On the reliability assessment of a controlled dyke failure

A reliability-based analysis framework, accounting for uncertainty arising from the spatial variability of soil properties, has been validated controlled, well-instrumented slope failure an historic dyke in Netherlands. Using property statistics derived results laboratory and cone penetration test (CPT) data different layers at site, was analysed initial (i.e. operating) conditions, as well later stage leading up to failure. The computed probabilities back-figured factors safety were consistent with point which occurred test, range possible mechanisms. stability assessment reduced by considering nature variability, conditioning analyses CPT measurement data. It is shown that approach enables more informed assessments could make difference between a being assessed safe or requiring costly improvement.