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U.S.SIEVE OPENING IN INCHES I U.S.SIEVE NUMBERS I HYDROMETER <br /> 6 4 3 2 1 34k....41./2. 3 6 810 1416 20 30 40 50 60 100140 200 <br /> 100 I I -- <br /> 90 ' ' - ' <br /> • <br /> 80 <br /> • <br /> \II.ili- <br /> 70 - <br /> , <br /> �60 • <br /> 10 <br /> c 50 <br /> Li_ • <br /> U • <br /> a 40 . . <br /> 30 •• <br /> P. <br /> 20 - <br /> 10 <br /> 0 • • <br /> 100 10 1 0.1 0.01 0.001 <br /> Grain Size in Millimeters <br /> Cobbles Gravel Sand Silt or Clay <br /> coarse fine coarse medium fine <br /> Point Depth Classification LL PL PI Cc Cu <br /> • TP-1 6.0 VERY SANDY SILT/CLAY (CH) <br /> m TP-2 0.5 SILTY,VERY GRAVELLY SAND (SM) <br /> A TP-3 1.2 SLIGHTLY GRAVELLY,SILTY SAND (SM) <br /> Point Depth D D D D D %Coarse %Fine %coarse "%Medium %Fine %Fines <br /> p 90 6o 50 30 10 Gravel Gravel Sand Sand Sand <br /> • TP-1 6.0 0.782 0.114 0.0 0.4 1.8 17.1 24.6 56.2 <br /> I TP-2 0.5 32.203 1.466 0.553 0.141 29.0 3.4 5.0 15.9 23.0 23.7 <br /> A TP-3 1.2 3.483 0.474 0.295 0.111 0.0 6.5 9.7 25.7 36.3 21.8 <br /> Cc=D302/(D60*D10) To be well graded: 1 <Cc<3 and <br /> Cu=D60/D10 C,>4 for GW or Cu>6 for SW <br /> COIFKikuchi Retaining Wall Figure <br /> T 815 34th Street Grain Size Test Data 7 <br /> Everett,Washington 98201 <br />