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i <br /> WATER WORK <br /> METHOD OF SOIL CLASSIFICATION <br /> MAJOR DIVISIONS SYMBOLS TYPICAL NAMES <br /> GV WELL GRADED GRAVELS DR GRAVEL-SAND MTLR M LITTLE OR NO FOCI <br /> Cyt GRAVELS <br /> M GP i; POORLY GRADED GRAVELS OR GRAVEL.-SAND IO%TIRES,LITTLE GR NO FINES <br /> d^� 001[ THAN Im Ir GM SILTY GRAVELS, GRAVEL-SAe�^SRT MINIM=ca'm THNLT>k) <br /> IyJ Ip 4 mtw 3= <br /> Z GC CLAYEY GRAVELS GRAVEL-SAND-CLAY MIXTURES <br /> LO b Sw VELL GRADED SANDS OR GRAVELY SANDS.LITTLE OR NO nNEI <br /> CAF s S—ANDS <br /> a SP Pm RLY GRADED SANDS DR GRAVELY SAND$LITTLE OR NO FDcS <br /> C3 @me TNIN 102 Or SM SILTY SANDS SAND-SILT )U1[TIl;tES <br /> L) NSYHIE FRACTION< <br /> Mm 4 SIM Z= <br /> SC CLAYEY SANDS SAMA-CLAY MIXTURES <br /> ML INORWIOC SILTS AND VERY FD4C SANDS; ROCK FLuvvL SILTY OR mAIEY <br /> J ..SILTS & CLAYS, "ME SANDS OR CLAYEY SILTS VITH SLIGlff PLASTICITY <br /> INORGANIC CLAYS OF LOW TO MEDIUM PLASTICITf (RAVELY CLAYS <br /> LL<5Q CL SANDY CLAYS, SILTY CLAYS,LEAN CLAYS <br /> H� <br /> ,�OL ihi' Mc—IC:—IC: ST <br /> SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br /> LTJ <br /> Q INORGANIC SILTS.MICACEOUS OR DIATONACCCOUS FOE SANDY CR SILTY <br /> MH <br /> 5 SILTS & CLAYS StaLS.ELASTIC SILTS <br /> Z CH INORGANIC CLAYS OF Hips PLASTICITY,FAT CLAYS <br /> L6 Lir OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY ORGANIC SILTY CLAM <br /> ORGANIC SILTS <br /> HIGHLY E3RC,ANIC SUM Pt PEAT AND OTHER HIGHLY ORGAIRC =L$ <br /> CLASSIFICATION CHART <br /> ( UNIFIED SAIL CLASSITICATI13N SYSTEM ) <br /> RANGE: 13F GRAIN SIZES <br /> CLASSIFICATION US.SIANDARD GRAIN SITE SANDS AND GRAVELS BLOVS/FOOT <br /> SIEVE SIZE IN MILLIMETERS <br /> VERY LOOSE 0 - 4 <br /> BOULDERS ABOVE 12' AlCIVE 77 LOOSE 4 - ID <br /> COBBLES 12' 10 r 303 T9 76.2 TEDIUM DEME 10 - 30 <br /> DENSE 30 - 50 <br /> GRAVEL 3 TO N0. 4 76.2 TO 676 VERY DENSE OVER 30 <br /> COARSE 3' TO IIV 762 TO 191 <br /> FINE 3/4 TO ND. 4 193 TO 4.76 RELATIVE DENSITY <br /> SAND NO. 4 TO IQ 8DD 4,760 TO U74 SILTS AND CLAYS BLOVS/FOOT <br /> COARSE MD. 4 TO NIL 10 4760 TO 2= <br /> MEDIUM NO.IO TO NM 40 0400 TO 0.420 VERY SOFT 0 - 2 <br /> FINC NO. 40 TO NO. 200 0.420 TO 0474 <br /> SOFT 2 - a <br /> Muum STIFF 4 - 0 <br /> SILT i CLAY BELOW H$ i0D DELOW 0474 SYIFF • - 16 <br /> GRAIN SIZE CHART VERY STIFF 16 - 32 <br /> HARD OVER 32 <br /> r NUMBER or BLOWS OF 140 P"D HAMMER FALLING 30 INCHES TO DRIVE A CONSISTENCY <br /> 2 INCH CA (1-3/0 INCH I.D.) SPLIT SPOON (^STN D-1586) <br /> PAGE CF <br />