Laserfiche WebLink
i <br /> UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS SYMBOL CODE TYPICAL NAMES <br /> D D <br /> GW oc' o we 11 graded gravels or gravel-sand mixtures,little or no fines <br /> GRAVELSos)I <br /> – GP Poorly graded gravels or gravel-sand modures,little or no fines <br /> (More than 112 of <br /> o_^ coarse fraction ' GM o 0 0 0 Silty gravels,gravel-sand-silt mixtures <br /> om <br /> no 4 sieve size) o <br /> ' z L`i GCo 0 o Clayey gravels,gravel-sand-day mixtures <br /> m <br /> t7 N SW ° ° Well graded sands or gravelly sands,little or no fines <br /> LU a <br /> SANDS ° <br /> Or- <br /> Sp Poorly graded sands or gravelly sands,little or no fines <br /> (More than 112 of <br /> Coarse fraction < SM Silty sands,sand-silt mixtures <br /> no 4 sieve size) <br /> SC Clayey sands,sand-clay mixtures <br /> ML Inorganic slits and very fine sands,rock flour,silty or clayey fine sands or clayey sifts <br /> with slight plasticity <br /> SILTS CLAYS Inorganic days of low to medium plasticity,gravelly days,sandy clays,silty days, <br /> CL lean days <br /> LL<50 <br /> ❑ ; OL Organic silts and organic silty clays of low plasticity <br /> z�� <br /> C <br /> w MH i i i i i i i i i r i Inorganic silts,micaceous or diatomaceous fine sandy or silty soils,elastic silts <br /> uj Z o g SILTS& CLAYS <br /> E a v LL>50 CH \`\ Inorganic clays of high plasticity,fat days <br /> OH Organic clays of medium to high plasticity,organic silty days,organic silts <br /> ....,... <br /> HIGHLY ORGANIC SOILS Pt -_-----^- Peat and other highly organic soils <br /> OTHER SYMBOLS GRAIN SIZE CLASSIFICATION <br /> CLASSIFICATION RANGE OF GRAIN SIZES <br /> = <br /> Drive Sample 2-112"O D u S standard Grain size <br /> California sampler sieve size In Millimeters <br /> = <br /> Drive Sample no recovery BOULDERS Above 12" above 305 <br /> COBBLES 12"to 3" 305 to 76.2 <br /> = Initial Water Level <br /> GRAVEL 3"to No 4 76 2 to 4 76 <br /> = Final Water Level oner (o) to 314• 76 2 to 19 i <br /> (0 <br /> fine(Q W4*to Na 4 191 to 4 76 <br /> — — — = Estimated or gradational SAND No 4 to No 200 4 76 to 0 074 <br /> material change line coarse(c) No 4 to No 10 1 4 76 to 2 00 <br /> medium(m) No 10 to No 40 2 00 to 0 420 <br /> =Observed material change line fine(t) No 40 to No 200 0 420 to 0 074 <br /> SILT 6 CLAY Below No 200 Below 0 074 <br /> Laboratory Tests il <br /> PI = Plasticity Index CONSISTENCY CLASSIFICATION <br /> El = Expansion Index COHESIVE SOILS GRANULAR SOILS <br /> Description Bltrmrslft` Desatpdan Blawslft.� <br /> UCC = Unconfined Compression Test Very Soft <3 very Loose <5 <br /> TR =Tnaxlal Compression Test soft 3-5 Loose 5-15 <br /> GR = Gradational Analysis(Sieve) Medium(firm) 6-10 Medium Dense 16-40 <br /> CON = Consolidation Test Sus 11-20 Dense 41-65 <br /> CV =Compaction Test _ very soft 21-40 Very Dense >65 <br /> Hard >40 I <br /> •SFT <br /> iSOIL CLASSIFICATION CHARTS WKA NO 2938 05 <br /> 1444 MARIPOSA ROAD DATE 8199 <br /> ' <br /> WALLACE•KUHL&ASSOCIATES,INC <br /> GEOTECHMCAL ENGINEERING Stockton, Callforma PLATE NO 11 <br /> GEOLOGIC&ENVIRONMUffAL SERVICES <br />