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SOIL CLASSIFICATION CHART <br /> ' MAJOR DIVISIONS SYMBOL TYPICAL DESCRIPTIONS <br /> LETTER <br /> M GRAVEL CLEANG W WELL-GRADED GRAVELS GRAVEL SAND MIXTURES <br /> AND GRAVELS LITTLE OR NO FINES <br /> GRAVELLY <br /> ' SOILS (LITTLE OR NO FINES) G POORLY-GRADED GRAVELS'GRAVEL SAND MIXTURES <br /> LITTLE OR NO FINES <br /> COARSE <br /> ' GRAINED MORE THAN 50'/0 <br /> OF COARSE G RAVELSG R A <br /> SOILS FRACTION IY� SILTY GRAVELS GRAVEL SAND SILT MIXTURES <br /> RETAINED ON WITH FINES <br /> #4 SIEVE <br /> (APPRECIABLE CLAYEY GRAVELS GRAVEL-SAND CLAY MIXTURES <br /> GC <br /> MORE THAN 50% AMOUNT OF FINES) C <br /> OF MATERIAL IS <br /> LARGER THAN <br /> #240 SIEVE SIZE SAND CLEAN SW WELL-GRADED SANDS GRAVELLY SANDS LITTLE <br /> SAND V OR NO FINES <br /> AND SANDY <br /> SOILS SP <br /> (LITTLE OR NO FINES) POORLY-GRADED SANDS GRAVELLY SANDS LITTLE <br /> OR NO FINES <br /> 1 MORE THAN 50% �� <br /> OF COARSE SANDS SILTY SANDS SAND-SILT MIXTURES <br /> FRACTION WITH FINES <br /> RETAINED ON <br /> #4 SIEVE <br /> (APPRECIABLE SC CLAYEY AND SAND CLAY MIXTURES <br /> AMOUNT OF FINES) <br /> ' INORGANIC SILTS AND VERYiFINE SANDS ROCK <br /> M L FLOUR SILTY OR CLAYEY FINE SANDS <br /> OR CLAYEY SILTS WITH SLIGHT PLASTICITY <br /> FINE SILTS LIQUID LIMIT <br /> AND LESS THAN 50INORGANIC CLAYS OF LOW TO MEDIUM <br /> GRAINED CLAYS C L PLASTICITY GRAVELLY CLAYS SANDY CLAYS <br /> SOILS SILTY CLAYS LEAN CLAYS; <br /> ' ORGANIC SILTS AND ORGANIC SILTY CLAYS <br /> O L OR LOW PLASTICITY <br /> MORE THAN 500% <br /> OF MATERIAL IS <br /> SMALLER THAN n�u INORGANIC SILTS MICACEOUS OR DIATOMACEOUS <br /> ,Yi f � FINE SAND OR SILTY SOILS <br /> #200 SIEVE SIZE SILTS <br /> ' LIQUID LIMIT <br /> AND GREATER THAN 50 INORGANIC CLAYS OF HIGH PLASTICITY <br /> CLAYS CH FAT CLAYS <br /> ' ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY <br /> OH ORGANIC SILTS <br /> L: PEAT HUMUS SWAMP SOILS WITH <br /> HIGHLY ORGANIC SOILS PT HIGH ORGANIC CONTENTS <br /> /A <br /> /Park <br /> ' En.lt.n,..nt.l <br /> Leawng AClean Envronment <br />