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US Army Corps of EngineersInstitute for Water Resources, Risk Management Center

Risk Calculations Suite

Concrete Lined Spillway Erosion (Slab Jacking)

Concrete Lined Spillway Erosion (Slab Jacking) event tree

NOTE

Node 1 can be expanded into several branches to account for differing gap widths and offset heights.
Nodes 5 through 7 can be expanded to account for differing amounts of passive wedge removal (Node 5), evaluation of the PFM even if scour does not progress beneath the monolith(s) (Node 6), or differing scour widths (Node 7).