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DEFINITION OF TERMS <br /> PRIMARY DIVISIONS SYMBOLS SECONDARY DIVISIONS <br /> GRAVELS CLEAN v0 GW wai.gracsod gravels gravei-sand mixtures little or no <br /> MORE THAN two <br /> GRAVELS <br /> J ¢ o (LESS THAN 6 Poorly graded gravels or gravel-send mlxturas Male or <br /> NW a COARSE HALF OF d% FINES) GP no fates <br /> S O FRACTION IS GM Silly gravels prav0-sand-awt mixtures nonplastic <br />' GRAVEL Imes <br /> LLI = N LARGER THAN WITH FINES Clayey gravels gray*4-aand-clay mixtures plastic <br /> Z t co NO 4 SIEVE GC lines <br /> LLC F- WCLEAN <br /> O =¢ W SANDS SANDS ecce SW Well graded sands gravely sands 1111M or no fires <br /> W O y MORE THAN (LESS THAN <br /> ' to T S HALF OF d% FINES) SP Poory graded sands or grsyslly sand& lolls or no lines <br /> fs r COARSE <br /> O¢m FRACTION IS SANDS Hll <br /> SM Silly sands sand-sill mixtures nonplastic limas <br /> V O SMALLER THAN WITH FINES <br /> > NO 4 SIEVE SC Clayey sands sand-clay mixtures plastic lines <br /> 0 W Inorganic silts and very fine sands rock flour silty or <br /> J t+. ¢ N ML clayey fine sods or Clayey sill* with &light plaalicity <br /> O W 0 SILTS AND CLAYS <br /> u• W LIQUID LIMIT t8 CL Inorganic clays o1 low to medium plasticity gravelly <br /> A S clays sandy clays, loan clays <br /> C z W LESS THAN 50% <br /> ' µl =a a OL Orgenio slits and organic *Illy clays of low plasticity <br /> .'C zao 9 <br /> 2 <br /> :d MH Inoroanic silt* micaceous or diatomaceous fine sandy <br /> 0: � � O SILTS AND CLAYS or ■uty soils somatic •uta <br /> Ill <br /> LUWaz <br /> W O r z LIQUID LIMIT IS CH Inorganic clays of high Plasticity fat clays <br /> ' .Z t 11 GREATER THAN 50 <br /> >: z i r OH Organic clays 0T medium to high plasticity organlG <br /> IL t- I slits <br /> HIGHLY ORGANIC SOILS Pt Peat and other highly organic sous <br /> GRAIN SIZES <br /> SILTS AND CLAYS SAND GRAVEL COBBLES BOULDERS <br /> FINE I MEDIUM I COARSE I FINE I COARSE <br /> 200 40 10 4 3/4' 3' 12' <br /> U S STANDARD SERIES SIEVE CLEAR SQUARE SIEVE OPENINGS <br /> ' RELATIVE DENSITY CONSISTENCY <br /> SANDS GRAVELS AMIDBLOWSJFOOT* CLAYS ANDSTRENGTH" BLOWS/FOOT"` <br /> NON-PLASTIC SILTS PLASTIC SILTS <br /> VERY SOFT 0 - it 0 - 2 <br /> ' VERY LOOSE 0 - 4 SOFT 114 - 1/2 2 - 4 <br /> LOOSE 4 - 10 FIRM 112 - 1 4 - 8 <br /> MEDIUM DENSE t0 - 30 STIFF 1 - 2 a - 18 <br /> DENSE 30 - 60 VERY STIFF 2 - 4 IS - 32 <br /> VERY DENSE OVER 60 HARD OVER 4 OVER 32 <br /> ' *NUMBER OF BLOWS OF 140 POUND HAMMER FALLING 30-INCHE3 TO DRIVE A 2-INCH O D <br /> (1-3/8-INCH I D ) SPLIT SPOON (ASTM D-1586) <br /> "UNCONFINED COMPRESSIVE STRENGTH IN TONS/SO FT AS DETERMINED BY LABORATORY <br /> ' TESTING OR APPROXIMATED BY THE STANDARD PENETRATION TEST (ASTM D-1686) POCKET <br /> PENETROMETER TORVANE OR VISUAL OBSERVATION <br /> TYPE OF SAMPLES <br /> ' ®RING SAMPLE 11DSTANDARDPENETRATION TEST. GEOCHEMICAL SAMPLE <br /> DRILLING NOTES <br /> ' 1 SAMPLING AND BLOW COUNTS <br /> RING SAMPLER - NUMBER OF BLOWS PER FOOT OF A 140 POUND HAMMER <br /> FALLING 30 INCHES <br /> STANDARD PENETRATION TEST - NUMBER OF BLOWS PER 12 INCHES SHOWN <br /> GEOCHEMICAL SAMPLER - 2 5 1 0 TUBE DRIVEN BY 140 POUND HAMMER <br /> FALLING 30 INCHES <br /> 2 p p - POCKET PENETROMETER (TONSISOUARE FOOT) <br /> KEY TO LOGS <br /> 1011 NO DATE FIGURE <br /> ' 13-5782-026-00-00 JANUARY 198 - <br /> HYDROTECH CONSULTANTS, INC <br />