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Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator

Easily calculate and compute skempton pore water pressure coefficients (a & b parameters) calculator with accurate equations, live formulas, and expert guidance.

Standard triaxial saturation check.

Calculated Result
0.57 A index

Skempton A Parameter

Skempton A Parameter

0.57 A index

Skempton A Parameter

0.57

Skempton B Parameter

0.99

Total Pore Pressure Response Delta U Kpa

184

Triaxial Saturation Check

FULLY SATURATED (B >= 0.95 confirms complete pore water saturation)

0.57 — A index

Calculation Breakdown

  1. Applied FormulaEvaluates triaxial soil test pore water pressure response during undrained shear loading using Alec Skempton’s 1954 pore pressure coefficients $A$ and $B$.\Delta u = B \left[ \Delta\sigma_3 + A (\Delta\sigma_1 - \Delta\sigma_3) \right]

Skempton A & B Parameters Metric Output

Interactive visualization based on your current inputs

Calculated Value
0.00.30.50.81.0Skempton A Parameter

What Is the Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator?

This tool computes skempton pore water pressure coefficients (a & b parameters) calculator with high precision arithmetic.

How Does the Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator Work?

Evaluates triaxial soil test pore water pressure response during undrained shear loading using Alec Skempton’s 1954 pore pressure coefficients AA and BB.

Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator Formula & Variables

The core mathematical equation utilized by this calculator is expressed as:

Δu=B[Δσ3+A(Δσ1−Δσ3)]\Delta u = B \left[ \Delta\sigma_3 + A (\Delta\sigma_1 - \Delta\sigma_3) \right]

Evaluates triaxial soil test pore water pressure response during undrained shear loading using Alec Skempton’s 1954 pore pressure coefficients AA and BB.

How to Use the Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator

  1. Enter your parameters into the designated input fields to calculate the result immediately.

Step-by-Step Example Calculation

Skempton Pore Water Pressure Coefficients (A & B Parameters) Calculator Example

Input Values:

confiningCellPressureIncreaseDeltaSigma3Kpa:100
porePressureChangeFromConfiningDeltaU3Kpa:99
deviatorStressIncreaseDeltaSigma1Minus3Kpa:150
porePressureChangeFromShearDeltaUdKpa:85
Worked Steps: Sample evaluation based on standard reference conditions.

Understanding Your Result

The calculated primary figure indicates the optimal or required A index.

Factors That Affect the Result

  • Measurement tolerances, operational variance, and real-world conditions.

When Should You Use This Calculator?

  • Everyday budgeting, technical homework, professional estimation, and household projects.

Assumptions & Limitations

  • Assumes standard atmospheric or environmental parameters unless specified.

Frequently Asked Questions

Calculation Accuracy & Reference Note

Double-precision IEEE 754 arithmetic with validated empirical constants.

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