D95/D90 for Scour at piers - Kleinschmidt

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March 25, 2014 at 6:26 pm #5478

Rick J
Participant

The Hydraulic Design Function calls for entering a D95 for pier scour but when you print out the report it lists the value as D90? any reason why?

March 27, 2014 at 8:49 pm #8756

Chris G.
Keymaster

I believe the particle size for the CSU pier scour equation is D95. Regardless of how it is labeled in the HEC-RAS GUI (D95), or the report (D90), the value you enter into that input box is what is used directly by RAS for the CSU pier scour equation.
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