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sci.consolidation-settlement-Terzaghi Calculator
Calculates primary consolidation settlement and time using Terzaghi's one-dimensional consolidation theory: U(t) = f(T_v), where T_v = c_v t/H². Time to 90% consolidation: T_v = 0.848 — soft clay with c_v = 10⁻⁸ m²/s and H = 5 m drains takes 42 years for 90% consolidation.
Inputs
H Clay M
Perpendicular measurement through the material. For insulation: thicker is better. For beams: directly affects bending resistance.
Cc
Reference formula or conversion factor shown for context.
Cs
Reference formula or conversion factor shown for context.
E0
Reference formula or conversion factor shown for context.
Sigma0 Kpa
Internal force per unit area (Pa or MPa). Must stay below yield strength in service.
Dsigma Kpa
Internal force per unit area (Pa or MPa). Must stay below yield strength in service.
Results
primary consolidation settlement Sc (m)
The value at the specified point or condition.
settlement (mm)
Sample size or count used in the calculation.
swelling/recompression index Cs reference
The computed compression ratio or compressive force. Higher compression ratios store more energy but increase heat and pressure.
Sc = H/(1+e₀)·Cc·log(σf/σ₀)
Reference formula or conversion factor shown for context.
void ratio change
The proportional relationship between two quantities.
stress ratio σf/σ₀
Internal force per unit area (Pa or MPa). Must stay below yield strength in service. Beyond yield: permanent deformation. Beyond tensile strength: fracture.