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CPT Classification Chad <br /> (after Robertson 1990) <br /> Non-Normalized Classification Chart <br /> laoo <br /> 1D 12 <br /> 11 <br /> a too S <br /> rn 7 <br /> c <br /> c`u <br /> W <br /> w <br /> c <br /> U 10 <br /> 7 <br /> 0 1 2 3 4 5 6 7 8 <br /> Friction Ratio (%), Rf <br /> Zone Qt/ N Soil Behaviour Type <br /> 1 © 2 sensitive fine grained <br /> 2 © 1 organic material <br /> 3 El 1 clay <br /> 4 ® 1 5 silty day to clay <br /> 5 C7 2 clayey silt to silty clay <br /> 6 o 2.5 sandy silt to clayey silt <br /> 7 3 silty sand to sandy silt <br /> 8 4 sand to silty sand <br /> 9 5 sand <br /> 10 6 gravelly sand to sand <br /> 11 1 very stiff fine grained <br /> 12 2 sand to clayey sand <br /> * overconsolidated or cemented <br /> JE"GG Geotechnical and Environmental In Situ Testing Contractors <br /> Los Angeles - San Francisco Houston Aiken <br /> Vancouver Edmonton - Salt Lake City - Now Jersey <br /> Tel (925)313-5800 Fax (925)313-0302 E-mail eyegg(fyecis com <br /> S <br />