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CPT Classification Chart <br />(after Robertson and Campanella, 1988) <br />KEHOE TESTING & ENGINEERING <br />1000 = <br />11 <br />100 z , 8 <br />10- <br />99' <br />0 1 2 3 4 5 6 7 8 <br />Zone t / N Soil Behavior Type UCSCS <br />1/2 sensitive fine grained OL-OH <br />2/1 organic material Pt-OH <br />31 1 clay CH <br />4 1 1.5 silty clay to clay CL-CH <br />512 clayey silt to silty clay ML-CL <br />6 1 2.5 sandy silt to clayey silt MH-ML <br />7m3 silty sand to sandy silt SM-ML <br />8 4 sand to silty sand SP-SM <br />9 m 5 sand SP <br />10 1 6 gravelly sand to sand SW-SP <br />11 1 very stiff fine grained *CL-MH <br />12 m 2 sand to clayey sand *SP-SC <br />* overconsolidated or cemented <br />Friction Ratio, Rf (%) <br />Cone Resistance, qt (tsf)