Laserfiche WebLink
CPT Interpretations <br /> U Wt Unit Weight of soil determined from <br /> 1) uniform value or <br /> 2) value assigned to each SBT zone <br /> 3) user supplied unit weight profile <br /> TStress Total vertical overburden stress at mid layer depth TStress- y,h, <br /> where 2 layer unit weight <br /> h,is layer thickness <br /> ESlress Effective vertical overburden stress at and layer depth I EStress=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 <br /> where W is 1n fsf <br /> i Qs<cnt20 <br /> Neo SPT N value at 60°x6 energy calculated from QUN ratios assigned to � 3 <br /> each SBT zone <br /> (N1)w SPT Neo value corrected for overburden pressure I Nleo=Cn•No 3 <br /> Q(M)Bo Equivalent Clean Sand Correction to(N1)o 4(Nl)" = Ksrr .(N1)w 7 <br /> 1-x`SPT <br /> Where KsPr 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)6o� Equivalent Clean Sand(N1)eo (N1)wo =(N1)eo + Q(N1)6o 7 <br /> Su Undrained shear strength-Nkt is use selectable Su_Qt-ov 2 <br /> N,Er <br /> k I Coefficient of permeability(assigned to each SBT zone) 6 <br /> Bq ( Pore pressure parameter B AU 2 <br /> 11 4=Qt av <br /> Qtn I Normalized Qt for Sod Behavior Type classification as defined by Qin=Qt-v„ 4 <br /> ` Robertson, 1990 Cr „ E <br /> Rfn Normalized Rf for Soil Behavior Type classification as defined by f, ! 4 <br /> Rfn=100%• I <br /> I Robertson, 1990 Qi-a, <br /> SBTn Normalized Sod Behavior Type(slightly modified from that published by 4 <br /> Robertson, 1990 This version includes all the sod zones of the original <br /> non-normalized SBT chart-see figure 1) <br /> Qc1 Normalized Qt for seismic analysis qct =qc•(Pala,)0 5 5 <br /> where Pa=atm pressure <br /> Qc1N Dimensionless Normalized Qt1 gc1N=qcl I Pa <br /> where Pa=atm pressure <br /> APEG�G <br /> r <br />