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SOIL CLASSIFICATBON CHART <br />' 1000 <br /> 10 12 <br /> 11 <br /> Cl 9 <br /> 100 $ <br /> 7 <br /> c <br />' m <br /> U 10 <br />' _ 3 <br /> 1 <br /> 1 2 <br /> 1 <br /> 0 1 2 3 4 5 6 7 8 <br /> Friction Ratio (%), Rf <br /> Zone Qt 1 N Soil Behaviour Type <br /> 1 ❑ 2 sensitive fine grained <br /> 2 ❑ 1 organic material <br /> 3 ❑ 1 clay ; <br /> 4 ❑ 15 silty clay to clay <br /> 5 ❑ 2 clayey silt to silty clay <br />' 6 ❑ 2.5 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 E] 6 gravelly sand to sand { <br /> 11 _ 1 very stiff fine grained <br /> 12 ❑ 2 sand to clayey sand <br /> * overconsolidated or cemented <br /> After Robertson and Campenella <br /> Figure 5 <br />