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CPT Interpretations U Wt Unit Weight of sal determined from 1) uniform value or 2) value assigned to each SBT zone 3) user supplied und weight profile TStress Total vertical overburden stress at mid layer depth TStress _+-i where y,as layer and weight hi is layer thickness - - EStress Effective vertical overburden stress at mrd layer depth EStress= stress-Ueq Ueq Equilibrium pore pressure determined from T1- 1) hydrostatic from water table depth 2) user supplied profile 1 Cn SPT Neo overburden correction factor Cn=(m)ro 5 where a,,is in isf 05<c„<20 N80 SPT N value at 60%energy calculated from Qt1N ratios assigned to each 3 SBT zone (N1)So SPT Neo value corrected for overburden pressure N18o=Cn a Nw 3 ' e(Nl)o Equivalent Clean Sand Corrections to(N1)to o(h 1}� = 1 KK' a(N1), , 7 sr7 Where Ksar is defined as 0 0 for FC<5% 0 0167 a(FC-5) for 50%<FC<35% 05 for FC>35% FC-Fines Content in% -- - (N1)SoM Equivalent CieanSand(N1)so (N 1)ao�=(N 1)to + a(N1)eo I 7 Su Undrained shear strength-Nkt is use selectableSu=Or-6v 2 - N,e k Coefficient of permeability(assigned to each SBT zone) - fi ' Bq Pore pressure parameter - g4- - _ 2 Qtn Normalized Qt for Soil Behavior Type classification as defined by Qr 4 Robertson 1990 6 v Rfn Normalized Rf for Sal Behavior Type classification as defined by fs 4 Rfn=100%0 Robertson,1990 Qt-Uy - SBTn Normalized Soil Behavior Type(slightly rnodi ied from that published by 4 Robertson, 1990 This version includes all the soil zones of the onginal non-normalized SBT chart-see figure 1) Qct Normalized Qt for seismic analysis qct =qc c(Pa1(7„')a s I 5 where Pa=atm pressure Qc1 N Dimensionless Normalized Qt1 qct N=qc1 1 Pa - where Pa=aim pressure Ice 1 I