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WATER WORK <br /> 7 <br /> METHOD OF SOIL CLASSIFICATION <br /> MAJOR DIVISIONS SYMBOLS TYPICAL NAMES <br /> GW WELL GRADED GRAVELS ORGRAVEL-SARI► MDCTWES LITTLE OR NO rVdES <br /> GRAVELS n <br /> G �` POORLY GRADED GRAVELS OR GRAVEL-SAND =TIRI=S LITTLE Oi 10 rims <br /> to " *ME THAN uz IR GMSILTY GAVELS, GRAVEL-SAIM-SCLT MIXTURES <br /> Z Ha 4=eve srm GCc CLAYEY GRAVELS. GRAVEL-SAND-CLAY MDCTURES <br /> J <br /> SW VELL GRADED SANDS OR GRAVELY SANDS, LITTLE 13R NO FINES <br /> Lop SANDS <br /> N] �� SP 's POORLY GRADED SANDS OR GRAVELY SANDS LITTLE OR NQ FIDS <br /> O> <br /> Q OME TKW SA SM SCLTY SANDS, SAND-SILT MIXTURES <br /> RS <br /> L) CDAE FRACTION< <br /> VE <br /> Na+ S1EVIMNT! <br /> Sc CLAYEY SANDS; SA -CLAY NIxTURES <br /> AN <br /> I <br /> _ INORGIC SILTS AND VERY FINE SATOIIS. ROCK FLCIVM SILTY AOR CLAYEY <br /> (/)�+ ML Z FINE SANDS OR CLAYEY SILTS WITH SLIGfr PLASTICITY <br /> -J SILTS & CLAYS <br /> G INORGANIC CLAYS OF LOV TO MEDIUM PLASTICITY, GRAVELY CLAYS. <br /> C3 8 CL SANDY CLAYS, SILTY CLAYS, LEAN CLAYS <br /> LL<50 <br /> �v � GL ;i�� ORLANIC SILTS AND ORGANIC SILTY CLAYS DF LOW PLASTICTTY <br /> r INORGANIC SILTS. MICACEOUS OR DIATOMACECOUS FM SANDY 1R SILTY <br /> . MH SCOL& ELASTIC SILTS <br /> t SILTS & CLAYS <br /> Lil CH INORGANIC CLAYS OF NIGH PLASTICITY, FAT CLAYS <br /> 1 ORGANIC CLAYS IF MEDIUM TO 93GH PLASTICITY, ORGANIC SILTY CLAYS. <br /> 4' OH ���� ORGANIC SILTS <br /> t <br /> HIGHLY ORGANIC SOILS Pt PEAT AND OTHER MMHLY ORGANIC SOILS <br /> i <br /> CLASSIFICATION CHART <br /> C UNIFIED SOIL CLASSIFICATION SYSTEM ) <br /> RANGE OF GRAIN SIZES <br /> CLASSIFICATION LLS. STANDARD GRAIN SIZE SANDS AND GRAVELS BLDVS/FOOT <br /> SIEVE SIZE IN MILL.IFETERS VERY LOOSE 0 - 4 <br /> i BOULDERS ABOVE t2' ABOVE 13' L[IISE 4 - 3o <br /> COBBLES 12, TO 3' 305 TO 762 i£DIUN DENSE 10 - 30 <br /> DENSE 30 - 50 <br /> GRAVEL 3' TO NO. 4 76.2 TO 4.76 VERY DENSE OVER 50 <br /> COARSE 3' TO 1/4' 762 TD 191 <br /> FINE 3/4' TD NO. 4 I91 TO 476 RELATIVE DENSITY <br /> SAND N[1 4 TO Na 200 4,760 TO 0.074 SILTS AND CLAYS BLOVS/F MT <br /> COARSE NEL 4 TO 101 10 4760 TO 2.000 <br /> MEDIUM N[L 10 TO N[L 40 2AOO To 0.420 VERY SIFT 0 - 2 <br /> FINE NO. 40 TO NO. 200 0.420 TO 0474 <br /> ICSFT 2 - 4 <br /> MEDCUM sTIFF 4 - 0 <br /> SILT & CLAY BELOW N[L 200 BELOW 0.074 <br /> STOFF Ei - L6 <br /> VERY STIFF 16 - 32 <br /> � GRAIN SIDE CHART HARD Ovlra; 32 <br /> + NUMBER 13F DLCIWS OF 140 POUND HAMMER FALLING 30 INCHES TO DRIVE A CONSISTENCY <br /> 2 INCH OLA 0-3/8 INCH LL) SPLIT SPO[IN WTM D-1386) <br /> PAGE OF <br />