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<br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />.. ' <br />;:0 <br />~Z <br />'Oc: <br />!.s <br />.iG .. <br />90~ <br />8l,!! <br />.. .. <br />IIS,_ <br />a:! <br />'- <br />S <br />~ <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />-I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />8 <br />N <br />o <br />Z <br />c: <br />.. <br />.&: <br />.. <br />.!!.. <br />.- " <br />o~ <br />i~ <br />c .. <br />.iG .- <br />~~ <br />CI> .. <br />c:S <br />u:~ <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />I <br /> <br />UNIFIED SOIL CLASSIFICATION <br /> <br />M.tor diY_ens <br /> <br />.. <br />.. <br />'ij; <br />~ <br />. <br />'ij; <br />~ <br /> <br />c <br />o <br />'t; <br />.. ... <br />-. <br />~,~ <br />M.!! M <br />.~<ot <br />> . <br />",- 0 <br />o~z <br />.li <br />.I:.&: <br />c:.. <br />2" <br />..& <br />. .. <br />o. .. <br />~- <br /> <br />i <br />.!! c: <br />cut: <br />~ 0 <br />o,C <br />~ 0 <br />.. .. <br />u~ <br />oJ <br />- <br /> <br />;~ <br />:E~ <br />.&:,--; <br />..... <br />'i i:E <br />.. .- <br />-0- <br />~ ! 0 <br />:?Q. <br />C)Q. <br />~ <br /> <br />- <br />o <br /> <br />&- <br />-.. <br />li';; <br />o. . <br />-~ <br />!.", <br />.-"1 8~ <br />'0_0 <br />coZ <br />O)_c: <br />Cl)li2 <br />.&:.. <br />c:o. <br />... <br />.&:= <br />;e <br />o :: <br />~:- <br /> <br />i <br />-8~ <br />c: 0 <br />li c: <br />;~ <br />.!!.. <br />u'E <br />:.:; <br /> <br />- <br />Ii <br />.&: <br />c: <br />.. <br />.I: <br />.. <br />. <br />'- <br />o <br />~ <br /> <br />.. <br />c <br />B ;) <br />.!: ~ <br />-11I_ <br />'&:.8 <br />.i :0 ,!: <br />"'- <br />~.~o <br />cZR <br />5 <br /> <br />.. <br />> <br />.. <br />.;;; <br /> <br />o <br />In <br />c: <br />.. .. <br />>..c: <br />.... <br />i:l13 <br />'O.!! <br />c:.. <br />...- <br />~.5 <br />;a; <br />.; <br />r:r <br />:.:; <br />- <br /> <br />'0 <br />- <br />Ii <br />.I: <br />c: <br />.. <br />:; <br />.. <br />:s. <br />~ <br />I <br />I <br /> <br />s <br />c: <br />.. <br />.I: <br />... <br />.. '- <br />~.! <br />u: <br />~a <br />ca.~ <br />~.5 <br />in; <br />.; <br />r:r <br />:.:; <br /> <br />~,~ .. <br />]. ~~ <br />1:0 <br /> <br />Group <br />IIfmbol. <br /> <br />GW <br /> <br />Typical nam. <br /> <br />Well-graded gravels, gravel-sand <br />milltu,es. little 0' no fines <br /> <br />----~.- .-. <br /> <br />d <br />GM ~ <br /> <br />GP <br /> <br />GC <br /> <br />sw <br /> <br />SP <br /> <br />SC <br /> <br />ML <br /> <br />CL <br /> <br />OL <br /> <br />MH <br /> <br />CH <br /> <br />OH <br /> <br />Pt <br /> <br />,. ...-. ..-.-- <br /> <br />Poo"y grade<t g,avels, gravel. <br />sand mixtures, little or no fines <br /> <br />Silty gravels. gravel-sand-silt <br />mixtures <br /> <br />u <br /> <br />Clayey gravels. gravel.sand-clay <br />mixtures <br /> <br />Well1lraded sands, gravelly <br />sands. little or no fines <br /> <br />Poorly grad4K:I sands, gravelly <br />sands. little 0( no fines <br /> <br />Clayey sands, sand-clay mix- <br />tures <br /> <br />Inorganic silts and very fine <br />sands, ,ock flour, silty or clay- <br />ey fine sands or clayey silts <br />with slight plasticity <br /> <br />Inorganic clays of low to me- <br />dium plasticity. gravelly clays, <br />sandy clays. silty Clays. lean <br />clays <br /> <br />Organic silts and organic silty <br />Clays of low plasticity <br /> <br />Ino'ganic silts, micaceous or <br />diatomaceous fine sandy or <br />silty soils. elastic silts <br /> <br />Inorganic clays of high plas- <br />ticity, fat clays <br /> <br />Organic clays of medium to <br />high plasticity, organic silts <br /> <br />Peat and othe, highly o'ganic <br />soils <br /> <br />.. <br /> <br />SYSTEM <br /> <br />Laboratory d_ification crit...ia <br /> <br />'0 <br />OJ <br />c <br />1 <br />'" <br />o <br />CJ <br /> <br />, <br /> <br />I 2 <br />060 (OJO) <br />C =---greater than 4; CC2 XO between 1 and 3 <br />~ U D" Do. .. <br /> <br /> <br /> <br />I Not meeting all g,adation requirements for GW <br /> <br /><0 <br />::l <br />'0 <br />a> <br />c <br />:; <br />e. <br />~ <br />3; ~ ; <br />~:E13 <br />~~~ <br />a..o~~ <br />~~~.8 <br />:::E"E <br />~~~ ~I <br />. :: I <br /> <br />Atterbe,g limits below" A" <br />line or P.I.less than 4 <br /> <br />Atte,be,g limits above" A'. <br />line with P.I. g,eate, than 7 <br /> <br />Q; <br />.. <br />'y; <br />.. <br />> <br />.. <br />'y; <br /> <br />Gig <br />~ , <br />;) 0 <br />~z <br />'" c: <br />.~ ~ <br />c:.. <br />-; ... <br />o. .. <br />c:a= <br />E '" <br />o E <br />o. .. <br />- c <br />4> ,2 <br />I ~ g <br />01'- <br />'0:::' <br />c .. <br />... .. <br />'0 .!: <br />c:.... " <br />:J '0 i _ <br />'0 ~g . c <br />utct'lo..cu <br />&i:;ii~ . <br />~uCQuqJ_ <br />c"''''C''~C: <br />~&.~8.N~ <br />~ c: ~ Lt)'" .. <br />c.o~c:g8. <br />~ ~1:i~:N <br />.- .- fit .. QJ ~ <br />E~...~o.o <br />"'Q)~Glo... <br />:l Q..!! oJ :E It) <br />oo'~ <br /> <br />Above "A" line with P.I. <br />betvYeen 4 and 7 are bo,. <br />de,IiM C3Se$ requiring use <br />of dual symbols <br /> <br />060 (D3012 <br />Cu=-greater than 6; Cc. XD be~n 1 and 3 <br />010 DI0 60 <br /> <br />Not meeting all gradation requiremenlr lor SW <br /> <br />Attetberg limits below "A" <br />line or P.I. less than 4 <br /> <br />II Atterbe,g limits above "A" <br />line with P.I. g,eater than 7 <br />I <br /> <br />60 <br /> <br />I ._ -l- ____+ ---L . <br />~ For classification of flOellralOed <br />>-- soils and fine fraction of coarse- <br />50 _ grained soils. . <br />- Atte,berg limits plotting in <br />- hatched a,ea are borderline c1assi. ~. J I 'U <br />= fications requiring use of dual-:r <br />40 _ symbols. <br />- Equation of A-line: <br />- PI=Q.73 ILL - 201 <br />.---.- <br /> <br />>( <br />.. <br />'0 <br />.!: <br />~3O <br />'u <br />'i <br />iL <br /> <br />-~ <br /> <br />'""C"./ <br />.',:/ <br />~;~ <br />./ <br />/ <br /> <br />d <br />SM i-- Silty sands, sand-silt mixtures <br /> <br />u <br /> <br />- .__._-~. <br />20 <br />-- <br /> <br />CL <br /> <br />/ <br />10 I, / <br />!./ <br />7 ..u"i-----....~~~... <br />4 ..._.l'=!:-:~_~~~L a dOL I <br />0-'. ,.- I .--f- <br />o 10 20 30 40 50 <br /> <br />Liquid Limit <br /> <br />PI lISticity 08" <br /> <br />Limits plotting in hatched <br />zone with P.I. between 4 <br />and 7 are borderliM cases <br />requiring use of dual sym- <br />bols. <br /> <br />-r <br /> <br />/ <br />7 <br /> <br />7' <br />./ <br /> <br />7 <br />'7 <br />./ <br /> <br />,/ <br />./ <br />1/ <br /> <br />OH ar ci MH <br /> <br />I <br />i <br /> <br />T <br /> <br />60 <br /> <br />70 <br /> <br />80 <br /> <br />90 <br /> <br />100 <br />