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CPT Interpretations <br /> U.Wt. Unit Weight of soil determined from: <br /> 1) uniform value or <br /> j 2) value assigned to each SBT zone. <br /> 3) user supplied unit weight profile <br /> TStness Total vertical o+rerburclen stns at mid layer depth Myress= <br /> Y,h, <br /> where p is layer unit weight <br /> A is layer thickness <br /> EStress. Effective vertical.overburden stress at mid h....._......�—_�.._....._._.... <br /> I . -..__. - - q-----.--......_.. <br /> �depth EStress=TStress-Ue •� <br /> Ueq Equilibrium pore pressure determined from: <br /> 1) hydrostatic from water table depth <br /> ' 2) user supplied profile - <br /> C SPT Neo overburden correction factor Cn=(av7 <br /> where m'is in tsf <br /> 05<C.<2:0.. <br /> Ne. SPT N value at 609'.energy calculated from Qt/N ratios assigned to each 3 <br /> SBT zone <br /> SPT Nee value corrected for o+,,erbur den pre ssure Niao=Cn•Noo 3 <br /> A(Ni)eo Equivalent Clean Sand Correction to(N1)60 Kir. _......-_._........ 7.._ <br /> srr <br /> Where. K8j.T is defined as: <br /> 0.0 for FC<5%. <br /> 0.0167.(FC-5) for 5%<FC<35% <br /> 0.5 for FC n 35% <br /> FC-Fines Content in% <br /> i- �..._... ... ..........lent C._-._.....__-.. ..... ..__.._.__._...._...__..._..-...._......_.._...... ----- -..__... _. .._ ..._..._.. _ - ..._...._ ..._._.__ - ._..._..... _._.._ <br /> N1 e.os Equivalean Sand(Id1)eo (N1 (N1)0 + e(N1)" 7 <br /> Su Undrained shear strength-Nkt is use selectable Su-Q1-v� 2 <br /> f Nw <br /> k Coefficient of permeability(assigned to each SBT zone) 6 <br /> Bq Pare pressure parameter Bq as 2- <br /> Qr av <br /> __. ....... <br /> _._.._.... . _._..__. <br /> Qin Normalized Qt for Soil Behavior Type classification as defined by Qr-vY 4 <br /> Robertson,1990 On= <br /> Cr <br /> . . ..._..-..._.-... ...._.....-.-. ..__.�......_......_..__............_. . - ..... - -------- ._.... .......... ..... _.... .. - <br /> Rfn Normalized Rf for Soil BeFiavior T classification as defined by f, 4 <br /> Robertson,1990 Rfn 100%+ <br /> Q,-Qv <br /> - -......... ..... <br /> ..... ....._......_...._.,.. <br /> SBTn Normalized Soil Behavior Type(slightly modified from that published by 4 <br /> i Robertson,1990. This version includes all the soil zones of the original <br /> non-normalized SBT chart-see figure 1) <br /> Qct Normalized Qt for seismic analysis q <br /> _. L <br /> ct_ _...qc (Pal <br /> .... ..._...ff�.......0.5............ <br /> = . ) <br /> where: Pa=atm.pressure <br /> Qct N Dimensionless Normalized Qt1 ----....._.._ <br /> qct N=qc1 l Pa <br /> where: Pa=atm.pressure <br /> f � <br /> CONE EC <br />