Here, u2 is the measured pore pressure and uo is the in situ pore pressure.It is clear from Eqs. 5.7 to 5.9 that cuA will depend on the cone factors. Severalcorrelations exist for the Nkt, Nke, and NΔu parameters to calculate cuA. Karlsrud et al.[26, 27], who compared the CPTU with cuA from block samples and suggested thecone factors Nkt, proposed the widely accepted method in Norway and Nu basedon the OCR and soil plasticity index (Ip). The Nke parameter was correlated with Bq(pore pressure parameter).