Laserfiche WebLink
CLASSIFICATION OF SOILS FOR ENGINEERING PURPOSES <br />ASTM DESIGNATION D-2487 <br />Major Divisions <br />L <br />N <br />T � <br />r <br />'Q' <br />N O <br />{VV <br />r <br />v <br />N <br />L <br />yy,, <br />O <br />^.�A <br />CA <br />Nignly organic soils <br />Group <br />Symbols <br />Typical <br />Newts <br />Classification Criteria <br />Well -graded gravels and <br />Cu - De0 / D10 Greater than 4 <br />OA <br />gravel -sand mixtures. <br />little or no fines <br />(D )! <br />Ca - DIDX DOD Between I and 3 <br />� N <br />_ In e <br />_ <br />Poorly graded gravels and <br />GP <br />ravel -sand mixtures, <br />Not mmeeting both criteria for OY <br />little or no fines <br />o <br />Sil gqravels gravel- <br />Atterbe limits plot <br />below »An line or Atterberg limits plot- <br />• " <br />GN <br />$an slit mi;Lres <br />plesticity index Ling in hatched area <br />e+ <br />Clayey gravels, gravel- <br />jass than 4 art borderline <br />s p o classlficattons n- <br />b•�•�t <br />r� <br />above A line and quiring use of dual <br />• <br />GC <br />sand -clay mixtures <br />plasticity index symbols <br />o <br />a <br />greater than 7 <br />Well -graded sands and <br />Cu - De0 / D10 Greater than 6 <br />1 <br />� N <br />8N <br />gravelly sands, little <br />or no fines <br />Ca - Between I and 3 <br />g <br />Q M <br />Die <br />Poorly graded sands and <br />5 <br />9P <br />gravelly sands. little <br />Not meeting both criteria for 8M <br />N <br />or no fines <br />= <br />to ` s <br />8N <br />Silty sands. sand -silt <br />Atterberg limits plot <br />below »A line or Attarbtrg limits plot- <br />M <br />M, <br />mixtures <br />plasticity index less Ling in hatched area <br />than 4 :are borderline clan- <br />5 <br />8C <br />Clayey sands. sand -clay <br />»s plot sill cations squtring <br />above A line and use of symbol <br />s <br />Idxtures <br />greater <br />thann�ax <br />Inorganic silts, rock <br />flour, silty or clayey <br />At <br />fine sand <br />Inorganic clays of low o <br />60 <br />medium plasticity, yrav- <br />a <br />e11y clays, sandy clays, <br />silty clays, lean clays <br />SO <br />Organic silts and organic <br />OL silty clays of low <br />C' <br />t� <br />Inorganic clays of high <br />plasticity, fat clays <br />Organic clays of medium <br />Off to high plasticity <br />40 <br />30 <br />20 <br />►uttecw esirt <br />ftr eta"irtoQtioe of fie - <br />of e0myefra(Med #age and fine�°Otion <br />acea,b.,e tt+.tu totc{rq in <br />ha:Qhad amamIderttl1/ <br />, <br />eta..crcmtion. MqWcrt� <br />r.. of dMat eywW.. <br />iquation of A-1 _ <br />M <br />I� <br />0O <br />10 20 30 40 SO 60 70 SO 90 100 <br />Liquid <br />Peat, ruck and other <br />Pt highly organic molls Visual -men wl identification <br />BRAINGUN <br />Ziwit <br />� <br />�snNo <br />