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Drafted: Date: ChOC40d: Dela: Approved: Dale: Form DFT-1.08 (7/83) Job 140. <br /> 3 <br /> GRAIN SIZE CURVES <br /> T U.S.STANDARD SIEVE NUMBERS U.S.STANDARD SIEVE OPENINGS IN INCHES HYDROMETER <br /> 100 3 2 11/2 1 3S 'k e 14 20 30 40 w 70 100 1b 200 <br /> 0 <br /> a <br /> z <br /> ° 90 10 <br /> 80 20 i <br /> 70 30 t 1 <br /> rn <br /> L 'm <br /> a <br /> 3 60 40 3 <br /> r <br /> m <br /> m <br /> `m 50 50 n <br /> c 10 <br /> iL <br /> m 40 60it <br /> m <br /> 30 70 <br /> 20 80 <br /> 10 90 <br /> D 100 <br /> 100 50 10 5 1.0 0.5 0.1 0.05 0.01 0.005 0.001 <br /> Grain Size In Millimeters <br /> GRAVEL SAND SILT or CLAY <br /> Coeree I Flne Coerce Medlum Fine <br /> CURVE BORING NO. PENETRATION, ft MATERIAL <br /> o B-7 1 .5 Silty fine SAND (SM) <br /> + B-7 0-12 Silty fine to medium SAND (SM) <br /> r <br /> --1 <br /> m <br /> N <br /> 0 <br />