Pier and Contraction Scour in Cohesive Soils (2004) / Chapter Skim
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Pages 89-92
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From page 89... ...
That plot can be used to quote a scour depth with a corresponding probability of occurrence, or better, to choose a risk level and quote the corresponding final depth of scour. 11.2 PREPARATION OF THE FUTURE HYDROGRAPHS The SRICOS-EFA Method determines the scour depth at the end of the bridge life as a progressive process driven by a given sequence of daily stream-flow values throughout the life, Lt, of the structure.
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From page 90... ...
For each hydrograph, the SRICOS program generates a scour depth history, including a final depth of scour, d, at the end of the project life. These values of the final depth of scour can be organized in a frequency distribution.
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From page 91... ...
St re am flo w (m 3 /s ) Predicted Scour Depth Vs.
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From page 92... ...
In other words, the predicted final depth of scour should be multiplied by 1.5 before it becomes a design scour depth. Flood-frequency curve based on Original Hydrograph (1931-1999)
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