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'------- —_—_-_-------- — CPT Interpretations <br /> Interpreted <br /> Parameter Description Equation Ref <br /> q°' qt normalized for overburden stress used for seismic qc,=qt•(Palcs„')°5 <br /> analysis-� --- where Pa=atm Pressure -Y <br /> qt is in ARPa <br /> gc1N — <br /> q.t in dimensionless form used for seismic analysis gc1N=qci I Pa 3 <br /> where Pa=atm pressure <br /> --Kc-=1 0 for 164 <br /> Kc Equivalent clean sand correction for qc,N Kc=f(Ir)for Ic> 1 64 (see reference) 3 <br /> K°=10 for 164<1c<2 36 and Fc<0 5% <br /> gclNra Clean Sand equivalent go1N qcrnrs=gCIN•Kc 3 <br /> !c=((3 47-1ogjoQ) +(login Fr+122 ------ <br />' Where (q,-Q. P, " <br /> Ic Soil index for estimating grain characteristics And Fr is in percent 3, 6 <br /> Pa=atmospheric pressure <br /> Paz=atmospheric pressure <br /> n vanes from 0 5 to 10 and is <br /> selected in an iterative manner Based on the <br /> resulting tc__rv_ ___-_-- <br /> FC=1 75(!cs ss)_3 7 <br /> FC Apparent fines content(%) FC--100 for lc>3 5 3 <br /> FC--O for Ic<126 <br /> FC=5%if 164<!c<26AND Fr<O5 <br /> Ic<1 31 Zone=7 <br /> This parameter is the Soil 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 205<ic<260 Zone=S2 60<Ic<2 95 Zone=4 3 <br /> chart) 2 95<Ic<3 60 Zone=3 <br /> Ic>3 60 Zane=2 <br /> Friction Angle determined from one of the following user <br /> selectable options <br /> PHI <br /> a) Campanella and Robertson See reference 5 <br />' b) Durgunoglu and Mitchel <br /> c) Janbu <br /> Relative Density determined from one of the following user <br />' selectabie options <br /> Dr a)Ticino Sand See reference 5 <br /> b) Hokksund Sand <br /> c)Schmertrnann 1976 <br /> d)Jamiolkowski-All Sands <br /> a)Based on Schmertmann's method involving a <br /> plot of Sulo, I(Su16„')Nc and OCR <br /> OCR Over Consolidation Ratio-2 methods available b) Based onqt-Qy 5 <br /> OCR_x• <br /> 1 - -- - — --_ 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 Jefferies <br /> 1 <br /> EGG <br /> CP75UMM-1 20C-Rev 02-07-31 <br />