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' CPT Interpretations <br />' Interpreted I Description Equation Ref <br /> Parameter <br /> . qci qt normalized for overburden stress used for seismic get=gi-(Pa/6„)0 5 <br />' analysis where Pa=atm Pressure 3 <br /> qt is in MPa <br /> gciN <br /> qct in dimensionless form used for seismic analysis' 1 g°1N=qci 1 Pa I 3 1 where Pa=atm pressure <br /> KG= 10 for lc.:!�164 <br /> Kc Equivalent clean sand correction for gc1N &=f{!j for lc> 1 64 (see reference) 3 <br />' Kc=10 for 164<1c<2 36 and Fc<0 5% <br /> gc,Ncs I Clean Sand equivalent gciN I gclm==gciN•KCS 1 1 3 <br /> !c=j(3 47-logrnQ)2+(logio Fr+ 1 22)2]0 s <br /> whfr ; <br /> ere (q,Pa`v��Po\� <br /> Ic Soil index for estimating grain characteristics And Fr is in percent 3, 8 <br /> Pe=atmospheric pressure <br /> Pae=atmosphenc pressure <br /> n vanes from 0 5 to 10 and is <br /> selected in an dteratme manner based on the <br /> resulting 1. <br /> FC=1 75(1632-5)-3 7 <br /> FC Apparent fines content(%) FC=100 for lc>3 5 3 <br />' FC=O for 1c< 126 <br /> FC=5%if964<1c<26ANDF<<O5 <br /> Ec<131 Zone=7 <br /> This parameter is the Sod Behavior Type zone based on 1 31 <to<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 /> chart) 2 60<Ic<2 95 Zone=4 <br /> 295<Ic<360 Zone=3 <br /> Ic>3 60 Zone=2 <br /> I 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 /> I c)Schmertmann 1976 <br /> d)Jamiolkowski-AEI Sands <br /> a)Based on Schmertmann's method involving a <br /> Plot of S,J6„'1(S„IQ,;)Nc and OCR <br /> OCR Over Consolidation Ratio-2 methods available b)Based on r qt-er, 5 <br /> OCR=K•Il JI <br /> Q, <br /> where an average value of k=0 3 is used <br /> i <br /> State The state parameter is used to descnbe 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 /> GGI <br /> CPTSl1MM-1 20C-Rev 02-07-31 <br />