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_ .w <br /> DESCRIPTION MAJOR DIVISIONS <br /> Well-graded gravels,gravel sand mixtures,little or Clean gravels(little Or no <br /> ..::: GW no fines fines) Gravel and gravelly <br /> ••••• soils <br /> a'> <br /> Poorly-graded gravels,gravel sand mixtures,little <br /> GP or no fines <br /> N <br /> More than 50%of a <br /> Silty gravels,gravel-sand-silt mixtures Sands with appreciable amount coarse fraction retained <br /> GH of fines on no.4 sieve L <br /> V <br /> Clayey gravels,gravel-sand-clay mixtures <br /> GC <br /> 0 <br /> Well-graded sands,gravelly sands,little or no fines Clean sand(little or no fines) L <br /> gn Sands and sandy soils <br /> u <br /> 0 <br /> Poorly-graded sands,gravelly sands,little or no <br /> SP fines More than 50%of y <br /> coarse fraction v <br /> Silty sands sand-salt mixtures passing no.4 sieve c <br /> SM Sands with appreciable amount to <br /> of fines <br /> SC Clayey sands,sand-silt mixtures o <br /> U <br /> Inorganic silts and very fine sands,rock flour,silty <br /> or clayey fine sands or clayey silts with slight c <br /> ML plasticity —' <br /> Liquid limit less than Silts and <br /> Inorganic clays of low to medium plasticity. 50 clays E <br /> CL gravelly clays•sandy clays,silty clays,lean czys vi <br /> 3° <br /> v-� <br /> Organic sills and organic silty clays of low c <br /> OL plasticity a <br /> U <br /> C <br /> Inorganic silts,micaceous or diatomaccous fire E <br /> MH Inorganic <br /> or silty soils = <br /> C <br /> NV <br /> Inorganic clays of high plasticity, fat,clays Liquid limit greater than Silts •"'� <br /> / CH 50 and o <br /> clays aoo <br /> u <br /> Organic clays of medium to high plasticity,organic f% c <br /> OH silts <br /> Peat,human,swamp soils with high organic Highly Organic soils <br /> PT contents <br /> Unified Soil Classification ; <br /> r : <br /> Quality Control Inspection s <br /> : <br /> Gmat�bwggiom-76=q labor ma <br /> ISS`L&rmii.�c,&n7d Q-Vtadcsa G 9�'1 t <br />