Buried Pipeline Soil Spring Stiffness Calculator

Pipeline Geotechnics & Seismic Engineering: Calculate non-linear soil spring resistances ($T_u, P_u, Q_u, Q_d$) and yield displacements ($x_d, y_d, z_u$) per American Lifelines Alliance guidelines.

Pipeline & Soil Embedment Parameters

Pipe Outer Diameter $D$ (mm):

Centerline Depth $H$ (m):

Surrounding Soil Classification:

Pipe Coating Factor $f$: FBE/Epoxy: ~0.8; PE: ~0.7; Bare: 1.0

At-Rest Lateral $K_0$:

Four-Directional Soil Spring Resistances

Axial Soil ($T_u$)

-- kN/m

Lateral Soil ($P_u$)

-- kN/m

Vertical Uplift ($Q_u$)

-- kN/m

Bearing ($Q_d$)

-- kN/m

Axial Yield Displacement $x_d$: -- mm | Lateral $y_d$: -- mm

Uplift Yield $z_u$: -- mm | Bearing Yield $z_d$: -- mm

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Buried Pipeline Soil Spring Stiffness Calculator

Pipeline & Soil Embedment Parameters

Four-Directional Soil Spring Resistances

Frequently Asked Questions