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UNIFIED SOIL CLASSIFICATION SYSTEM <br />(NSTM: D 24371 <br />htelor divisions <br />Grouroup p <br />Typical nornoss <br />Laboratory das,ifleatbn atbris <br />0 <br />E <br />GW <br />Well -graded Revels, grovalserrd <br />au ID30)7 <br />Cu`grssrter than 4; Cc- Dstwssn t and 3 <br />nwrturss, little or no fines <br />_ <br />Di o pI OXD60 <br />Sn c <br />Z <br />u <br />GP <br />Polly Podrf grovels. pnvd• <br />Not retesting off predation requlrsnWnts for GW <br />sand mixtures, little or no firws <br />c <br />�v <br />al <br />z <br />` Z <br />c <br />n ? <br />d <br />Silty gravels, gravelsandsih <br />-y 3: a <br />N <br />Atterberg limits b•tow"A" <br />-C £ <br />.5 <br />GM <br />mixtum <br />t <br />lirw or P.I. Ism than 4 <br />CR <br />y • <br />• <br />u <br />t •` <br />C <br />Above "A" line with P.I. <br />4 7 <br />0 <br />isZ <br />between and we bor, <br />drrllne <br />° <br />u= L37 v <br />"A" <br />"A" <br />taws s requiring u <br />Q i <br />" <br />GC <br />grovel -sand -clay <br />Clayey grovels,above <br />a <br />Attarberg limito ab <br />of dual symbols <br />: <br />g <br />trtinrturw <br />IirW with P.I. greener than 7 <br />Wall -graded sands, gravelly <br />: <br />Dbb I'D30i7 <br />SW <br />sands. little a no firWs <br />' - <br />j� <br />C greater than B. C betvvow t and J <br />u Dlo c DIOXD6O <br />• <br />�a <br />`aa—-- <br />o <br />sMI <br />C <br />ti <br />SP <br />Poorly grad. g ded sands, <br />c <br />Not meeting all gradation requirement- for SW <br />sands, little or no fines <br />p <br />O <br />C <br />c <br />c <br />c o 2 <br />`CE Y <br />d <br />Atterberg limits below "A" <br />yc <br />c O a <br />C <br />c <br />SM <br />Silty Yndf, sand -tilt mixtures <br />uk 3 �(^ <br />line or P 1. Is then 4 <br />Limits pitting In hatched <br />is <br />1E • i <br />u <br />d Oo� c c <br />zorw with P.I. between 4 <br />and 7 ere borcivIIiM case <br />g Y <br />Clayey <br />L ° <br />"A" <br />requiring use of dual rym <br />s <br />Sc <br />sands. Yid cl mix- <br />ey <br />h <br />Atterberg limits above <br />P.I. 7 <br />bola. <br />rues$ <br />O O <br />line with greater than <br />Inorganic tilts and very fine <br />Sands• rtxit flour. Silty Or day- <br />ML <br />ey fine sands or clayey silts <br />fib <br />c <br />with slight plaabcity <br />C <br />i <br />for <br />Inorganic clays of low to nw• <br />_ <br />s <br />y <br />v y <br />CL <br />dium plasticity, gravelly clays. <br />Esandy <br />clays, silty clays. lean <br />days <br />hatched See ore ttordxlirW deal. <br />N <br />JI <br />Z <br />40 <br />C. <br />.7 <br />OL <br />Organic tilts and organic silty <br />v <br />c <br />clays of low n planclty <br />s <br />r <br />Inorganic silts, mncaceout or <br />Oonid <br />MN <br />dutomscaout fine sandy or <br />N <br />MM <br />