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ao <br />0 <br />(0 <br />z <br />0 <br />w <br />Z <br />w <br />F <br />X <br />w <br />Z <br />Q <br />2 <br />H <br />O <br />K <br />tY <br />C7 <br />tY <br />oo <br />oo <br />UNIFIED SOIL CLASSIFICATION (ASTM D-2487/2488) <br />MATERIAL <br />TYPES <br />CRITERIA FOR ASSIGNING SOIL GROUP NAMES <br />GROUP <br />SYMBOL <br />SOIL GROUP NAMES & LEGEND <br />COARSE -GRAINED SOILS <br />>50% RETAINED ON <br />NO. 200 SIEVE <br />GRAVELS <br />° <br />>50 /o OF COARSE <br />FRACTION RETAINED <br />ON NO 4. SIEVE <br />CLEAN GRAVELS <br /><5% FINES <br />Cu>4 AND 1<Cc<3 <br />GW <br />WELL -GRADED GRAVEL <br />1 <br />•'1oe -�, <br />GU _ <br />o 30 o <br />Cu>4 AND 1>Cc>3 <br />GP <br />POORLY -GRADED GRAVEL <br />GRAVELS WITH FINES <br />>12% FINES <br />FINES CLASSIFYASMLORCL <br />GM <br />SILTY GRAVEL <br />o,..1 <br />o 3°q0 <br />U 0` <br />FINES CLASSIFYASCLORCH <br />GC <br />CLAYEY GRAVEL <br />"`ii������" <br />'iiiiiiiiiiii <br />SANDS <br />>50% OF COARSE <br />FRACTION PASSES <br />ON NO 4. SIEVE <br />CLEAN SANDS <br /><5% FINES <br />Cu>6 AND 1<Cc<3 <br />SW <br />WELL -GRADED SAND <br />Cu>6 AND 1>Cc>3 <br />SP <br />POORLY -GRADED SAND <br />SANDS AND FINES <br />>12% FINES <br />FINES CLASSIFY AS ML OR CL <br />SM <br />SILTY SAND <br />FINES CLASSIFY AS CL OR CH <br />SC <br />CLAYEY SAND <br />FINE-GRAINED SOILS <br />>50% PASSES <br />NO. 200 SIEVE <br />SILTS AND CLAYS <br />LIQUID LIMIT<50 <br />INORGANIC <br />PI>7 AND PLOTS>"A" LINE <br />CL <br />LEAN CLAY <br />PI>4AND PLOTS<"A"LINE <br />ML <br />SILT <br />r <br />ORGANIC <br />LL (oven dried)/LL (not dried)<0.75 <br />OL <br />ORGANIC CLAY OR SILT <br />� — _ <br />SILTS AND CLAYS <br />LIQUID LIMIT>50 <br />INORGANIC <br />PI PLOTS>"A" LINE <br />CH <br />FAT CLAY <br />ll,d <br />PI PLOTS <"A" LINE <br />MH <br />ELASTIC SILT/J <br />ORGANIC <br />LL(ovendried)/LL(notdried)<0.75 <br />OH <br />ORGANIC CLAY OR SILT <br />HIGHLY ORGANIC SOILS <br />PRIMARILY ORGANIC MATTER, DARK IN COLOR, AND ORGANIC ODOR <br />PT <br />PEAT <br />SAMPLE TYPES <br />Relative Proportions of Sand and Gravel <br />TERM PERCENT <br />Trace 5 5 <br />With 15 - 1 29 <br />Modifier > 30 <br />! i <br />Hollow Stem <br />Standard Penetration Test <br />Relative Proportions of Fines <br />TERM PERCENT <br />Trace <5 <br />With 5-12 <br />Modifier > 12 <br />TEST SYMBOLS <br />MC - MOISTURE CONTENT LL - LIQUID LIMIT <br />OC - ORGANIC CONTENT PI - PLASTISITY INDEX <br />Grain Size Terminology <br />CN - CONSOLIDATION SW - SWELL TEST <br />TERM SIZE <br />Boulder < 12 in. <br />Cobble 3 in. - 12 in. <br />Gravel #4 sieve to 3 in. <br />Sand #200 sieve to #4 sieve <br />Silt or Clay Passing #200 sieve <br />DD - DRY DENSITY UU Unconsolidated Undrained trio al <br />PP - POCKET PENETROMETER <br />RV - R-VALUE <br />SA - SIEVE ANALYSIS <br />P200 - % PASSING #200 SIEVE <br />(WITH TIME OF) <br />PLASTICITY CHART WATER MEASUREMENLEVELT <br />80 <br />PLASTICITY INDEX (%) <br />0 0 0 0 0 0 0 <br />PENETRATION RESISTANCE <br />(RECORDED AS BLOWS / 0.5 FT) <br />SAND & GRAVEL <br />SILT & CLAY <br />CH <br />COMPRESSIVE <br />RELATIVE DENSITY BLOWS/FOOT" <br />CONSISTENCY BLOWS/FOOT" STRENGTH (TSF) <br />VERY LOOSE 0-4 <br />LOOSE 4-10 <br />VERY SOFT 0-1 0-0.25 <br />SOFT 2-3 0.25-0.50 <br />RATHER SOFT 4 - 5 <br />CL <br />�� <br />MH <br />MEDIUM DENSE 10 - 30 <br />VERYE 30-50 <br />0.50 - 1.0 <br />MEDIUM 6 - 8 <br />RATHVEIFFER STIFF 3_10 1.0-4.0 <br />* <br />NUMBER OF BLOWS OF 140 LB HAMMER FALLING 30 INCHES TO DRIVE A 2 INCH O.D. <br />0 10 20 30 40 50 60 70 80 90 100 110 120 (1-3/8 INCH I.D.) SPLIT -BARREL SAMPLER THE LAST 12 INCHES OF AN 18-INCH DRIVE <br />LIQUID LIMIT (%) (ASTM-1586 STANDARD PENETRATION TEST). <br />Chosen Valley Testing <br />LEGEND TO SOIL <br />DESCRIPTIONS <br />n <br />T <br />Job No. 16987.20.MNR <br />Ha nok a„n,Iru. <br />