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� �� t <br /> SOIL CLASSIFICATION SYSTEM <br /> GROUP <br /> MAJOR DIVISIONS SYMBOL GROUP NAME <br /> GRAVEL CIEANGRAVEL GW WELL-GBADEDGFAVEI.FINET000AR5EGRAVEL <br /> COARSE <br /> GRAINED GP POORLY�GFADEDGfiAVEL <br /> SOILS More Than 509e <br /> ol Coarse Fraclion GRAVEL GM SaTY GRnVEL <br /> Relained WITHFINES <br /> on No.4 Sieve GC CLAYEY GRAVEL <br /> Mofe Than SOYe SANO CLEAN SAN� SW WELL�GRADED SAND,FINE TO COARSE SAND <br /> Rolainad on <br /> No.200Sieve gp POOflLY�GflADEDSRNU <br /> More Than 50 e <br /> ol COarse Frat�ion SAND SM SILTY SAND <br /> Passes W ITH FINES <br /> N0.4 SieVe SC CLAYEY$AND <br /> FINE SILT AND CLAY ML SI�7 <br /> GRAINED INORGANIC <br /> SOILS CL CLAY <br /> Liquid limit <br /> Le55 Than 50 ORGANIC OL ORGANIC SILT,ORGANIC CIAY <br /> $ILT AND CLAY MH SILT OF HIGH PLASTICITY,E�ASTIC SILT <br /> More Than 50% INORGANIC <br /> Pa5585 �H CLAY OF HIGH PlASTICITY,FAT CLAY <br /> No.200 Siave Liquid Limit <br /> SOatMom OR3ANIC OH OBGANICCLAY,ORGANICSILT <br /> HI�HLY PRGANIC SOILS pT PEAi <br /> NOTES: SOIL MOISTURE MODIFIERS: <br /> 1. Field classilication is basod on visual e:amination of soil in Dry•Abser.ca of moisture,dusty,dry to Ihe touch <br /> genaral acrordance wilh ASThI D2488�90. <br /> Maisl- Damp,hu�no visible water <br /> 2. Soil classil�cation using laboralory lests is hased on ASTM <br /> D2487•90. W el- Visi6le iree water or seturated,usually soil is oblained <br /> Irom below water table <br /> 3. �escriptiona ol soil density or consistency are besud on <br /> interpretatien of blow count dala,visual appearance ol sails, <br /> andlor test dala. <br /> SOIL CLASSIFI�ATION SYSTEM <br /> TUBBSL�C�a0;�;��lc��fi11��,c��� <br /> FIGURE A-1 <br /> �� �� <br />