Hello-
I am working in HEC-RAS to find parameters needed for a scour analysis. I am not using HEC-RAS for the complete analysis due to the equations not being updated for the fifth edition of HEC-18.
Currently, I am having an issue while finding L’ and Ae for Abutment scour or the “live” flow length/area. When I look at the hydraulic design parameters I am given a live length of 1.8′ on my right abutment and an area of 1.07′. The actual length is listed as 1.81 which is incorrect, the actual length is ~33′! I tried changing the toe stations to make more sense, however none of the other numbers update.
Any suggestions? If not, does anyone know how to get a plot of conveyance vs. distance across a cross section? If I were able to get this I could find L’.
Also, if anyone knows of any good scour tutorials it would be greatly appreciated.