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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISION CLASSIRCATIO14 TYPICAL NAMES <br /> SYMBOL <br /> CLEAN GRAVELS GW WELL GR HOED GRAVELS.GRAVEUSANO MIXTURES <br /> GRAVELS WITH UTrLETO <br /> MORE THAN NO FINES GP POORLY GRADED GRAVELS.GRAVELISAND MIXTURES <br /> COARSE HALF COARSE <br /> GRAINED FRACTION IS GM SILTY GRAVELS.POORLY GRADED GRAVEUSANMILT MWXTURE' <br /> LARGER THAN GRAVEL WITH <br /> SOILS NO.4 SIEVE OVER 12%FINES GC CLAYEY GRAVELS.POORLY GRADED GRAVEUSANOJCLAY MIX 1-UR1 <br /> MQRE.TNANW_ ` SLI.GRADED SANDS.GRAVELLY SANDS <br /> HALF OF THE SANDS -CLEAN SANDS SW t <br /> MATEIiW+L IS mTH LIl-nI F To <br /> LARGER THAN MORE THAN NO FINES SP POORLY GRADED SANDS.GRAVELLY SANDS <br /> HALF-COARSE <br /> NO.200 SIEVE FRACTION IS SM gLrY SANDS.POORLY GRADED SANO/SILT MIXTURES <br /> SMALLER TFG►N SANDS WITH - <br /> NWAI SIEVE OVER 1294 FINES <br /> sC CLAYEY SANDS.-pOORLY GRADED SMAX[:LAY MIXTURES <br /> INORGAW SILTSMID•VERY FINE SANDS,ROCK FLOUR.SM.TY OF <br /> FIN CLAY"FINE SANDS.OR CLAYEY SILTS VM SUGHT PLASTICITY <br /> GRAINED SILTS AND CLAYS INORGANIC 9 AYS OF LAW TO MEDIUM PLASTICITY. <br /> CL GRAVELLY CLAYS.SANDY CLAYS,SILTY CLAYS.LEAN CLAYS <br /> SOILS LIQUID LIMIT LESS THAN 50 <br /> 0( ORGANIC CLAYS MID OLiOAhNC SILTY CLAYS OF LOW PLASTICITY <br /> MORE THANINORGAW Scrs.MICACEOUS Oft DWTO"ACEOW <br /> HPLF OF THE NCH �FIHE SANDY OR SILTY SOILS.ELASTIC SILTS <br /> Mok1gR4LIS SILTS AND CLAYS CLAYS �� � ,FAT CLAYS J <br /> L.�T CH <br /> OO SIEVE LIQUID LNY41T GREATER THAN 59 <br /> Off{ OROMIC CLAYS OF MEDIUM TO HIGH P!ASTICI7Y ORL�AIWC SILTS <br /> HIGHLY ORGANIC SOILS Pt PFATANDOTHER HIGHLY ORCiANICSWTS <br /> i <br /> Plate 1 <br />