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MOORE S TABER NORTHERN CALIFORNIA <br /> CONSULTING ENGINEERS AND GEOLOGISTS <br /> UNIFIED SOIL CLASSIFICATION <br /> Pt I OH J CH I MH OL I CL I ML SC I SM SP I SW GC I GM GP I GW <br /> Sands with fines Clean sands Grovels withfines Clean gravels <br /> Highly Silts and clays Silts and clays >12%fines <5%fines >'2%fines <5%flnes <br /> organic Liquid Ilmltgreater than 50 Liquid limit less than 500 0 <br /> Bolls Sands more than 50 /o of coarse Gravels more than 50/o of coarse <br /> _ fraction is smaller than NQ 4 sieve. fraction is larger than N24 sieve. <br /> Fine grained soils Coarse grained soils <br /> (More than 50%is smaller than NQ 200 sieve) (More than 50% is larger than NQ 200 sieve) <br /> LABORATORY CLASSIFICATION CRITERIA <br /> 2 <br /> X50 GW and SW- Cut oto greo ter than 4 for GW 8 6 for SW; C (D34) between Ili 3. <br /> WZ'Ln CH u Dp c 010 x De0 <br /> GPand SP- Clean gravel or sand not meeting requirements for GW and SW. <br /> > �,cGMdnd SM-Atterberg limits below*A7 line or P. I. less than 4. <br /> u `pftand <br /> GC and SC-Atterberg limits above "A' line with P 1. greater than 7. <br /> Fine Medium Coarse Fine coarse <br /> Fines (silt or clay) Cobbles Boulders <br /> d CL Bond sand I sand grovel gravel <br /> p o . <br /> ALL <br /> I "11 Sieve sizes � j•ML a oL <br /> 00 p 70 9b Classification of earth materials shown on this sheet is based on field inspection and <br /> LIOula LIMIT should not be construed to imply laboratory analysis unless so stated. <br /> MATERIAL SYMBOLS CONSISTENCY CLASSIFICATION <br /> ®Grovel ti N Peat or FOR SOILS <br /> organic matter <br /> According to the Standard Penetration Test <br /> IV i <br /> Sand Fill material N2 of blows Granular Cohesive <br /> Silt Shale 0-5 Very loose Very soft <br /> 6- 10 Loose Soft <br /> ® <br /> Clay Sandstone <br /> 11 -20 Semicompact Stiff <br /> Sandy clay or "PI <br /> Limestone <br /> clayey sand 21 - 35 Compact Very stiff <br /> ' Sandy silt or ®Metamorphic 36-70 Dense Hard <br /> Uj silty sand rock <br /> Silty clay or >70 Very dense Very hard <br /> rA c loyey silt Igneous rock Where standard penetration test has not been performed, <br /> consistencies shown on logs are estimated. <br /> LEGEND OF BORING LEGEND OF PENETRATION TEST <br /> 15 <br /> 38 <br /> � 1 <br /> Bulk 30 <br /> sample <br /> 24 <br /> Conformable trial n e 35 _i GO S. <br /> II I <br /> Drive27sampGWApproximate material chane <br /> i <br /> 48 <br /> Casing–J, Unconformable material chonge o 0 4 <br /> setBlows per fo t I BPF. <br /> 10— Bottom of borin Us ng I Ib 10 <br /> _ _Q� ha mer wi, I Graphic representation of <br /> 30,jdrop= 3 0 driving rate. <br /> ft/Ib blw) <br /> tr 1 Legend <br />