The Fragility Curve Plugin allows the user to define fragility curves and randomly sample failure elevations for use in a HEC-WAT Flood Risk Analysis (FRA) compute. A fragility curve represents the probability of failure over a range of elevation values for a specific structure. The elevation of failure that is sampled becomes an output data location that can be linked by any other application in the program order, such as HEC-RAS and HEC-ResSim. Fragility curves can be resampled for every event, once a lifecycle, or once every realization. Curves can be defined to also sample a loading duration, and include multiple failure modes for each structure.
Fragility Curves
A fragility curve could be used by a dam or a levee depending on the consuming product. HEC-RAS can use the output of the fragility curve at inline structures (usually dams) or lateral structures (usually levees).
