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UNIFIED SOIL CLASSIFICATION - ASTM D2487-85 <br /> MAJOR DIVISIONS TYPICAL NAMES <br /> G W '.'� : WELL GRADED GRAVELS WITH OR <br /> WITHOUT SAND,LITTLE OR NO FINES <br /> GRAVIELS CLEAN GRAVELS WITH <br /> m LITTLE OR NO FINESt. <br /> w G P ::I,'••• POORLY GRADED GRAVELS WITH OR - <br /> y w MORE THAN •' ' '•� WITHOUT SAND,LITTLE OR NO FINES <br /> .a a HALF COARSE <br /> .. < FRACTIONIS <br /> O o LARGER THAN G M SILTY GRAVELS,SILTY GRAVELS <br /> w u w No.4 SIEVE • WITH SAND <br /> > SIZE GRAVELS WITH OVER <br /> q w w 12%FINES <br /> W — — G C CLAYEY GRAVELS,CLAYEY <br /> Z y GRAVELS WITH SAND <br /> ate = <br /> C < _ S W •0 0 WELL GRADED SANDS WITH OR WITH- <br /> C! x r •��•• OUT GRAVEL,LITTLE OR NO FINES <br /> CLEAN SANDS WITH <br /> W z o LITTLE OR NO FINES <br /> y < z SANDS S P • ••• POORLY GRADED SANDS WITH OR <br /> p; x • • WITHOUT GRAVEL,LITTLE OR NO FINES ` <br /> af = • � • f <br /> O < MORETHAN <br /> U w x HALF COARSE S M • • • • SILTY SANDS WITH OR <br /> m f FRACTIONIS • • WITHOUT GRAVEL . <br /> o SMALLER SANDS WITH OVER • <br /> 3 THAN No.4 12%FINES • <br /> SMVESUE S C • • • CLAYEY SANDS WITH OR <br /> WITHOUT GRAVEL <br /> p <br /> a M L INORGANIC SILTS AND VERY FINE SANDS, <br /> w ROCK FLOUR,SILTS WITH SANDS AND <br /> _ SILTS and CLAYS GR <br /> y - w <br /> ,a w > C L INORGANIC CLAYS OF LOW TO MEDIUM <br /> w LIQUID LIMIT 50%OR LESS PLASTICITY,CLAYS WITH SANDS AND <br /> O w _ GRAVETA LFAM CLAYS i <br /> y O L ` ORGANIC SILTS OR CLAYS OF r <br /> q w e 1 1 1 ( LAW PLASTICITY <br /> W � e <br /> Z 6 <br /> x M H INORGANIC SILTS•MICACEOUS OR DIA- <br /> a TOMACIOUS,FINE SANDY OR SILTY SOILS• <br /> a z zSILTS and CLAYS a c s Ts <br /> x z C H INORGANIC CLAYS OF HIGH PLASTICITY. <br /> LIQUID LIMIT GREATER THAN 50% FAT CLAYS <br /> z = <br /> k, z 0 H / ORGANIC SILTS OR CLAYS OF MEDIUM <br /> TO HIGH PLASTICITY <br /> HIGHLY ORGANIC SOILS P t PEAT AND OTHER HIGHLY ORGANIC <br /> SOILS <br /> f <br /> I <br /> i <br /> f <br /> v �! <br /> } <br />