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MAJOR DIVISIONS <br />SYMBOLS <br />TYPICAL <br />GRAPH <br />LETTER <br />DESCRIPTIONS <br />COARSE <br />GRAINED <br />SOILS <br />° <br />MORE THAN 50% <br />OF MATERIAL IS <br />LARGER THAN <br />NO. 200 SIEVE <br />SIZE <br />GRAVEL <br />AND <br />GRAVELLY <br />SOILS <br />MORE THAN 50% <br />OF COARSE <br />FRACTION <br />RETAINED ON NO. <br />4 SIEVE <br />CLEAN <br />GRAVELS <br />(LITTLE OR NO FINES) <br />O. 6 b / <br />se 1111 .0 ttS'� <br />GW <br />WELL- GRADED GRAVELS, GRAVEL - <br />SAND MIXTURES, LITTLE OR NO <br />FINES <br />• <br />o QL o <br />) pO <br />o c0 0 OQ <br />Qo <br />DC <br />! <br />GP <br />POORLY- GRADED GRAVELS, <br />GRAVEL - SAND MIXTURES, LITTLE <br />OR NO FINES <br />GRAVELS WITH <br />FINES <br />(APPRECIABLE <br />AMOUNT OF FINES ) <br />F. 00 <br />o <br />° <br />S o <br />�s <br />C <br />q Q <br />GM <br />SILTY GRAVELS, GRAVEL SAND <br />SILT MIXTURES <br />jl <br />, i <br />'j % e • <br />f f! I # 0Q, <br />G C <br />CLAYEY GRAVELS, GRAVEL - SAND - <br />CLAY MIXTURES <br />SAND <br />AND <br />SANDY <br />SOILS <br />MORE THAN 50% <br />OF COARSE <br />FRACTION <br />PASSING ON NO. <br />4 SIEVE <br />CLEAN SANDS <br />(LITTLE OR NO FINES) <br />SW <br />VELLY <br />SANDS, WELL-GRADED OR N FINES <br />.. : <br />SP <br />POORLY- GRADED SANDS, <br />GRAVELLY SAND, LITTLE OR NO <br />FINES <br />SANDS WITH <br />FINES <br />(APPRECIABLE <br />AMOUNT OF FINES) <br />SM <br />SILTY SANDS, SAND - SILT <br />MIXTURES <br />/ <br />S . `+ <br />CLAYEY SANDS, SAND - CLAY <br />MIXTURES <br />FINE <br />GRAINED <br />SOILS <br />MORE THAN 50% <br />OF MATERIAL IS <br />SMALLER THAN <br />NO. 200 SIEVE <br />SIZE <br />SILTS <br />AND LIQUID LIMIT <br />CLAYS LESS THAN 50 <br />ML <br />INORGANIC SILTS AND VERY FINE <br />SANDS, ROCK FLOUR, SILTY OR <br />CLAYEY FINE SANDS OR CLAYEY <br />SILTS WITH SLIGHT PLASTICITY <br />/ <br />CL <br />INORGANIC CLAYS OF LOW TO <br />MEDIUM PLASTICITY, GRAVELLY <br />CLAYS, SANDY CLAYS, SILTY <br />CLAYS, LEAN CLAYS <br />_ _ _ <br />— — _ _ <br />OL <br />ORGANIC SILTS AND ORGANIC <br />SILTY CLAYS OF LOW PLASTICITY <br />SILTS LIQUID LIMIT <br />AND GREATER THAN 50 <br />CLAYS <br />MH <br />INORGANIC SILTS, MICACEOUS OR <br />DIATOMACEOUS FINE SAND OR <br />SILTY SOILS <br />/ <br />CH <br />C <br />INORGANIC CLAYS OF HIGH <br />PLASTICITY <br />O H <br />ORGANIC CLAYS OF MEDIUM TO <br />HIGH PLASTICITY, ORGANIC SILTS <br />HIGHLY ORGANIC SOILS <br />" .. ,, 0" „ _ <br />, � , /, , /, 0 /, <br />PT <br />PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS <br />SOIL CLASSIFICATION CHART <br />NOTE: DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE SOIL CLASSIFICATIONS <br />Page 3 of 3 <br />