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SOIL IDENTIFICATION TERMINOLOGY <br />5 <br />X <br />UJ <br />Z <br />0 <br />1 <br />UJcn ^ <br />500 gc/i a <br />ocn <br />o <br />UJz <br /><cro <br />uz <br />Cu <br />Ui <br />•C X <br />O UJ <br />tn 5 <br />O f/i <br />S8 <br />u 6 <br />K Z <br />CO <br />UJ <br />CO <br />UJ <br />(T <br />2 <N <br />Si <br />K uJ <br />9 ^irt ►- <br />more than 50X LESS than 5% FINES GP POORLY GRADED GRAVEL <br />CF COARSE fraction <br />RETAINCO ON <br />NO. * SIEVE <br />GRAVELS WITH FINES <br />more than 12 % FINES <br />GMI SILTY Gf^VEL <br />GC|CLAYEY GRAVEL <br />SANDS CLEAN SANDS <br />LESS than 5X fines 1 <br />sw WELL-GftAOED SAND ! <br />MORE THAN SOX SP “PDDRlY GRADED SANO <br />OF COARSE FRACTION <br />PASSES NO. 4 <br />SIEVE <br />SANDS WITH FINES <br />more than 12% fines ! <br />SMI SILTY SAND <br />SC!CLAYEY Sand <br />SILTS AND CLAYS <br />INORGANIC,PI > 7 j <br />CL lean CLAY <br />PI < 4 ML SILT <br />LIQUID LIMIT <br />less than sox <br />ORGANIC OL ORGANIC CLAY <br />C GANIC SILT <br />SILTS AND CLAYS <br />INORGANIC <br />PI PLOTS ON OR ABOVE *A" LINE <br />CH FAT CLAY <br />liquid UMlT <br />SOX OR MORE <br />PI PLOTS BELOW *A* UNE <br />MH ELASTIC SILT <br />ORGANIC OH ORGANIC CLAY <br />ORGANIC SILT <br />HIGHLY ORGANIC SOILS PT PEAT <br />PARTICLE SIZE IDENTIFICATION <br />X <br />UJo <br />o <br />30 <br />20 <br />10 <br />0 <br />[rOH CLASSlFJCAnON OF HN£- <br />ICRMHtO SOILS ANO FfWC- <br />VoAiiMrn roATTinM Of /i .?. A <br />^-------- <br />CRAINCO SOILS <br />EQUATION OF ’A* L <br />HORl20NTAi. AT <br />'pi • 4 TO a - 2S.I <br />jR • .73(U-20) <br />INC <br />/ <br />0'^w <br />MH 1 OR G 'H <br />y <br />-jY^\ <br />L OR1 OL <br />BOULDERS <br />COBBLES <br />GRAVEL <br />COARSE <br />FINE <br />SAND <br />COARSE <br />MEDIUM <br />FINE <br />SILT <br />CLAY <br />OVER 12" <br />3" - 12" <br />3/4" - 3 “ <br />NO. 4 - 3/4 “ <br />NO. 4 - NO. 10 <br />NO. 10 - NO. 40 <br />NO. 40 - NO. 200 <br />NO. 200 - .005 MM <br />less than .005 MM <br />UQUID UMIT (LL) <br />RELATIVE DENSITY OF <br />COHESIONLESS SOILS <br />VERY LOOSE <br />LOOSE <br />MEDIUM DENSE <br />DENSE <br />VERY DENSE <br />0-4 BPF <br />5-10 BPF <br />11-30 BPF <br />31 - 50 BPF <br />50+ BPF <br />REU\TIVE DENSITY OF COHESIVE SOILS <br />VERY SOFT <br />SOFT <br />FIRM <br />HARD <br />VERY HARD <br />0-4 BPF <br />5 - 8 BPF <br />9 - 15 BPF <br />16-30 BPF <br />30+ BPF <br />BPF - BLOWS PER FOOT <br />SCHOELL & MADSON, INC.