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MAJOR DIVISIONS <br />SYMMBBOIR <br />TYPICAL DESCRIPTION <br />Clean <br />GW <br />We"radod gravels, gravel -sand mixlwsa, kft or no <br />$, <br />GRAVELS <br />Grevels <br />(lass than <br />nes <br />GP <br />Pm graded grewh, gravel -sand mbaures, We or <br />O <br />N <br />More than <br />5% fines) <br />no firm. <br />GM <br />' '' gr e°"d Nk mixluras' nwhvb Yc <br />fn <br />10 <br />50% of coarse <br />fraction is <br />W <br />m <br />larger than No. <br />Gravels <br />with fines <br />ems. <br />�'gB <br />4 sieve <br />GC <br />Clayey graveb, grwl-uiwel.y mum,re, pluao Iln... <br />V, <br />$ iV <br />Tip <br />SANDS <br />Clean <br />Sands <br />gW <br />w.k graded sands, gravelly sands, Mae or no fines. <br />SP <br />Po o:y�� sands or gn�Y sue' Nnb or no <br />W <br />r0Z <br />((II <br />More than <br />5%fines) <br />,& <br />Q' <br />50% of coarse <br />O <br />C� <br />fraction Is <br />smaller than <br />Sands <br />SM <br />Silty sands, sand -sit mWkm, non•plasec Ann. <br />No. 4 sieve <br />with fines <br />SC <br />COY ands, sand -clay miaarsa, Plastic IYnes. <br />ML <br />Inorganic alb, rack flour, clayey die wM sight <br />•� <br />O <br />SILTS AND CLAYS <br />pay. <br />CL <br />Inorganic days of low to mo* n pWkcty, (Isan day). <br />p m <br />Liquid limit is less thar 50% <br />W r a <br />QL <br />Organic sib and organic days of low pl ml*. <br />c: <br />MH <br />Inorganic dies, ebakc. <br />g 1 <br />SILTS AND CLAYS <br />uj <br />CDCH <br />Inorganic days of high plasticity. fat days. <br />Z <br />Liquid limit is greater than 50% <br />LL <br />OH <br />Organic days of hO plaslidty. <br />HIGHLY ORGANIC SOILS <br />PT <br />Post - <br />DEFINITION <br />OF TERMS AND SYMBOLS <br />Q <br />Standard Penetration <br />Density Resistance in Blows/Foot <br />2' OUTSIDE DIAMETER SPLIT <br />I SPOON SAMPLER <br />cd <br />Very loose 0-4 <br />2.4' INSIDE DIAMETER RING SAMPLER <br />5 <br />Loose 4-10 <br />OR SHELBY TUBE SAMPLER <br />! <br />z <br />Medium dense 10-30 <br />Dense 30-50 <br />= WATER LEVEL (DATE) <br />y <br />Very dense >� <br />Tr TORVANE READINGS, td <br />Pp PENETROMETER READING, td <br />Standard Penetration <br />gConsistency <br />Resistance in Blows/Foot <br />DIDDRY DENSITY pounds per cubic foot <br />V <br />Very soft 0-2 <br />LL LIQUID LIMIT, percent <br />`o <br />J <br />Soft 2-4 <br />Medium stiff 4-8 <br />PI PLASTIC INDEX <br />Stiff S•16 <br />Very still 16-32 <br />N STANDARD PENETRATION, blows per foot <br />Hard >32 <br />UNIFIED N SYSTEM <br />TERRA <br />MAHAN RESIDENCE <br />god ASSOCIATES <br />EVERETT, WASHINGTON <br />GeoteChnical Consuttonts <br />Proj. <br />No. T-419A <br />Date DEC 1998 <br />I Figure A-1 <br />