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L <br /> 4 t01454a/®H.�/�4 <br /> �y <br /> METHOD OF SOIL CLASSIFICATION <br /> MAJOR DIVISI❑NS SYMBOLS TYPICAL NAMES <br /> GW WELL GRADED GRAVCLS 134 GRAVEL-SAND H1%TURCS, LITTLE OR NO FINES <br /> GRAVELS <br /> [(Jj V)'�-^ - GP 'e� POORLY GRADED GRAVELS DR GRAVCL^SONO NI%TURES, LITTLE 00. NO FINES <br /> I -i ' <br /> C7 W <br /> IMC TNW U2 DF GM o' I SILTY GRAVELS,GRAVEL-SAND-SILT HI%TURCS <br /> q G COrASE FRACTION 3 <br /> W Na 4 SIEVE SISC7 <br /> � GC a CLAYEY GRAVELS, GRAVEL-SAND-CLAY MIXTURES <br /> d <br /> af S W 'Q#. WELL GRADED SANDS GR GRAVELY SANDS, LITTLE OR NO FINES <br /> WS� <br /> N^ SP PGORLY GRADED SAlIDS OR GRAVELY SANDS.LITTLE OR NO FINES <br /> n�• <br /> • p w IfgRC THAM v2 Cr SM t SILTY SANDS, SAND-$ILT MIXTURES <br /> LJ% C%4RSC FRACT10M C <br /> [ HQ 4 STEVC SIZE) SC <br /> CLAYEY SANDS, SAND-CLAY MIXTURES <br /> H INORGANIC SILTS AND VERY FINE SANDS, ROCK FLtlVER, SILTY OR CLAYEY <br /> ML I FINE SAN111 OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> SILTS & CLAYS '1 <br /> INORGANIC CLAYS OF L;3W TO MEDIUM PLASTICITY.GRAVELY CLAYS. <br /> fl'^ CL SANDY CLAYS, SILTY CLAYS, LEAN CLAYS <br /> 5a v� LL<50 <br /> q g -^ GL i' CRGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br /> r <br /> Q� INGRGANIC SILTS.NiCACEOUS p0.D[A"CMhLECOUS FINE SANDY OR SILTY <br /> MH SOILS. ELASTIC SILTS <br /> ce <br /> SILTS & CLAYS <br /> ` <br /> CH INORGANIC CLAYS OF HIGH PLASTICITY,FAT CLAYS <br /> z L050 <br /> ILTY CLAYS, <br /> ❑H ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY,ORGANIC S <br /> ` ORGANIC SILTS <br /> �*MHLY ORGANIC SOILS pt PEAT AND OTHER HIGHLY ORGANIC SOILS <br /> CLASSIFICATION CHART <br /> C U141FIED SOIL CLASSIFICATION SYSTEM ) <br /> FCANGF, CIF GRAIN SIZES SANDS AND GRAVELS BLOVS/FOOT <br /> CLASSIFICATION U-S STANDARD GRAIN SIZE <br /> SIEVE SIIE IN 4ILLIM£TERS VERY LOOSE 0 - 4 <br /> DCII"..OERS A?OVE l2' ABOVE 13• LOOSE 4 - 10 <br /> . Hzv[uH DENSE 10 - 30 <br /> COBBLES 12, TO 3' 305 TO 76.2 DENSE 30 - 50 <br /> GRAVEL 3• TO NO. 4 76.2 TO 4.76 VERY DENSE OVER 50 <br /> COARSC 3' TO 1/4• 76,2 TO 19.1 <br /> FIN£ 3/4' TO N0. 4 19.1 TO 4.76 RELATIVE DENSITY <br /> SAND NO, 4 TO NO.200 4.760 TO 0.074 SILTS AND CLAYS SLOWS/FOOT <br /> �3• COARSE NO. 4 TO NO. 10 4.760 TO 2.000 <br /> MEDIUM N6 10 TO NO. 40 2,000 TO 0.420 VERY SOFT 0 - 2 <br /> FINE NO. 40 TO N0.200 0.420 TO 0.074 SOFT 2 - 4 <br /> MEDIUM STIFF 4 - 0 <br /> - <br /> biLE-6-CLAY BELOW NO. 2c0 BELOW 0.074 STIFF D - l6 <br /> VERY STIFF 16 - 32 <br /> GRAIN SIZE CHART HARD OVER 32 <br /> .`NUMBER OF BLOWS OF IAO POUND HAMMER FALLING 30 INCHES TD DRIVE A CONSISTENCY <br /> 2 INCH 0.0. CI-3/8 INCH LOA SPLIT SPOON (ASTM D-ISS6). <br /> PAGE OF <br />