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CPT Interpretations Page 417 <br /> Interpreted Description Equation Ref <br /> Parameter Au <br /> • <br /> 84=4t-6, <br /> Bq Pore pressure parameter where_Eu=u_u 1,5 <br /> and u=dynamic pore pressure <br /> u.q=equilibrium pore pressure <br /> W.we Normalized%for Soil Behavior Type classification as Qt-qt-CT, --� --�� 2,5 <br /> Qi defined by Robertson,1990 a �Y � <br /> Normalized Friction Ratio for Soil Behavior Type Fr=100%• fs 2,5 <br /> Fr classification as defined by Robertson,1990 qt-Q. <br /> SBTn Normalized Sal Behavior Type as defined by Robertson See Figure 2 2,5 <br /> and Campanella <br /> SBT-BD Non-normalized soil behavior type based on the Bq See Figure 5-7(reference 5) 2,5 <br /> parameter — <br /> SBT-BQn Normalized Soil Behavior base on the Bq parameter See Figure 5.8(reference 5)or Figure 3 2,5 <br /> (reference 2) <br /> _1c-=__1(3.47-iogtoUf+(loyro Fr+i.22)f <br /> Where_ Q-(IIP"Ir.I <br /> I. Soil index for estimating grain characteristics And Fr is in percent J 3,8 <br /> pe=atmospheric pressure <br /> P"=atmospheric pressure <br /> n varies from a5 to 1.0 and is <br /> selected in an iterative manner based on the <br /> FC—1.75(1e�)-3.7 <br /> FC Apparent fines content(%) Fr--100 for lc>3.5 3 <br /> FC=O for lc< 1.26 <br /> FC=5%if 1.64<Ic<2.6 AND Fr<0.5 <br /> !c a 1.31 Zone=7 <br /> This parameter is the Sal Behavior Type zone based on 1.31<Ic<2.05 Zone=6 <br /> Ic Zone the Ic parameter(valid for zones 2 through 7 on SBTn 2.05<Ic<2.60 Zone=5 3 <br /> 2.60<Ic<2.95 Zone=4 <br /> chart) 2-95<lc<3.60 Zone=3 <br /> Ic i 3.60 Zone=2 <br /> Friction Angle determined from one of the following user <br /> selectable options: <br /> PHI 5 <br /> a) Campanella and Robertson See reference <br /> b) Durgunoglu and Mitchel <br /> c) Janbu <br /> Relative Density determined from one of the following user <br /> selectable options: <br /> Dr a)Ticino Sand See reference 5 <br /> b) Hokksund Sand <br /> c)Schmertmann 1976 <br /> d)Jamiolkowski-All Sands <br /> GREGG <br /> CPTSUMM-MethodsGV122a-Rev-08-10-2004 <br />