Settlement & Consolidation

Terzaghi 1D Consolidation Rate & Isochrones

Bidirectional solver for time factor (Tv) vs degree of consolidation (U%) and Fourier series excess pore pressure dissipation profiles for single/double drainage.

Terzaghi 1943

Inputs

Demo

1. Mode & Clay Layer Drainage Properties

Solve Objective

Drainage Boundary Condition

Max Drainage Path Distance Hdr (m)

Coefficient of Consolidation Cv (m²/yr)

Target Average Degree of Consolidation U (%)

Results

Enter clay stratum drainage distance (Hdr) and Cv above, or click a Demo Preset at the top to compute Terzaghi time rate.

Theory and formulae

Terzaghi 1D Time Rate Formulation

About this calculator

This free terzaghi time rate calculator runs entirely in your browser: what you enter is never uploaded. Switch between metric and imperial units at any time. Use the calculation steps and the theory section to check the working, and print a calculation sheet with the inputs, results and formulae for your records.

Methods and references: Terzaghi 1943.

Topics: terzaghi, time rate, degree of consolidation, isochrones, fourier series, pore pressure dissipation.

Engineering notice: Results are for preliminary estimation, screening and education. All inputs and outputs must be independently verified by a qualified professional engineer before use in any design or construction decision. Read the full disclaimer