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PRIMARY DIVISIONS so PE IL <br /> TYLEGEND —7ECO)eARY DIVISIONS <br /> CLEAN GW <br /> Well graded gravels, gravel-sand mixtures, little or no fines, <br /> GRAVELS GRAVELS ti, ti.ti <br /> MORE THAN HAW GP Poorly graded gravels or gravel-sand mixtures,little or no fines. <br /> OP COARSE FRAcnoN, <br /> 3 LARGER 7VAN GRAVEL GM6 tjffljfj4 Silty gravels,gravel-sand-silt mixtures,non-plastic fines. <br /> NO.4 SIEVE <br /> w 0 Z WITH <br /> z <br /> FINES_ GC, Clayey gravels,gravel-sand-clay mixtures,plastic fines. <br /> ff CLEAN SW Well graded sands, gravelly sands,little or no fines. <br /> cs <br /> SANDS <br /> SANDS SP M: Poorly graded sands or gravelly sands, little or no fines. <br /> 52 MORE THAN HALF % <br /> O 0 OF COARSE FMCUON <br /> IS SWAUER THAN SANDS S Silty sands,sand-silt mboures,non-plastic fines. <br /> NO.4 SIEVE WITH <br /> FINES SC Clayey sands,sand-day mixtures, plastic fines. <br /> ML Inorganic silts and very fine sands, rock our,silty or Clayey fine <br /> sands or clavey silts with slight fastici <br /> 0 16 SILTS AND CLAYS Inorganic clays of low to medium plasticity,gravelly clays, sandy <br /> 0 UQUM LNff IS LESS THAN 50% CL clayCsilt y clMs, lean clays, <br /> Ow ffl :1TITI <br /> OLOrganic silts and organic silty clays of low plasticity. <br /> Z <br /> Z14§ Inorganic silts, micaceous or diatomaceous fine sandy or silty soils, <br /> .g 9 MH elastic Silts. <br /> O -0 1 SILTS AND CLAYS <br /> z X CH:: Inorganic clays of high plasticity,fat clays. <br /> z UQUIL)LBGT IS OMTER THAN 50% <br /> OH ' j j j j Organic clays of medium to high plasticity,organic silts. <br /> HIGHLY ORGANIC SOILS Pt Peat and Other highly organic soils. <br /> DEFINITION OF TERMS <br /> U.S. STANDARD SERIES SIEVE CLEAR SQUARE SIEVE OPENINGS <br /> 200 40 i, <br /> 10 4 3/4" 3' 12' <br /> SAND GRAVEL <br /> SILTS AND CLAY MEDIUM COBBLES BOULDERS <br /> FINE COARSE FINE COARSE <br /> GRAIN SIZES <br /> ITRZAGRI <br /> SPLIT SPOON MODIFIED CALIFORNIASHELBY TUBE <br /> STANDARD PENETRATIONPITCHER TUBE <br /> SAMPLERS <br /> SAND AND GRAVEL BLOWS/FOOT SILTS AND CLAYS STRENGTH BLOWS/FOOT* <br /> VERY LOOSE o-4 VERY SOFT 0- 1/4 0-2 <br /> LOOSE 4- 10 SOFT 1/4- 1/2 2-4 <br /> MEDIUM DENSE 10-30 MEDIUM STIFF 1/2- 1 4 -8 <br /> DENSE 30-50 STIFF 1 - 2 8- 16 <br /> VERY DENSE OVER 50; VERY STIFF 2-4 16-32 <br /> HARD OVER 4 OVER 32 <br /> RELATIVE DENSITY CONSISTENCY <br /> a Number of blows of 140 pound hammer falling 30 inches to drive a 2 inch O.D.(1-3/8 inch J.D-)split spoon(ASTM D-1586). <br /> Unconfined compressive strength in torWsq-fL as determined by laboratory testing or approximated by the standard Penetration <br /> test CASTM D-1580,pocket penetrometer,torvane,or visual observation. <br /> KEY To EXPLORATORY BORING LOGS <br /> Unified Soil Classification System(ASTM D-2487) <br /> :WEST LANE PLAZA <br /> Stockton, California <br /> LO"EVASSOCIATES FIGURE A-1 <br /> Environmentol/Geotechnical/Engirteering Services 800-113A, November 1993 <br />