CPT Analysis Results

CPT input data can be used in a variety of ways:

• interpretation of soil parameters
• determination of soil profile for non-horizontal soil layers
• liquefaction analysis

For details on how to view and customize the CPT interpretation results, see the following help topics:

• CPT Results Display
• CPT Chart Controls
• Viewing Multiple CPTs

CPT Interpretation

The input data for CPT Interpretation is:

• Cone Resistance, q_c
• Sleeve Resistance, f_s
• Pore Pressure, u₂

The CPT Interpretation results are available in both graphical and tabular format. The following parameters are calculated:

• Friction Ratio
• Corrected Cone Resistance
• Equilibrium Pore Pressure
• Gamma
• Effective Overburden Stress
• Total Overburden Stress
• Stress Normalized Cone Resistance
• Stress Normalized Friction Ratio
• Shear Wave Velocity
• Normalized Qt
• Hydraulic Conductivity
• Lateral Stress Coefficient
• Soil Sensitivity
• Constrained Modulus
• Relative Density
• Young's Modulus
• Maximum Shear Modulus
• Undrained Shear Strength
• Fines Content
• Overconsolidation Ratio
• Stress Exponent
• Normalized Pore Pressure
• Soil Type Index
• Normalized Excess Penetration Pore Pressure
• Equivalent SPT N60
• Robertson 1986 SBT
• Robertson 1990 SBT
• Schneider 2008
• Secondary compression Index (Cae) - Tonni and Simonini (2013)