAIN SIZES <br />U. tondor <br />Grain ti• X <br />Sieve Size <br />to MillimetersCM <br />BOULDERS Above 12" <br />® < • <br />Above 305 2 <br />COBBLES 12" to 3" <br />•P <br />305 to 76.2 ' <br />v <br />GRAVEL 3" to No.4 <br />zo CL ON <br />76.2 to 4.76 h Is <br />COOri• 3' to 3M' <br />49 <br />76.2 10 If).l Mx <br />,® <br />If ins 3M" to No. 4 <br />L <br />19.1 to 4.76 M®OL <br />SANG Na 4 oo•Na 2 <br />®0 W >b 30 ®O 10 60 90 t0 f0 X00 <br />4.76 to Q074 <br />LIQUID LIMIT <br />Coors® No. 4 to Nab 4.76 to 2.00 <br />medium No. b to Nn 40 2.00 to 0.420 PLASTICITY CHART <br />fin® No. 40 to M 200 <br />to 0074 <br />SILT 8 CLAY Below Na 200 <br />Below <br />GRAIN SIZE <br />CHART <br />METHOD <br />OFe0420 <br />I L SIFI TIO <br />con <br />ett00C�eT�t <br />0.074 <br />