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111 i= FH OD OF `, OIL CLA SSI f=I C ; `ION <br />' MAJOR DIVISIONS ISYMBOLSI TYPICAL NAMES <br /> GWp WEGRADED GRAVELS OR GRAVEL-SAND MIXTUPES, LITTLE OR NO FINES <br /> I 11 <br />' N GRAVELS Ana I <br /> GP oaa POORLY GRADED GRAVELS OR GRAVEL-SAND MIXTURES LITTLE OR NO FINES I <br /> �srs <br /> C) w a <br /> N <br /> 0 $ (MCAE THAN 1/2 CF GM a SILTY GRAVELS GRAVEL-SAND-SILT MIXTURES <br />' i n COARSE FAACTCN > <br /> LLJ ° AO A SEVE SIZE) o <br /> Z A GC !o CLAYEY GRAVELS GRAVEL-SAND-CLAY MIXTURES <br /> < <br /> (� N SW WELL GRADED SANDS OR GRAVELY SANDS, LITTLE OR NO FINES j <br />' 6 SANDS <br /> ^SP S l a POORLY GRADED SANDS OR GRAVELY SANDS, U7L£ OR NO FINES <br /> Q a_- 1"h"'1 <br />' (ueR: THAN 1/2 OF SSM S€LTY SANDS, SAND-SILT MIXTURES <br /> COARSE FRACTI04 < <br /> NO a S,EVE SIZE) r <br /> S[' CLAYEY SANDS SAND-CLAY MIXTURES <br /> INORGANIC SILTS AND VERY FINE SANDS ROCK FLOWER, SILTY OR CLAYEY <br /> N ML I i I i) FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> `_3 SILTS L CLAYS r <br /> INORGANIC CLAYS OF LOW TO MEDIUM PLASTtCIT" GRAVELY CLAYS, I <br /> Or CL <br /> 0 I SANDY CLAYS, SILTY CLAYS LEAN CLAYS <br />' LL<50 II:IIq <br /> , <br /> v OL ii:iii ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LCw PLASTICITY <br /> INORGANIC SILTS MICACEOUS OR DIATOMACECGUS FINE SANDY OR SILTY <br /> MH SOILS ELASTIC SILTS <br /> SILTS & CLAYS �! <br /> LJ x CH / €NOPGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS <br /> LL>50 <br /> ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY ORGANIC SILTY CLAYS <br />' <br /> OH ORGANIC SILTS ' <br /> HIGHLY ORGANIC SOILS pt PEAT AND OTHER HIGHLY ORGANIC SOILS � <br /> I <br />' CLASSIFICATION CHART <br /> ( <br /> 1114IFIED SOIL CLASSIFICATION SYSTEM ) <br />' RANGE OF GRAIN SIZES � ----_. <br /> CLASSIFICATION US STANDARD GRAIN SIZE i SANDS AND GRAVELS 8LOW5�FODT <br /> SIEVE SIZE IN MILLIMETERS I I VERY LOOSE ❑ 4 <br />' BOULDEKS ABOVE 12" AEOVE 13" I LOOSE 4 - 10 <br /> CO$8LE5 12" TO 3" 305 TO 76 2 MEDIUM DENSE 10 - 30 j <br /> DENSE 30 - 50 <br /> -GRAVEL 3" TO NO 4 76 2 TO 476 VERY DENSE OVER 50 <br /> COARSE 31 TO 1/4" 76 2 TO 191 <br /> FINE 3/4" TO '40 4 19 1 TO 476 RELATIVE ,DENSITY <br />' SAND kC 4 TO *10 200 4750 TO 0074 SILTS AND CLAYS BLOWS/FOOT <br /> COARSZ NO 4 TO NO 10 4 760 TO 2000 <br /> MEDILM NO �O TO NO AO 2 OCO TO 0 420 I VEP( SOFT 0 - 2 <br />' FINE 4� 40 TO v0 200 0 d70 TO 0 074 I <br /> _01 2 - 4 <br /> { � I <br /> MEDIU 8 <br /> sit.-, & CL.-.Y { 3ELOW NO 200— B2LCW m 0 074--- i J STIFF d - <br /> tt TIFF 8 - to <br />' GR41V SIZE CHART <br /> VERY STIFF 16 32 <br /> - <br /> � HARD OVER 32 <br /> + NUMSER Or B_-_'NS Or 140 'OUND HAMMER FALLING 30 INCHES TO DRIVE A CONSISTENCY <br /> 2 INCH O D (1-3/3 INCH I D) SPLIT SPOON (ASTM D-1586) <br /> t <br />