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CPT Classification Chart <br /> (after Robertson 1990) <br /> Non-Normalized Classification Chart <br /> 1000 <br /> 10 \ 12 <br /> �� 11 <br /> loo <br /> rn 7 <br /> c <br /> C <br /> m <br /> on <br /> w <br /> U 10 <br /> 1 <br /> 0 1 2 3 4 5 B 7 8 <br /> Friction Ratio (%) Rf <br /> Zone Qt/ N Soil Behaviour Type <br /> 1 Ed 2 sensitive fine grained <br /> 2 F1 1 organic material <br /> 3 4- 1 clay <br /> 4 ® 1 5 silty clay to clay <br /> 5 1 2 clayey silt to silty clay <br /> 6 25 sandy silt to clayey silt <br /> 7 3 silty sand to sandy silt <br /> a 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 /> EGGGeotechnical 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-rear! egg U,ecis com <br />