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PRE SION <br /> j Simplified Soil Behavior Type Classification <br /> for Standard Electronic Cone Penetrometer(Robertson 1986) <br /> 1000 — - <br /> 1!) <br /> I <br /> r I: <br /> 9 <br /> ro 100 <br /> U <br /> Ce <br /> m <br /> m <br /> a 10 <br /> V 3 <br /> 1 <br /> 1 <br /> 0 1 2 3 4 5 6 7 8 <br /> Friction Ratio, Rf(wo) <br /> Zone Soil Behavior Type <br /> e4wSensitive Fine Gained <br /> Organic Material <br /> CLAY <br /> Silty CLAY to CLAY <br /> SIIi Clayey SILT to Silty CLAY <br /> Sandy SILT to Clayey SILT <br /> Silty SAND to Sandy SILT <br /> 8 SAND to Silty SAND <br /> 9g SAND I <br /> J0100! Gravelly SAND to SAND <br /> Very Stiff Fine Grained (*) <br /> SAND to Clayey SAND (*) <br /> (*) Dverconsolidated or Cemented <br /> `1 1400 South 50th Street • Richmond, CA 94804 • (510) 237-4575 • FAX: (510) 237-4574 <br /> http://www.precisionsamuline.com <br /> Nationwide Direct-Push Services <br /> 1-800-671-4744 <br /> �I <br />