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U.S. SIEVE OPENING IN INCHES U.S. SIEVE NUMBERS I HYDROMETER <br />1. 1G On fn IM )nn <br />95 <br />90 <br />85 <br />80 <br />P 75 <br />E <br />R 70 <br />C <br />E 65 <br />N <br />T 60 <br />F <br />I 55 <br />N <br />E 50 <br />R <br />45 <br />B <br />Y 40 <br />W <br />E 35 <br />I <br />G 30 <br />H <br />T 25 <br />20 <br />IS <br />10 <br />5 <br />100 10 1 0.1 0.01 0.001 <br />GRAIN SIZE IN MILLHAETERS <br />COBBLES I <br />GRAVEL <br />SAND <br />SILT OR CLAY <br />coarse <br />fine <br />coarse <br />medium <br />fine <br />Specimen Identification <br />#1 2.8' <br />Classification <br />SILTY SAND <br />MC% LL PL PI Cc Cu <br />NP NP NP <br />I Specimen Identification I D100 I D60 I D30 D10 %Gravel I %Sand I %Silt I %Clay <br />*I #1 2.8' 1 9.50 1 0.10 1 0.1 52.2 47.6 <br />PROJECT Various Roads; Gem Lake, MN I AET JOB NO. 01-0267, <br />DATE 12/2/05 <br />AMERICAN <br />ENGINEERING GRADATION CURVES <br />TESTING, INC. <br />