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s .8. "Y <br /> i <br /> EAEA ENGINEERING. <br /> SCIENCE,AND UNIFIED SOIL CLASSIF=ICATION SYSTEM AND <br /> TECHNOLOGY SYMBOLS USED ON EA DRILL LOGS <br /> Major Divisions Typical Names <br /> Wall gradod gravels with or without sand,little or <br /> Clean gravels GW no lines. <br /> GRAVELS with little or no �'�'�' Poorly graded gravels with or without sand,filila <br /> lines GP or no fines. <br /> � � more than half <br /> O 0as Coarse fraction <br /> GM Silly gravals,silty gravels with sand. <br /> U) m > gravels with <br /> o g T is larger than _ <br /> Z E a No.4 sieve size over 12%fines GC Clayey gravels,clayey gravels with sand. <br /> Wall graded sands with or without gravot,little or <br /> O c SW no fines. <br /> L5 z SANDS clean sands with <br /> m cCo little 4r n�fines •'• Poorly graded sands with or without gravels, <br /> a: � SP litife or no fines. <br /> more than half <br /> U Coarse fraction sM Silly sands with or without gravel, <br /> is smallor Thar, sands wills <br /> No. 4 sieve Size over 12%fines SC Clayey sands with or without gravel. <br /> Inorganic silts and very fine sands,rock flour, <br /> ML sifts with sands and gravels. <br /> U) SILTS AND CLAYS Inorganic clays of low to medium plasticity,clays <br /> `u t liquid limit 50%or less CL with sands and gravals,loan clays. <br /> 0 — <br /> oOL Organic sills or clays of tow plasticily. <br /> uJ N <br /> =a lnorgani:silts.micaceous or diatomacious,fine <br /> L N MH sandy or silty soils,olaslic silts. <br /> wiz _.� <br /> SILTS AND CLAYS CH Inorganic clays of high plasticity,fat clays, <br /> z m liquid limit greater than 50% <br /> LL o <br /> E Organic silts or clays of medium to high <br /> OH plasticity. <br /> HIGHLY ORGANIC SOILS pt Peat and other highly organic soils, <br /> DRILL LOG <br /> SYMBOLS ROCK TYPES <br /> Limestone <br /> \Z First encountered water _ <br /> Static groundwater H., Dolomte <br /> Portland cement — ——————— Mudstona <br /> — <br /> gentanitopoElals =_------ Siitstorno <br /> Sand ' • ' ' <br /> _ <br /> Blank Sandstone <br /> Screened casing <br /> Ignoous <br />