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Drafted: Date: Checked: Date : Approved: Date: Form DFT-1.08 (7/83) Job No. : <br /> 3 <br /> n <br /> GRAIN SIZE CURVES <br /> r <br /> U.B.STANDARD SIEVE NUMBERS U.S.STANDARD SIEVE OPENINGS IN INCHES HYDROMETER <br /> r 100 J z �'Ih I IIh 8 e u to zo so a so To too tw zoo 0 <br /> a <br /> 2 <br /> 90 10 <br /> 80 20 <br /> 70 30 r 1 <br /> t .0 <br /> P3 <br /> 3 60 40 m <br /> r <br /> m 50 50 <br /> c 4 <br /> LL U <br /> c 40 60 c <br /> m m <br /> U V <br /> 30 70 <br /> 20 80 <br /> 9 <br /> 10 0 <br /> 100 <br /> 0 <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 /> Coerce Fine Coerce Medium I Fine <br /> CURVE BORING NO. PENETRATION , ft MATERIAL <br /> o B-3 3 Silty fine to medium SAND (SM) <br /> 0 B-3 37 Silty fine to medium SAND (SM) <br /> D In, B-3 45. 5 , Well graded fine to coarse SAND with <br /> silt, slightly gravelly (SW-SM) <br /> M B-3 9 <br /> tSilty fine to medium SAND (SM) <br /> 0) <br />