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CPT Interpretations <br /> U Wt. Unit Weight of sal determined from <br /> • 1) uniformvalue or <br /> value a <br /> 2j value assigned to each SBT zine <br /> 3) user supplied unit weight profile <br /> TStress Total vertical overburden stress at mid toyer depth --- TStress Y.h, -----— - <br /> where n is layer and weight <br /> h,is layer thickness <br /> EStress Effectne vertical overburden stress at mrd layer depth - &tress=TStress—Ueq <br /> Ueq Equilibrium pore pressure determined from - ~ <br /> 1) hydrostatic from water table depth <br /> 2) user supplied profile <br /> Cn SPT Neo overburden correction factor Cn=(Qjo s I <br /> where v,'Ls in tsf <br /> 05<Cn<20 <br /> Neo SPT N value at 60%energy calculated from QJN ratios assigned to each 3 <br /> SBT zone <br /> (N1)do SPT Neo value Corrected for overburden pressure N3eo=Cn•Nco 3 <br /> A(Ni)Bo Equivalent Clean Sand Correction to(N1)OG �flyi)bo Ks'r •(Ni)bn 7 <br /> i—KSPY <br /> Where Ksvr is defined as <br /> 0 0 for FC<5% <br /> 0 0167•(FC-5) for 5%<FC<35% <br /> 05 for FC>35% <br /> • _ ___ _ _ FC-Fines Content in% <br /> (N1)eoc, Equivalent Clean Sand(N1)so (N1). + A(NI)OO 7 <br /> Su Undrained shear strength-Nkt is use selectable SL=Q1-a, - - 2 <br /> Nkr <br /> k Coefficient of permeability(assigned to each SBT xoze) 6 <br /> Bq Pore pressure parameter B9= au 2 <br /> Qr-a, _ <br /> Qtn Normalized Qt for Soil Behamor Type classif,catron as defined by On=Qt-cr, 4 <br /> Robertson 1990 Cr , <br /> Rfn Normalized Rf for Sal Behavior Type classification as defined by 4 <br /> Robertson 1990 Rfn=I O(3% <br /> Qt—rY. <br /> SBTn Normalized Soil Behavior Type(slightly modified from that published by 4 <br /> Robertson 1990 This version includes all the soil zones of the original <br /> rimnomalrzed SBT chart-see figure 1) <br /> Qct Normalized Qt for seism c analysis qci =qc•(Pa/a,)o s � 5 <br /> where Pa=aim pressure <br /> Qc1N Dimensionless Normalized Qtl gc1N=qcf /Pa <br /> where Pa=atm pressure <br />