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' SAMPLE CLASSIFICATION CHART <br /> UNIFIED SOIL CLASSIFICATION SCHEME <br /> RAPHIC <br /> MAJOR DIVISIONS SgGP <br /> LS COLUMN TY PICAL NAMES <br /> COLUMN <br /> well-graded gravels and gravel-sand mixtutas,little <br /> or no fines <br /> GRAVELS poorly-graded gravels or gravel-sand mixtures, <br /> � c9i N (More than 112 of Iittla or no fines <br /> F w o m Coarse fraction> GM Silty gravels,gravel-sand-sift mixtures <br /> Z > no.4 sieve size) <br /> 75:q m GCClayey gravels,gravel-sand-clay mixtures <br /> m N <br /> Well-graded sands or gravelly sands,little or no <br /> w SW�� fines <br /> Poorty-graded sands or gravelly sands,lithe or <br /> o-- A (Mare than 112 of SP no fines <br /> v coarse fraction< <br /> no.4 sieve size) SM Silty sands,sand-sift mixtures <br /> Sc Clayey sands,sand-clay mixtures <br /> Inorganic silts and vory fine sands,rock(tour,silty or <br /> SILTS&CLAYS ML clayey fine sands or clayey silts with slight plasticity <br /> d ~ CL Inorganic days of low to medium plasticity,gravelly <br /> W o O7 LL C 50 clays,sandy clays,silty clays, lean clays <br /> w " m OL Organic silts and organic silty clays of low plasticity <br /> s w c MH Inorganic sifts,micaceous or diatomaceous fine <br /> cv SILTS&CLAYS sandy or silly sails elastic silts <br /> yg CH . _ Inorganic days of high plasticity,tat clays <br /> v LL>5D <br /> Organic clays of medium to high plasticity,.organic <br /> OH silty clays,organic sifts <br /> HIGHLY'ORGANIC SOILS Pt Peat and other highly organic soils <br /> °^ CLASSIFICATION MODIFIERS <br /> GRAIN SITE CLASSIFICATION <br /> TRACE 0-10% <br /> LITTLE 10-20% CLASSIFICATION RANGE OF GRAIN SIZES <br /> " SOME 20-35% U.S Standard Grain Size <br /> AND 35-50% Sieve Size in Millimeters <br /> ±MODIFIERS BOULDERS Above 12' Above 305 <br /> PLASTICITY CHART COBBLES 12"to 3" 305 to 76.2 <br /> 60 <br /> _ 5D GRAVEL 3"to No.4 76.2 to 4.76 <br /> Coarse(C) 3'to 314" 76.2 to 19.9 <br /> i 40 CH fine(f) 314' to No.4 19.1 to 4.76 <br /> 30 SAND No.4 to No.200 4.76 to 0.074 <br /> coarse(c) __ - No.4 to No.10-_ 4.76 to 2.00 <br /> - f= 20 medium(m) No.10 to No.40 2.00 to 0.420 <br /> N <br /> CLI -A"Linefine({) No.40 to No 200 0.420 to 0.074 <br /> CL.10 aSILT&CLAY Below No.200 Below 0.074 <br /> 01 <br /> f 0 90 20 30 40 50 60 70 80 90 100 <br /> `T LIQUIDLIMrr Woodward"-CEgde ConsuitOnits <br />