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1 PT Classification Chart <br /> ' (after Robertson 19901 <br /> Non-Normalized Classification Chart <br /> 1000 <br /> 10 12 <br /> 1i <br /> 9 <br /> A 100 $ <br /> rn � <br /> c <br /> m <br /> m <br /> �j 10 <br /> 1 <br /> 6 1 2 3 4 5 B 7 8 <br /> Friction Ratio (%) Rf <br /> Zone Qt/ N Soil Behaviour Type <br /> 1 i* 2 sensitive fine grained <br /> 2 1 organic material <br /> 3 1 clay <br /> 4 0 15 silty day to clay <br />' 5 2 clayey slit to silty clay <br /> 6 25 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 /> 1 <br /> EGGGeotechnical and Environmental In Situ Testing Contractors <br /> e1 ns Anneles • San Francisco Houston - Aikpn <br /> Vancouver Edmonton • Salt Lake City - Now Jersey <br /> ' Tel (925)313-WW Fax (925)313-0302 !:mail UeSS@eClS com <br /> r <br />