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1 <br /> CPT Interpretations <br />' U Wt. Unit Weight of sari 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 - -' - - -- - -- <br />' TSiress y h, <br /> where n is layer unit weight <br /> A is layer thickness <br /> EStress Effective vertical overburden stress at mid' layer depth - - - Ueg- ---- <br /> _ EStress TM TStress- ----__ <br /> Ueq Equilibnum pore pressure determined from <br /> 1) hydrostatic from water table depth <br /> 2) user supplied profile <br />' Cn SPT Nao overburden correction factor -0 s - -- _ <br /> where Gr"is in tsf <br />' Nea SPT N value at 60%energy calculated from Qt/N ratios assigned to each 0 5<C„<2 0 - <br /> SBT zone 3 <br /> (NI)60 SPT Nsa value corrected for Overburden pressure <br /> Mao=Cn*NM f a <br />' Q(N1)ao Equivalent Clean Sand Correction to(N1)eo 1 <br /> A(M), = Kir 7 <br />' Where KsPr is defined as <br /> 0 0 for FC<5%Q <br /> 0 4167•(FC-5) for 5%<FC<35% <br /> 05 for FC?35% <br /> FC-Fines Content in a/o <br /> (N1)eor� Equivalent Clean Sand(Ni (N1)eo.=(N1)80 + �(N1}eo - - 7- <br />' Su Undrained shear strength-Nkt is use selectable - - <br /> SU Di-av 2 <br /> N,u <br />' k Coefficient of permeability(assigned to each SBT zone) - - _- _- <br /> s <br /> Bq Pore pressure parameter - au - <br /> 2 <br />' <br /> Qtn Normalized Qt for Soil Behavior Type classification as defined b Bq=Qr- <br /> Robertson, 1990 y on=£�-6Y 4 <br /> Q <br /> V <br /> Rfn Normalized Rf for Sal Behavior Type classification as defined by - <br /> Robertson, 1990 Rfn=200%. fs 4 <br /> - - Qt- <br /> a„ <br /> SBTn Normalized Sat Behavior Type(slightly modified from that published by - <br />' <br /> Robertson 1990 This version includes all the sod zones of the original 4 non-normalized SBT chart-see figure 1) <br /> Qc1 Normalized Qt for seismic analysis <br /> qG1 =qC.(Parr)o <br />' Qc1N Dimensionless Normalized Qt1 - - where Pa=atm pressure- - <br /> gc1N qct !Pa <br /> where Pa=atm pressure <br /> CONE EC <br />