Multiple Alternatives on One Plot

[Anonymous]

Hello.

This may be a very silly question, but I am a self-taught user and the only user in my office, so I am slowly discovering better ways to use HEC-RAS.

I have been modeling several alternatives and have what I would consider a good working knowledge of HEC-RAS. When I have an issue, I am often able to create a work-around of some kind.

I have seen cross-section plots showing the current conditions and the alternatives on one plot. However, I have been copying my current condition and creating a new project file altogether to run my alternatives. Is there a way I could get this cross-sectional information into one project file from the current situation I’m in?

Thanks!

[sktse]

If I’m understanding your question right, you’re exploring either alternatives in the geometry of your model (i.e. the effect of construction on the model), or alternatives in flow scenarios.

The way that HEC-RAS is structured allows both of these possibilities to be explored within a single project file.

A project file consists of geometries, flow scenarios, and plans (among other things).

A geometry file (*.g01, *.g02, etc.) will describe the physical features in your model, such as hydraulic structures and the channels in your model.

A steady/unsteady flow file (*.f01, *.f02, or *.u01, *.u02, etc.) describe the different flow scenarios (1:10 year return period, PMF scenarios, etc.).

A plan file (*.p01, *.p02) pairs a geometry file with a flow file to create the model that you want. So for example:

MyProject.p01 might consist of a pre-construction geometry (MyProject.g01) with a 1:60 year return period (MyProject.f01)

To see how construction might affect this, you would create a post-construction geometry file (MyProject.g02), and run it through your original 60-year flow file (MyProject.f01). You can save this to a new plan (MyProject.p02). That way, you can refer to both your original plan (p01) and your new plan (p02) without having to load an entirely new project file each time.

Organizing your alternatives along plans this way allows you to cross-section information that compares the two on a single plot (by going up to Menu Bar > Options > Plans… and checking off the appropriate plans).

If you are saving your geometries in separate projects, that’s okay — the HEC-RAS geometric data editor allows you to import HEC-RAS geometry files (*.g01, *.g02, etc.) into your project (by going to the Menu Bar > File > Import Geometry Data > HEC-RAS Format…)

At least that’s how I understand it. I hope that this helps you out.

Shawn

[Anonymous]

Yes! Thank you. That is exactly what I am aiming to do. I figured there was a way to do it all in one project file. Thanks again for laying it all out for me.

[Chris G.]

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Subject: Re: Multiple Alternatives on One Plot
References: <[email protected]>
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You can import the RAS files from your other project. File…Import HEC-RAS D=
ata…

Sent from my iPhone

> On Aug 5, 2015, at 12:02, Julie [via HEC-RAS Help] wrote:
>=20
> Hello.=20
>=20
> This may be a very silly question, but I am a self-taught user and the onl=
y user in my office, so I am slowly discovering better ways to use HEC-RAS.=20=

>=20
> I have been modeling several alternatives and have what I would consider a=
good working knowledge of HEC-RAS. When I have an issue, I am often able to=
create a work-around of some kind.=20
>=20
> I have seen cross-section plots showing the current conditions and the alt=
ernatives on one plot. However, I have been copying my current condition and=
creating a new project file altogether to run my alternatives. Is there a w=
ay I could get this cross-sectional information into one project file from t=
he current situation I’m in?=20
>=20
> Thanks!=20
>=20
> If you reply to this email, your message will be added to the discussion b=
elow:
> http://hec-ras-help.1091112.n5.nabble.com/Multiple-Alternatives-on-One-Plo=
t-tp1890.html
> To unsubscribe from HEC-RAS Help, click here.
> NAML

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You can import the RAS files from your other project. File…Import HEC-RAS Data…

Sent from my iPhone

On Aug 5, 2015, at 12:02, Julie [via HEC-RAS Help] <[email protected]> wrote:

Hello.

This may be a very silly question, but I am a self-taught user and the only user in my office, so I am slowly discovering better ways to use HEC-RAS.

I have been modeling several alternatives and have what I would consider a good working knowledge of HEC-RAS. When I have an issue, I am often able to create a work-around of some kind.

I have seen cross-section plots showing the current conditions and the alternatives on one plot. However, I have been copying my current condition and creating a new project file altogether to run my alternatives. Is there a way I could get this cross-sectional information into one project file from the current situation I’m in?

Thanks!

---

If you reply to this email, your message will be added to the discussion below:

http://hec-ras-help.1091112.n5.nabble.com/Multiple-Alternatives-on-One-Plot-tp1890.html

To unsubscribe from HEC-RAS Help, click here.
NAML

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