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CPT Classification Chart <br /> (after Robertson 1990) <br /> Non-Normalized Classification Chart <br /> I 1000 <br /> 10 .t2 <br /> I <br /> loo a <br /> t <br /> U <br /> 10 AR <br /> 1 <br /> 0 1 2 3 4 5 6 7 a <br />' Frtction Ratio (%) Rt <br /> Zone Qt f N Soil Behaviour Type <br />' 1 ® 2 sensitive fine grained <br /> 2 M 1 organic material <br /> 3 0 1 clay <br /> 4 M 1 5 silty clay to clay <br />' 5 2 clayey slit to silty clay <br /> 6 2-5 sandy silt to clayey silk <br /> 7 3 silty sand to sandy silt <br /> a 4 sand to silty sand <br />' 9 5 sand <br /> 15 6 gravelly sand to sand <br /> 11 1 very stiff fine grained • <br /> 12 2 sand to clayey sand <br /> overconsolidated or cemented <br /> 2EGG Geotechnical and Environmental In Situ Testing Contractors <br />' Los Angeles - San Francisco Houston - Aiken <br /> Vancouver Edmonton Salt Lake City - New Jersey <br /> Tel (925)343-5800 Fax (925)313-0302 E-mail gTegg(2C CCis COM <br /> 1 <br /> I <br />