2014-08-04_REVISION - M1981185 (3)

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SOIL CLASSIFICATION CHART MAJOR DIVISIONS SYMBOLS TYPICAL GRAPH LETTER DESCRIPTIONS CLEAN WELL-GRA�' ' GW SAND MIXTURES,DED LITTLE OR NO EL GRAVEL GRAVELS AND S •� FINES GRAVELLY POORLY-GRADED GRAVELS, SOILS (LITTLE OR NO FINES) o �Oo D GP GRAVEL-SAND MIXTURES, LITTLE 0 0 ,0 0 OR NO FINES COARSE a GRAINED GRAVELS WITH SILTY GRAVELS, GRAVEL-SAND- SOILS MORE THAN 50% FINES o D GM SILT MIXTURES OF COARSE 0 0 FRACTION RETAINED ON NO. 4 SIEVE (APPRECIABLE CLAYEY GRAVELS, GRAVEL-SAND- AMOUNT OF FINES) GC CLAY MIXTURES CLEAN SANDS SW WELL-GRADED SANDS,GRAVELLY MORE THAN 50% SAND SANDS, LITTLE OR NO FINES OF MATERIAL IS AND LARGER THAN SANDY NO.200 SIEVE SOILS POORLY-GRADED SANDS, SIZE (LITTLE OR NO FINES) Sp GRAVELLY SAND, LITTLE OR NO FINES SANDS WITH SILTY SANDS, SAND-SILT MORE THAN 50% FINES SM MIXTURES OF COARSE FRACTION PASSING ON NO. 4 SIEVE (APPRECIABLE CLAYEY SANDS, SAND-CLAY AMOUNT OF FINES) SC MIXTURES INORGANIC SILTS AND VERY FINE ML SANDS, ROCK FLOUR, SILTY OR CLAYEY FINE SANDS OR CLAYEY SILTS WITH SLIGHT PLASTICITY SILTS INORGANIC CLAYS OF LOW TO FINE AND LIQUILESS TDHANIT MEDIUM PLASTICITY,0 CL CLAYS, ANDY CLAYS,SILTY SOILS GRAVELLY GRAINED CLAYS CLAYS, LEAN CLAYS OL ORGANIC SILTS AND ORGANIC — — — SILTY CLAYS OF LOW PLASTICITY MORE THAN S OF MATERIALL I INORGANIC SILTS, MICACEOUS OR SMALLER THANN Mli DIATOMACEOUS FINE SAND OR NO. 200 SIEVE SILTY SOILS SIZE SILTS AND LIQUID LIMIT INORGANIC CLAYS OF HIGH CLAYS GREATER THAN 50 CH PLASTICITY OH ORGANIC CLAYS OF MEDIUM TO HIGH PLASTICITY, ORGANIC SILTS HIGHLY ORGANIC SOILS PT PEAT, HUMUS, SWAMP SOILS WITH HIGH ORGANIC CONTENTS NOTE: DUAL SYMBOLS ARE USED TO INDICATE BORDERLINE SOIL CLASSIFICATIONS Page 3 of 3