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WATERWORK <br /> rf�•ra <br /> METHOD OF SOIL CLASSIFICATION <br /> PlAJGR IBIVISICNS SYMBOLS TYPICAL NAMES 1 <br /> e�A GW WELL GRADED GRAVELS OR GRAVEL-SAND MIXTURES, LITTLE OR NO F[NES <br /> GRAVELS Qa <br /> J u CSP as POORLY GRADED GRAVELS OR (RAVC:,-SAND MIXTURES, I.ITTLE OR NO FINES <br /> ucn. cMDAE r4AN lit CF Gm SILTY GRAVELS, GRAVEL-SAND-SILT MIXTURES <br /> [�N COARSE FRACTION <br /> c-,.: Z 9 NO. 4 SIEVE Sr.:) rr o <br /> GC o CLAYEY GRAVELS, GRAVEL-SAND-CLAY MIXTURES <br /> Q <br /> a WELL GRADED SANDS OR GRAVELY SANDS, L1TrLE OR NO FINES <br /> SANDS <br /> w <br /> Xi7 SP ��Si POORLY GRADED SANDS OR GRAVELY SANDS, L.ITrLE OR NO FINES a. <br /> �r x <br /> Q <br /> ❑ INGIRE TMN4 I -13FSM SILTY SANDS. SAND-SILr MIXTURES <br /> U CAARsE rUt"om r <br /> .h <br /> NO. 4 SIEVE :SZEJ <br /> Sc CLAYEY SANDS. SAND-CLAY )OXrURES <br /> ,a S <br /> INORGANIC SILTS AND VERY FIVE SAND$ ROCK F,JVER, SILTY OR CLAYEY <br /> - �bnr ML I��� FINE SANDS OR CLAYEY SILTS WITM SLIGHT PLASTICITY <br /> J SILTS CLAYS <br /> INORGANIC CLAYS OF LOw TO MEDIUM PLASTICITY, GRAVELY CLAYS, <br /> CL <br /> LLC50 SANDY CLAYS, SILTY CLAYS, LEAN CLAYS <br /> d <br /> OL i,, ORGANIC SILTS AND ORGANIC SILTY CLAYS OF LOW PLASTICITY <br /> Lu <br /> �,c <br /> Z <br /> Q INORGANIC SILTS, MICACEOUS OR DIAT13MACECOUS FIAII: SANDY OR SILTY <br /> MH SOILS, ELASTIC SILTS <br /> CLAYS <br /> IN <br /> L[.1 GH INORGANIC CLAYS OF HIGH PLASTICITY, FAT CLAYS <br /> z LL)50 <br /> LiF <br /> ORGANIC CLAYS OF MEDIUM TO HIGH PLAST[C[rY. ORGANIC SILTY CLAYS, <br /> _5 QFC �fj ORGANIC SILTS <br /> G <br /> HIGHLY CRGAN[C SLOILS I Pt PEAT AND OTHER HIGHLY ORGANIC SOILS <br /> CLASSIFICATION CHART <br /> i <br /> UNIFIED SOIL CLASSIFICATION SYSTEM ) <br /> RANGE LIF GRAIN SIZES <br /> CLASSIFICATICM U.S. STANDARD GRAIN SIZE SANDS AND GRAVELS 3L13WS/FOg7 <br /> SIEVE SIZE IN MILU ETERS <br /> 0 - . <br /> ABOVE L2' ABOVE 1�• VERYLOOSE <br /> BOULDER, LUIS[ Y - LO <br /> MEDIUM DENSE 10 - 30 <br /> COBBLES 12' TO 31 305 TO 76.2 <br /> DENSE 30 - 50 <br /> GRAVEL 3' TO NO. 4 76.2 TO 4.76 VERY DENSE CIVER 50 <br /> COARSC 3' TO 1/4' 762 TO LIJ <br /> FI}rE 314Io NO. 4 I91 TO 4.76 RELATIVE DENSITY <br /> SAP!UL NO. 4 TO NO. 200 4.760 rO o.D74 SILTS AND CLAYS 3LpuS/FOGY <br /> CCAa�E NO. 4 rO NO, ID 4,760 TO 2.000 <br /> ' MEDIUM hU• 10 TO Na. 40 2400 r(3 0.420 <br /> FINE IQ, 40 TO "Ch 200 0.420 TO 0.074 VERY SOFT 0 - Z <br /> SOFT z - 4 <br /> MEDIUM STIFF 4 - 0 <br /> SILT : --LAY I BELOW NO. 200 BELOW 0074 <br /> l STIFF 9 - lfi <br /> M �^ GRAIN SIZE CHART VERY STIFF t6 - 32 <br /> HARD OVER 32 <br /> a <br /> NUHBER OF 3LOWS OF !40 POUND HAMMER FALLING .',0 INCHES TO DRIVE A CONSISTENCY <br /> !riCH O.D. 'I-2t9 INCH I.D.) =FLIT SPOON <ASTH D-L506), <br /> I <br /> I <br />