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Coefficient of Permeability (cm/s) <br /> LOG (K) <br /> -8 -7 -6 -5 -4 -3 -2 -1 0 1 <br /> f--- 3 __ -- 4 -- -- 5 -- -- 6 -- -- 7 -- -- 8 --t-- 9 -- t------10 ----- <br /> (10) clean sand <br /> and gravel <br /> (9) clean sand <br /> (8) silty sand <br /> (7) sandy slit <br /> (6) silt CPT Classification Chart <br /> (5) clayey slit (after Robertson and Campanella, 1986) <br /> (4) silty clay 1000 <br /> (3) clay a yi <br /> � <br /> (1) sensitive fines .0 140Cn <br /> 9 <br /> (2) fibrous organics a <br /> m <br /> °1 10 <br /> c <br /> (12) cemented sands U <br /> (11) cemented fine grained 1 <br /> 0 1 2 3 4 5 6 7 8 <br /> Friction Ratio (%), Rf <br /> EGG Estimation of Coefficient of Horizontal Permeability <br /> Based on Penetration Resistance and Sleeve Friction <br /> GfeggInSitu Inc reference COneTec investigations Ltd , 1994 <br />