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tip <br /> v'=`* SOIL CLASSIFICATION CHART <br /> t <br /> r 1000 <br /> 10 <br /> 12 <br /> Q s' <br /> 100 8 ". <br /> 1 � <br /> C <br /> O 10 <br /> 1 <br /> 0 1 2 3 4 5 6 7 8 <br /> Friction Ratio (%), Rf <br /> 1c ., <br /> Zone Qt 1 N Soil Behaviour Type. <br /> 1 ® 2 sensitive fine grained <br /> 2 i 1 organic material <br /> 3 M 1 clay <br /> 4 i 1.5 silty clay to clay <br /> 5 M 2 clayey silt to silty clay <br /> 6 f 2.5 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 1 6 gravelly sand to sand <br /> 11 1 very stiff fine grained <br /> 12 D 2 sand to clayey sand * r <br /> * overconsoiidated or cemented <br /> After Robertson and Campenella <br /> Figure 4 <br /> 1 <br />