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CPT Interpretations <br /> Interpreter! Equation Ref <br /> Parameter Description <br /> qt normalized for overburden stress used for seismic qct =qi•(Pa/6v')o s <br /> analysis <br /> where Pa=atm Pressure 3 <br /> q1 is in MPa <br /> gC1N gc1N"qc1 I Pa <br /> qe/ in dimensionless form used for seismic analysis 3 <br /> where Pa=atm pressure <br /> II Kc= 10 for 1,.:5-164 <br /> Kc Equivalent clean sand correction for ge1N Kc=f(Q for 10> 164 (see reference) 3 <br /> ICc= 10for 1 64<Ic<2 35 and Fc<0 5% <br /> gclNrs Clean Sand equivalent go1N 901N==gcjx•Kc 3 <br /> -- _ _ _ _ __ __ - Ic=j(3 47-bgroQ)2+(logia Fr+ 122)2 f e <br /> Where (q,P cr P <br /> 10 Soil index for estimating grain characteristics And Fris in percent 3,8 <br /> P.=atmospheric pressure <br /> Pse=abnosphenc pressure <br /> n vanes from 0 5 to 10 and is <br /> selected in an iterative manner based on the <br /> resulting lc - <br /> V -- - FC--1 75(025)-3 7 <br /> FC Apparent fines content(%) FO-000 for Ic a 3 5 3 <br /> FC=0 for Ic<126 <br /> FC=5%if164<Ic<26ANDFr<Q5 <br /> Ic<131 Zone=7 <br /> This parameter is the Sod Behavior Type zone based on 131 <Ic<205 Zone=6 <br /> Ic Zone the Ic parameter(valid for zones 2 through 7 on SBTn 2 05<Ic<2 60 Zone=53 <br /> 2 60<Ic<295 Zone=4 <br /> chart) 2 95<lc<3 60 Zone=3 <br /> Ic>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 /> a)Based on Schmertmann's method involving a <br /> Plot of SLJU I(S„Icy)Nc and OCR <br /> OCR Over Consolidation Ratio-2 methods available b)Based on OCR=X• q1-Cr, 5 <br /> 69 <br /> where an average value of k=0 3 is used <br /> State The state parameter is used to describe whether a soil is <br /> Parameter contractive(SP is positive)or dilative(SP is negative)at See reference 9,7, 5 <br /> large strains based on the work by Been and Jeffenes <br /> • <br /> GG <br /> CPTSUMM-1 20C-Rev 02-07-31 <br />