HEC RAS Bridge Pier Geometry 1

[sming]

Hello all. I am trying to model a bridge in HEC RAS and in the pier data editor it allows me to enter pier width and elevation. Is there any way to change the shape of a pier? My piers are round not square. Is there a way to specify the shape to ensure I am entering the correct shape? Thanks!

 

[csmith1357]

In the bridge modeling approach editor of HEC-RAS, you can specify the drag coefficient (momentum eq) and/or the pier coefficient (yarnell's eq) for low flow conditions. Please refer to the following link for more discussion.

http://www.engr.udayton.edu/Civil/CEE 584/Chapter 10 - Bridge Modeling and Analysis.pdf