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Lake Front <br /> Ramsey,Minnesota <br /> INTII (Project No. 18JMSIP05470.000 <br /> CLASSIFICATION OF SOULS FOR ENGINEERING PURPOSES <br /> ASTM Designation D-2487 and D2488(Unified Soil Classification System) <br /> Major Divisions Group Typical Name Classification Criteria <br /> Symbol <br /> N Well-graded gravels and N Cu=D60/D10 greater than 4. <br /> v GW gravel-sand mixtures,little <br /> > Cz=(D30)2/(D10 x D60)between 1&3. <br /> or no fines. <br /> a <br /> L - <br /> > <br /> a c Poorly graded gravels and <br /> a GP gravel-sand mixtures,little v Not meeting both criteria for GW materials. <br /> u <br /> O o or no fines. o <br /> v U z ++ <br /> > i o v U Atterberg limits <br /> a) v o c Silty gravels,gravel-sand- Atterberg limits <br /> N GM a u below"A"line,or <br /> 0 o a " silt mixtures. M plotting in hatched <br /> oN S Ci P.I.less than 4. <br /> ±2 area are borderline <br /> a 3 d C Atterberg limits <br /> o c a U L classifications <br /> z o a Clayey gravels,gravel-sand- 0 cs a5 above"A"line <br /> z' c 0 > GC -2 requiring use of dual <br /> o �n N clay mixtures. o o with P.I.greater s mbols. <br /> v ova 0 (D m than 7. y <br /> c <br /> M n <br /> C7 'Y c Well-graded sands and d a; v a' Cu=D60/D10 greater than 6. <br /> v o SW gravelly sands,little or no > in <br /> o � fines. a 0; 00 o Cz-(D30)2/(D10 x D60)between 1&3. <br /> O 0 M . 0 r4 <br /> VLn N ..... .._. .._. ..... ....._. O ON O o .._. ..... ..... .._. ..._. <br /> QJ > Poorly-graded sands and d z <br /> Y o °-� SIR gravelly sands,little or no m z b° •c Not meeting both criteria for SW materials. <br /> M W.N <br /> v w a fines. c v CL <br /> z = a Atterberg limits <br /> r^ v Silty sands,sand-silt c N ti o g Atterberg limits <br /> 00 t SM o £ below"A"line,or plotting in hatched <br /> c v mixtures. ro c p g <br /> 3 w o P.I.less than 4. area are borderline <br /> N v £ Atterberg limits classifications <br /> v c LL Clayey sands,sand-clay m o o Z above"A"line requiring use of dual <br /> n SC mixtures. u J " ° with P.I.>7. symbols.. <br /> Inorganic silts,very fine <br /> N MIL sands,rock flour,silty or o <br /> v clayey fine sands. <br /> N p o <br /> Inorganic clays of low to a <br /> * medium plasticity,gravelly co <br /> 0 <br /> o CL clays,sandy clays,silty o <br /> > <br /> v 4 E clays,lean clays. - o <br /> ti <br /> N J _ <br /> N <br /> U <br /> tq r4 'D ..... .._. .._. ..... ....._. R CD <br /> H0 OL Organic silts and organic U ° <br /> Q silty clays of low plasticity. m o <br /> v a <br /> v _ <br /> o Q L Inorganic silts,micaceous a r - o <br /> v \o MH or diatomaceous fine sands u 9 <br /> � or silts,elastic silts. � <br /> .� <br /> a M <br /> oInorganic clays of high <br /> v M = ,n CH plasticity,fat clays. - <br /> E F <br /> N <br /> N OH Organic clays of medium to = o J <br /> high plasticity. - o <br /> J <br /> O <br /> T U 0 O O O O O O <br /> t � •LA Peat,muck and other <br /> on O Pt highly organic soils. ;I�1� Ulol3s�ld <br />