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' UNIFIED SOIL CLASSIFICATION - ASTM D2487-85 <br /> ' MAJOR DIVISIONS TYPICAL NAMES <br /> G WWELL GRADED GRAVELS WITH OR <br /> ' ;•;;�-� WITHOUT SAND,LITTLE OR NO FINES <br /> GRAVELS CLEAN GRAVELS WITH -:. r•.� <br /> ac LT CPLE OR NO FINES % <br /> w :cd •:: •• POORLY GRADED GRAVELS WITH OR <br /> ' M w )vMRE THAN :';• WITHOUT SAND,LIT=OR NO FINES <br /> .] at HALF COARSE <br /> •+ t FRACTION IS <br /> O o LARGERTHAN G rI SILTY GRAVELS.SILTY GRAVELS <br /> ' m v m Ila 4SIEVE WITH SAND <br /> n SIZE GRAVELS WITH OVER <br /> A w w <br /> 12%FINES <br /> w - - G C CLAYEY GRAVELS,CLAYEY <br /> Z w GRAVELS WITH SAND <br /> ' d s <br /> C4 t o S W 0•0 1• WELL GRADED SANDS WITH OR WITH- <br /> 0 z • • • OUT GRAVEL,LITTLE OR NO FINES <br /> CLEAN SANDS WITH • r <br /> w z e LITTLE OR NO FINES <br /> CA < z SANDS S P s 1+ POORLY GRADED SANDS WITH OR <br /> a r f+ f s WITHOUT GRAVEL,LITTLE OR NO FINES <br /> -e� F z <br /> O < MORE THAN • • <br /> C7 w s HALF COARSE S m + • SILTY SANDS WITH OR <br /> ad N FRACTONIS • + WITHOUT GRAVEL <br /> o SMALLER SANDS WITH OVER + + <br /> I THANNo.4 12%FINES 1 • • <br /> SIEVE SIZE S C * • CLAYEY SANDS WITH OR <br /> WITHOUT GRAVEL <br /> M L INORGANIC SILTS AND VERY FINE SANDS, <br /> ' ROCK FLOUR,SILTS WITH SANDS AND <br /> x SILTS and CLAYS <br /> a n C L INORGANIC CLAYS OF LOW TO MEDIUM <br /> w LIQUID LIMIT 50%OR LESS PLASTICITY,CLAYS WITH SANDS AND <br /> q y - <br /> GRAVELS.LFAN CLAYS <br /> ' w O L i ORGANIC SILTS OR CLAYS OF <br /> m w p LOW PLASTICITY <br /> w a o 1 1 1 1 <br /> t n <br /> •• = M H INORGANIC SILTS,MICACEOUS ORDIA- <br /> e TOMACIOUS,FINE SANDY OR SILTY SOILS, <br /> oc z z SILTS and CLAYS ELASTIC SILTS <br /> ' x z C H INORGANIC CLAYS OF HIGH PLASTICITY, <br /> LIQUID L51 T GREATER THAN 50% FAT CLAYS <br /> Z x <br /> O H 'e ORGANIC SILTS OR CLAYS OF MEDIUM <br /> o TO HIGH PLASTICITY <br /> HIGHLY ORGANIC SOILS P t PEAT AND OTHER HIGHLY ORGANIC <br /> SOILS <br /> 1 <br /> ' CA 953M6729 Aur.31.1993 <br />