Case Studies#

End-to-end worked examples on realistic engineering problems, authored and validated by the Deltares team. Each case study demonstrates a complete probabilistic workflow: from problem definition and uncertainty characterisation to reliability results and interpretation.

These examples are more detailed than the tutorials. They use realistic model parameters, discuss engineering context, and show how to interpret results in a professional setting.


Geotechnical

Reliability of a Retaining Wall

Assess the probability of failure of a gravity-based retaining wall under uncertain soil parameters. Combines FORM analysis with Monte Carlo.

FORM Reliability Geotechnical
■□□ Beginner
Connect D-Stability model (GEOLIB)

How to connect D-Stability to a probabilistic workflow using the GEOLIB Python library. Demonstrates the effect of load variability and correlated soil parameters.

D-Stability Stochastic loads Slope stability Geotechnical
■□□ Beginner
Connect D-Settlement model (GEOLIB)

Probabilistic settlement analysis by coupling D-Settlement to the probabilistic engine via a Python wrapper. Propagate soil parameter uncertainty through a full settlement model.

D-Settlement External model Uncertainty propagation
■□□ Beginner
Connect D-SheetPiling model (GEOLIB) — FORM analysis

Connects a D-SheetPiling cantilever sheet pile model via the D-GEOLib Python library. Wraps the model as a limit state function and runs a FORM analysis with three stochastic soil and hydraulic parameters.

D-SheetPiling D-GEOLib External model
■□□ Beginner
Fragility Curve for a Sheet Pile Wall — Corrosion. Time dependent reliability analysis.

Builds a fragility curve for a D-SheetPiling wall as a function of a corrosion rate parameter. Integration of time-dependent reliability methods to show how failure probability evolves over the structure’s lifetime.

D-SheetPiling Fragility curves Corrosion Time-dependent reliability
■■□ Intermediate
Connect D-Stability model(PTK Wheel)

Slope stability reliability analysis driven by D-Stability. Uses the PTK Python wheel integration to evaluate the limit state function, enabling FORM and Monte Carlo runs directly against the D-Stability engine.

D-Stability PTK wheel FORM
■□□ Intermediate

Flood Defences

Dike Safety Assessment (Overtopping + Piping)

Full assessment of a primary flood defence against two failure mechanisms: wave overtopping and internal erosion (piping). Shows how to combine failure probabilities into a system result aligned with the Dutch WBI assessment framework.

System reliability FORM WBI
■□□ Beginner
Fragility Curve for a Storm Surge Barrier

Compute a fragility curve for a hydraulic structure as a function of water level, accounting for uncertainty in structural resistance and load parameters.

Fragility curves Uncertainty analysis Hydraulics
■□□ Beginner

Note

Examples marked coming soon are planned for upcoming releases. Want to suggest a case study or contribute one? Open a discussion on GitHub.