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UNIFIED SOIL CLASSIFICATION - ASTM D2487-85 <br /> MAJOR DIVISIONS TYPICAL NAI'vES <br /> G W .�''•, '. WELL GRADED GR.kVELS IN=OR <br /> WITS CU-r SAND,LrM7—r.OR X10 FNE-S <br /> GRAVELS CLEAN GRAVELS WITH ;::�;:• <br /> L[7LE OR NO FlINES <br /> G P POORLY GRADED GRAVELS WITH OR <br /> n -0 MORE TILAN :•�;•� WTCHOVT SAND.LITTLE OR NO ELITES <br /> x HALF COARSE `• '�t <br /> FRACTION 13 <br /> LARGER TKkT G MSILTY GRAVELS,S11-7Y GRAVELS <br /> u w Na 3 SIEVE WITH SAND <br /> > S[�. GRAVELS%4=OVER <br /> LU <br /> 124'.FES <br /> G CA* ** <br /> CLAYEY GRAVELS,CLAYEY <br /> y GRAVELS WITH SAXD <br /> t 1 0 <br /> t S W WELL GRADED SAINDS`OJT H OR`w7-rI- <br /> r • • OUT GRAVEL.LdT'II-OR NO FLIES <br /> CLEAN SANDS WITH � � <br /> z o LITTLE.OR NO FNES <br /> < x SANDS 5 P ; ��• POORLY GRADED SANDS WFCI-IOR <br /> + WITHOUT GRAVEL.LITTLE OR NO FINES <br /> x <br /> C t MCRE THAN • • <br /> C; 9 a xAla COARSE s M . . SLLTY SANDS WITH OR <br /> F FRAC-.-:CNIS s + W[THOI,TGRAVEL <br /> SIvfAIl- SANDS W`=OVER ♦ • <br /> THAN No.s 1244 FINES I e <br /> SIEVE 3= S C CLAYEY SANDS WTI•H OR <br /> V=CL7 GRAVEL <br /> M L INORGANIC SILTS AND VERY PIIVE SANDS, <br /> ROCK FLOUR SILTS WITH SANDS A.ND <br /> z SILTS and CLAYS G 4VE <br /> > C L INORGANIC CLAYS OF TAW TO MEDIUM <br /> w LIQU'RD L. Irr 50%OR LESS PLASTICITY.CLAYS WITH SANDS AND <br /> GR,-kVEU, CLAYS <br /> O LI L I I ORGANIC SILTS OR CLAYS OF <br /> 1 I I 1 LOW PLASTICITY <br /> a 1 1 1 1 <br /> w � e <br /> < ry yi H INORGANIC SILTS,%CCACEOUS OR DIA- <br /> TOMACIOUS,FINE SANDY OR SILTY SOILS, <br /> c z z SILTS and CLAYS ELAMC s TS <br /> c < <br /> a z C H INORGANIC CLAYS OF HIGH PLASTICCi f, <br /> < LIQ(,•[D LLti, 7 GREATER THAN 50% FAT CLAYS <br /> W O $ �� � � ORGANIC SILTS OR CLAYS OF ti.[EDIUm <br /> a / TO EUGH PL.AS-ITCCCY <br /> HIGHLY ORGANIC SOILS P r PEAT OTHER HIGHLY ORGANIC <br /> 'UHF Enc <br />