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h , w <br /> ENCLOSURE A <br /> UN IED SOIL CLASSIFICATION SYSTEM CHART <br /> Major Divisions Group Typical <br /> Symbols Names <br /> `o m <br /> m m m M Well-graded grovels and gravel-sand <br /> > `o c d c m GW mixtures,little or no Anes <br /> m o ? <br /> n a <br /> GP Poorly graded gravels and gravel-sand <br /> ae m o mixtures little or no Anes <br /> oz „ ate <br /> cCD i t GM Silty gravels,gravel-sand-silt mixtures <br /> mo 'o 0 o3 _c <br /> a m O m (9 " GC Clayey grovels gravel-sand-clay mixtures <br /> (9 0 <br /> CD m m Wef[graded sands and gravelly sands,little <br /> 0 0 0 U ro SW or no Anes <br /> _ c <br /> V 4 Oa o U h SP Poorly graded sands and gravelly sands, <br /> A -r 0z _ lithe of no Anes <br /> vu v c 5M Silty sands,sand-silt mixtures <br /> OL H 3 'L SC Clayey sands sand-clay mixtures <br /> m ML Inorganic silts very One sands rock flour <br /> i a silty or clayey tine sands <br /> C) U E m Inorganic clays at low to medium plasticity, <br /> —' cv C a O CL gravelly clays sandy clays silty clays,lean <br /> z _u' 2,e <br /> clays <br /> m m N Organic silts and organic silty clays of low <br /> o v OL plasticity <br /> O C. <br /> C a _ MN Inorganic sdis, micaceous or diatomaceous <br /> " E Ly m a <br /> One sands or slits elastic silts <br /> v <br /> ae a m o CH Inorganic clays of high plasticity,fat clays <br /> Ln <br /> Ln w,c <br /> h OH Organic clays of medlum to high plasticity <br /> nighty Organic Sods PT Peat muck and other highly organic soils <br /> 'Based on the maiedat passing the 3-In (75-mm)sieve <br /> ! <br /> r <br /> ! I I I <br /> ' l <br /> I <br /> II <br /> , ,, <br /> ! �' �'E Ili�� ' I <br />