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CPT Interpretations Page 517 <br /> Interpreted Description Equation Ref <br /> Parameter <br /> Youngs Modulus based on the work by Baldl There are <br /> three types of sands considered in this technique The user Mean normal stress Is evaluated from <br /> selects the appropriate type for the site from <br /> 1 <br /> a)OC Sands �_ —3° •+0�+6+ <br /> Youngs b)Aged NC Sands 5 <br /> Modulus E c)Recent NC Sands where o'=vertical effective stress <br /> horizontal effective stress <br /> Fach sand type has a family of curves that depend on mean <br /> normal stress The program calculates mean normal stress and al,= K°'a, with Ko assumed to be 0 5 <br /> and linearly interpolates between the two extremes provided <br /> In Baidi's chart. <br /> Su UndraEned shear strength-iVK is user selectable <br /> Su=9r—Q• 1,5 <br /> Nt, <br /> a)Based on Schmertmann's method involving a <br /> plot of Sjc I(Sjc )„c and OCR <br /> OCR Over Consolidation Ratio 9 <br /> where the Su/p'rano for NC clay Is user <br /> selectable <br /> • <br /> CPTSUMM-MethodsGV122a—Rev O8-10-2004 <br />