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' CPT Interpretations <br /> U Wt Unit Weight of sod 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 rrud layer depth TStress=E y,h, <br />' where p is layer unit weight <br /> h,is layer thickness <br /> EStress Effective vertical overburden stns at mid layer depth EStress=Mress—Ueq <br />' Ueq Equilibnum pore pressure determined from <br /> 1) hydrostatic from water table depth <br /> 2) user supplied profile <br /> Cn SPT Neo overburden correction factor Cir=(v -0a <br /> where Q,, rs in tsf <br /> 05<C„<20 <br /> Neo SPT N value at 60%energy calculated from MIN ratios assigned to each [ 3 <br /> ISBT zone <br /> (N 1)so SPT Neo value corrected for overburden pressure Niso=Cr?.Neo f 3 <br />' A(N1)go Equivalent Clean Sand Correction to(N1)eo A(A 1)& M Ksar '(h 1), 7 <br /> I-Ksvr <br /> Where KsPT 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)6a, Equivalent Clean Sand(N1)6o (Nl)eoa=(N 1),, + o(NI�o 7 <br /> Su Undrained shear strength-Nkt is use selectable Su=Qt-av 2 <br /> Ak <br /> I k Coefficient of permeabiltty(assigned to each SBT zone) - 6 <br /> BqI Pore pressure parameter B4= du 2 <br /> Qt—6y <br /> I Qtn Normalized Qt for Sal Behavior Type classification as defined by _Qt- 4 <br /> Robertson 1990n Cr <br /> Rfn Normalized Rf for Sal Behavior Type classrfscation as defined by A 4 <br /> Rfn= <br />' Robertson, 1990 Or-av <br /> SBTn Normalized Soil Behavior Type(sightly,modified from that published by 4 <br /> Robertson, 1990 This version includes all the sot]zones of the original <br /> norr-normalized SBT chart-see figure 1) <br /> Qct Normalized Qt for seismic analysts qct =qc•(Pa/aw')o s 1 5 <br /> where Pa=atm pressure 1 <br /> Qc1N Dimensionless Normalized Qt1 qct N=qc1!Pa - - <br /> where Pa=atm pressure <br /> CONETEC <br />�l <br />