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Q <br />'3 <br />W <br />N <br />N <br />Z <br />a <br />(7 <br />100 <br />90 <br />80 <br />70 <br />L <br />60 <br />T <br />c 50 <br />LL <br />C <br />N <br />U <br />a 40 <br />30 <br />20 <br />10 <br />U.S. SIEVE OPENING IN INCHES I U.S. SIEVE NUMBERS I HYDROMETER <br />A 7 4 Ah 7 a In A in rn inn Onn <br />100 10 1 0.1 0.01 0.001 <br />Grain Size in Millimeters <br />Cobbles <br />Gravel <br />I Sand <br />Silt or Clay <br />coarse I fine <br />I coarse I medium I fine <br />Point <br />Depth <br />Classification <br />LL <br />PL <br />PI <br />C, <br />Cu <br />• <br />TP-1 <br />2.0 <br />Gravelly, silty SAND (SM) <br />m <br />TP-1 <br />3.5 <br />Slightly gravelly, very silty SAND (SM) <br />A <br />TP-2 <br />5.5 <br />Slightly gravelly, very sandy, SILT/CLAY (ML) <br />* <br />TP-3 <br />8.0 <br />Slightly gravelly, very silty and clayey, SAND (SM) <br />Point <br />Depth <br />p <br />D 1o0 <br />D 60 <br />D 50 <br />D 30 <br />D 10 <br />oarse <br />Gravel <br />o ine <br />Gravel <br />°o Coarse <br />Sand <br />% Medium <br />Sand <br />o Fine <br />Sand <br />% Fines <br />0 <br />TP-1 <br />2.0 <br />25 <br />1.131 <br />0.468 <br />0.118 <br />3.1 <br />19.7 <br />12.1 <br />16.3 <br />24.8 <br />24.0 <br />m <br />TP-1 <br />3.5 <br />25 <br />0.211 <br />0.124 <br />4.2 <br />7.2 <br />3.9 <br />12.5 <br />32.8 <br />39.4 <br />A <br />TP-2 <br />5.5 <br />19 <br />0.142 <br />0.085 <br />0.0 <br />7.8 <br />3.3 <br />9.7 <br />31.7 <br />47.6 <br />* <br />TP-3 <br />8.0 <br />25 <br />0.175 <br />0.104 <br />2.1 <br />9.7 <br />3.1 <br />9.4 <br />32.0 <br />43.8 <br />w OTw 5T Mukilteo SD Retaining Wall <br />O9001 Airport Road <br />Everett, Washington <br />Cc = D302/(D60* D10) To be well graded: 1 < C, < 3 and <br />C=D60010 C, > 4 for GW or C, > 6 for SW <br />Figure <br />Grain Size Test Data 11 <br />