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Mw <br /> MAJOR DIVISIONS USCS TYPICAL NAME <br /> SYMBOL <br /> :.:.: <br /> WELL-GRADED GRAVELS,GRAVEL-SAND <br /> GRAVELS GW GRAVELS GW MIXTURES, LITTLE OR NO FINES <br /> WITH LITTLE OR <br /> NO FINES • • POORLY-GRADED GRAVELS,GRAVEL-SAND <br /> MORE THAN HALF CP MIXTURES,LITTLE OR NO FINES <br /> COARSE FRACTION <br /> IS LARGER THAN • • SILTY GRAVELS,GRAVELSAND SILT <br /> THE No.200 SIEVE GRAVELS . . MIXTURES <br /> WITH OVER • <br /> 12% FINES CLAYEY GRAVELS,GRAVEL-SAND-CLAY <br /> MIXTURES <br /> .:s;:s.•: WELL-GRADED SANDS,SAND-GRAVEL <br /> CLEAN SANDS <br /> SANDS ;:isi=:i W MIXTURES WITH LITTLE OR NO FINES <br /> WITH LITTLE OR <br /> NO FINES POORLY GRADED SANDS,SAND-GRAVEL <br /> MORE THAN HALF MIXTURES WITH LITTLE OR NO FINES <br /> COARSE FRACTION <br /> IS SMALLER THAN SILTY SANDS, SAND-GRAVEL-SILT <br /> THE No.200 SIEVE SANDS SM MIXTURES <br /> WITH OVER <br /> 12% FINES CLAYEY SANDS,SAND-GRAVEL-CLAY <br /> MIXTURES <br /> INORGANIC SILTS&VERY FINE SANDS, <br /> SILTY OR CLAYEY FINE SILTS AND CLAYS ML SILTS WITH SLIGHT PLASTICITY ICITY LAYEY <br /> INORGANIC CLAYS OF LOW TO MEDIUM <br /> CL PLASTICITY, GRAVELLY CLAYS, SANDY <br /> LIQUID LIMIT LESS THAN 50 CLAYS SILTY CLAYS LEAN CLAYS <br /> III <br /> OL ORGANIC SILTS&ORGANIC SILTY CLAYS <br /> I I I <br /> III OF LOW PLASTICITY <br /> I I I <br /> MH ORGANIC SILTS,MICACEOUS OR <br /> SILTS AND CLAYS DIATOMACEOUS FINE SAND OR SILT <br /> CH INORGANIC CLAYS OF HIGH <br /> LIQUID LIMIT GREATER THAN 50 PLASTICITY, FAT CLAYS <br /> OH ORGANIC CLAYS&ORGANIC SILTS <br /> OF MEDIUM TO HIGH PLASTICITY <br /> HIGHLY ORGANIC SOILS PT PEAT, HUMUS, SWAMP SOILS <br /> WITH HIGH ORGANIC CONTENTS <br /> &M CRC Environmental Rist:Management.Inc. <br /> 17875 Von Karman Avenue, Site zoo UNIFIED SOIL CLASSIFICATION SYSTEM <br /> Irvine,California 92713 <br /> Relerenoe The UndW Sal Cl"It On System Corns of Enginsem U S Army Town"MemonrWum No 3357 Vol I,Much 1953 Irevueo Ap11,191 0) <br />