Laserfiche WebLink
kid <br /> CPT Interpretations <br /> 1 <br /> 4 V r3(,.WWt! Unit Weight of soil determined from: <br /> 1) uniforrn 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 Stress= Y h <br /> where pr is layer unit weight <br /> h,is layer thickness <br /> EStress Effective vertical overburden stress at mid layer depth EStress=Mress—Ueq h <br /> Ueq Equilibrium pore pressure determined from: f <br /> 1) hydrostatic from water table depth I <br /> 2) user supplied profile <br /> I <br /> Cn SPT Nea overburden correction factor Cn=(u,7b <br /> where ov'is in tsf II <br /> 0.5<Cnc2.0 4 <br /> it ._.._...- _ . . _......_ _ . ._. ...... . . ._ _..__ ..: _...... .. . ......._ . _ <br /> Neo . SPT N value at 60%energy calculated from MIN ratios assigned to 3 G <br /> each SBT zone • <br /> ....... - <br /> _. .. .._. 3 <br /> (N1W SPT Nevalue corrected far overburden pressure <br /> N1so=Cn.No <br /> XiNI� Equivalent Clean Sand Correction to(N1)6o A{N]). = Ksrr •{Nl)� 7 <br /> Where: fsr is defined as: <br /> 0.0 for FC a 5% <br /> '0.0 167 a(FC-5).for 5%t FC<35% <br /> 0.5 for FC>35% <br /> FC-Fines Content in% I <br /> (N1)Boca Equivalent Clean Sand(N1)15o (N1)eo,=(N1)eo + A(NI)Bu l <br /> Su Undrained shear stren th-Nkt is use selectableSu=Qt—Gy 2 <br /> Nift <br /> k I Coefficient of permeability(assigned to each SBT zone) <br /> 8.. <br /> I <br /> - <br /> Bq Pore pressure parameter _B _ _ - <br /> q <br /> Q1 Du 2 <br /> . <br /> Qtr <br /> s .. _ _Normalized Qt for Sail Behavior Type classification as defined by Qtn Qt_4�r� <br /> 4 <br /> Robertson, 1990 a r <br /> Rfn Normalized Rf for Soil Behavior Type classification as defined by Rfn 100% fR <br /> a <br /> Robertson,1990 Qt— <br /> SBTn Normalized Soil Behavior Type(slightly modified from that published by <br /> Robertson, 1990, This version includes all the soil zones of the original <br /> non-normalized SBT chart-see figure 1) <br /> r <br /> Qct Normalized Qt for seismic analysis qct =qc•(Pa/(TY)O5 5 r <br /> where: Pa=atm.pressure <br /> Qc1N Dimensionless Normalized Qti gc1N=qc1/Pa <br /> where: Pa=atm.pressure k <br /> l; <br /> IEGG <br /> II <br />