Laserfiche WebLink
I <br /> CPT Interpretations <br /> U Wt Unit Weigh of sod determined from <br /> • 1) undorm value or <br /> 2) value assigned to each SBT zone <br /> 3) user suppNed unit wetght profile <br /> TStress Total vertical overburden stress at mid layer depth - --- - u TStress=E y,h, - -- -- T - <br /> where n is layer unit weight <br /> h,r,layer thK*ness <br /> EStress Effective verbcal�n stress at rrrd-layer depth � F.Stress=TStress-Ueq -- <br /> Ueq Equilibnum pore pressure determined from <br /> 1) hydrostatic from water table depth <br /> 2) user supplied profile <br /> Cn SPT Nao o erbu correction factor - <br /> where ars in tsf <br /> _ _ <br /> N60- -SPT N value at 5096 energy calculated from Qt1N ratios as�to each --- - 3_ <br /> SBT zone <br /> (N1)so SPT Nao vatue eorreated for overburden pressure N1 w=Cn•Neo 3 <br /> A(Nt)eo Equwalent Clean Sand Correction to(N1 -- µ y - a(Nt) Ksrr •(Nt) - _ -- - 7 <br /> l <br /> Where Ksp-r is defined as <br /> 0 0 for FC<5% <br /> 0 0167•(FC-5) for 5%<FC<35% <br /> 05 for FC>35% <br /> 0 FC-Fines Content in% <br /> (N1)Wn Equrvalent Clean Sand(N1)ao - (N1)eD,=(N1)ao + A(N1). I 7 <br /> Su Undrale <br /> ined shear strength-Nld r use sectable Su=¢t-ay 2 <br /> Nk <br /> kI Coefficient of permeability(assigned to each SBT zone) I - - 6 <br /> Bq I Pore pressure parameterf B Au - 2 - <br /> 4=Q,-Qy <br /> Qtn Normahzed Qt for Sal Behavbr Type dass+fication as defined by =Qt-a. 4 <br /> I Robertson,1990 a y - <br /> Rfn Normalized Rf for Sal Behavior Type classification as defined by f, 4 <br /> Robertson,1990 <br /> SB-fn Nomtafized SaI Beha►nor l j ( 9�Y�wdrfied from tf�t published by F - - 4 <br /> Robertson.1990 This version includes all the sod zones of the org M <br /> rKwHv mal¢ed SBT chart-see figure 1) <br /> Qct Normaftzed Qt for sersmro am sus -- -- - - qct =qc•(Pala„)o 5 5 <br /> where Pa=atm pressure <br /> Qct N Dimension�ss Narmal¢ed Qt1 l- - _ - - qct N=qct 1 Pa - - -- <br /> where Pa=atm pressure <br />