Case Study: Wyllie & Norrish Rock Engineers optimize debris flow mitigation decisions with Lumivero PrecisionTree

Identifying Optimum Mitigation Strategies for Debris Flow Hazards with PrecisionTree

Wyllie & Norrish Rock Engineers, a specialist geotechnical firm, needed to determine the most effective mitigation strategy for a site at risk from debris flows. They used Lumivero's PrecisionTree software to model the frequency and magnitude of potential debris flows and to compare the costs of various protection measures, including constructing a containment dam or relocating residences.

Using Lumivero's PrecisionTree, the firm created a probabilistic decision tree to analyze all possible scenarios, their likelihoods, and associated costs. The analysis clearly identified that constructing a containment dam was the most cost-effective solution, with a total expected cost of $200,150, significantly lower than the alternatives. This allowed Wyllie & Norrish to quantitatively determine the optimum strategy and effectively communicate the clear risk and cost rationale to their clients.

Wyllie & Norrish Rock Engineers

Duncan Wyllie

Principal