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UNIFIED SOIL CLASSIFICATION SYSTEM <br /> MAJOR DIVISIONS USCS TYPICAL <br /> SYMBOL DESCRIPTIONS <br /> +� GW WELL-GRADED GRAVELS, GRAVEL-SAND <br /> CLEAN GRAVELS $ MIXTURES WITH LITTLE OR NO FINES <br /> WITH LITTLE OR <br /> GRAVELS NO FINES 4W <br /> POORLY-GRADED GRAVELS, GRAVEL-SAND <br /> GP <br /> # MIXTURES WITH LITTLE OR NO FINES <br /> MORE THAN HALF <br /> COARSE FRACTION M G p SILTY GRAVELS, GRAVEL-SILT-SAND <br /> IS LARGER THAN GRAVELS G MIXTURES <br /> COARSE THE #4 SIEVE WITH OVER <br /> GRAINED 12% FINES G C CLAYEY GRAVELS, GRAVEL-SAND-CLAY <br /> SOILS L7 MIXTURES <br /> (MORE THAN HALF <br /> OF MATERIAL IS SW WELL-GRADED SANDS, SAND-GRAVEL <br /> LARGER THAN CLEAN SANDS J YY MIXTURES WITH LITTLE OR NO FINES <br /> THE #200 SIEVE) WITH LITTLE OR <br /> SANDS NO FINES <br /> S r p POORLY-GRADED SANDS, SAND-GRAVEL <br /> MIXTURES WITH LITTLE OR NO FINES <br /> MORE THAN HALF <br /> COARSE FRACTION S M SILTY SANDS, SAND-GRAVEL-SILT MIXTURES <br /> IS SMALLER THAN SANDS WITH <br /> THE #4 SIEVE OVER 12% FINES <br /> SC CLAYEY SANDS, SAND-GRAVEL-SILT MIXTURES <br /> INORGANIC SILTS & VERY FINE SANDS, <br /> M L SILTY OR CLAYEY FINE SANDS, <br /> SILTS AND CLAYS CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> INORGANIC CLAYS OF LOW TO MEDIUM <br /> CL PLASTICITY, GRAVELLY CLAYS, SANDY CLAYS, <br /> SILTY CLAYS, LEAN CLAYS <br /> FINE LIQUID LIMIT LESS THAN 50 <br /> GRAINEDOL ORGANIC SILTS & ORGANIC SILTY CLAYS <br /> SOILS OF LOW PLASTICITY <br /> (MORE THAN HALF <br /> OF MATERIAL IS M H INORGANIC SILTS, MICACEOUS OR <br /> SMALLER THAN DIATOMACEOUS FINE SAND OR SILT <br /> THE #200 SIEVE) SILTS AND CLAYS <br /> Cu INORGANIC CLAYS OF HIGH PLASTICITY, <br /> �l FAT CLAYS <br /> LIQUID LIMIT GREATER THAN 50 <br /> OH <br /> ORGANIC CLAYS & ORGANIC SILTS <br /> �! OF MEDIUM-TO-HIGH PLASTICITY <br /> HIGHLY ORGANIC SOILS 5 PT PEAT, HUMUS, SWAMP SOILS <br /> WITH HIGH ORGANIC CONTENTS <br /> SOIL CLASSIFICATION SYSTEM PLATE <br /> K L E 1 N F E L D E R CAL WEST CONCRETE CUTTING INC. <br /> MANTECA, CALIFORNIA 2 <br /> PROJECT NO 24-220172-AOO <br /> Copyright Kleinfelder, Inc 1993 <br />