How to model channel on HEC-RAS with different surface material? 1

[DrainageEnthusiast]

Hello everyone, I have 3 questions and I'll greatly appreciate if you can help me out on this:

1. I would like know if you can create a channel model with different surface material on HEC-RAS software?
I have attached an image showing a section of the channel with a steel sheet pile on one side and a gravel bed.

2. What shall I do in order for the manning's coefficient be a factor in the model?

3. Do the manning's coefficient of the surface material in contact with the water flow affect the HEC-RAS MODEL? If it does, in what way? Is it the velocity? or the water depth of the HEC-RAS model output as shown on the profile?

Thanks

 

[gbam]

Its pretty straight forward. Under Cross Section Data/Options/Horizontal Variation in n...

 

[DrainageEnthusiast]

@gbam

Thank you for your response.
Yes, it's pretty straight forward, I got it, thank you very much.