GIS of Civil3D

[Brian F]

I have a massive HEC-RAS model I am about to start working on. All of the survey data is coming as a Civil3D format. I am trying to figure out if I want to try and build the geometry and export to HEC-RAS in either GIS using GEO-RAS, or using the tools in C3D so I dont have to go across multiple softwares. This is a canal model and there are going to be numerous splits, inline check structures, bridges, culverts, weirs and lateral structures.

My workflow plan (at the moment) is to
1.Build a surface from the survey data in civil3D, then export this as a landxml. (I like the surface building tools in c3D much better then GIS)
2. Import surface to GIS
3. Finish building the model GEORAS tools to add cutlines, structure locations, ineffective flow, roughness zones, blocked areas, ect.

I am familiar with GEO-RAS and think it works well, which is why I default to using it. I am less familiar with C3D and have never used any HEC-RAS tools developed for it.

My question is whether anyone can comment on just using c3D with HEC-RAS and skip the middle step I have for bringing it into GIS? Are the any tools for C3D (similar to GEO-RAS) for managing and developing a HEC-RAS model. If they cost money that is fine too. Any other comments for pros/cons on using either GIS versus C3D to develop a HEC-RAS model and for post-processing data?

Thanks
Brian

[Chris G.]

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Subject: Re: GIS of Civil3D
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Brian. Sounds like a good way to go. I wish I could give you more info on th=
e process but I don’t know C3D. I would caution you though, for a complex mo=
del like this, start simple, (ie no structures) and add components one at a t=
ime, checking stability along the way. That will pay dividends later=20

Chris

Sent from my iPhone

> On Feb 11, 2015, at 6:36 PM, Brian F [via HEC-RAS Help] wrote:
>=20
> I have a massive HEC-RAS model I am about to start working on. All of the s=
urvey data is coming as a Civil3D format. I am trying to figure out if I wan=
t to try and build the geometry and export to HEC-RAS in either GIS using GE=
O-RAS, or using the tools in C3D so I dont have to go across multiple softwa=
res. This is a canal model and there are going to be numerous splits, inline=
check structures, bridges, culverts, weirs and lateral structures.=20
>=20
> My workflow plan (at the moment) is to=20
> 1.Build a surface from the survey data in civil3D, then export this as a l=
andxml. (I like the surface building tools in c3D much better then GIS)=20
> 2. Import surface to GIS=20
> 3. Finish building the model GEORAS tools to add cutlines, structure loca=
tions, ineffective flow, roughness zones, blocked areas, ect.=20
>=20
> I am familiar with GEO-RAS and think it works well, which is why I default=
to using it. I am less familiar with C3D and have never used any HEC-RAS to=
ols developed for it.=20
>=20
> My question is whether anyone can comment on just using c3D with HEC-RAS a=
nd skip the middle step I have for bringing it into GIS? Are the any tools f=
or C3D (similar to GEO-RAS) for managing and developing a HEC-RAS model. If t=
hey cost money that is fine too. Any other comments for pros/cons on using e=
ither GIS versus C3D to develop a HEC-RAS model and for post-processing data=
?=20
>=20
> Thanks=20
> Brian=20
>=20
>=20
>=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/GIS-of-Civil3D-tp1297.html
> To unsubscribe from HEC-RAS Help, click here.
> NAML

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Brian. Sounds like a good way to go. I wish I could give you more info on the process but I don’t know C3D. I would caution you though, for a complex model like this, start simple, (ie no structures) and add components one at a time, checking stability along the way. That will pay dividends later 

Chris

Sent from my iPhone

On Feb 11, 2015, at 6:36 PM, Brian F [via HEC-RAS Help] <[email protected]> wrote:

I have a massive HEC-RAS model I am about to start working on. All of the survey data is coming as a Civil3D format. I am trying to figure out if I want to try and build the geometry and export to HEC-RAS in either GIS using GEO-RAS, or using the tools in C3D so I dont have to go across multiple softwares. This is a canal model and there are going to be numerous splits, inline check structures, bridges, culverts, weirs and lateral structures.

My workflow plan (at the moment) is to

1.Build a surface from the survey data in civil3D, then export this as a landxml. (I like the surface building tools in c3D much better then GIS)

2. Import surface to GIS

3. Finish building the model GEORAS tools to add cutlines,  structure locations, ineffective flow, roughness zones, blocked areas, ect.

I am familiar with GEO-RAS and think it works well, which is why I default to using it. I am less familiar with C3D and have never used any HEC-RAS tools developed for it.

My question is whether anyone can comment on just using c3D with HEC-RAS and skip the middle step I have for bringing it into GIS? Are the any tools for C3D (similar to GEO-RAS) for managing and developing a HEC-RAS model. If they cost money that is fine too. Any other comments for pros/cons on using either GIS versus C3D to develop a HEC-RAS model and for post-processing data?

Thanks

Brian

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NAML

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[Anonymous]

Thanks Chris,

Thanks for the suggestion for starting without any structures. That is a very simple and elegant way to proceed with developing and debugging the model.

Has anyone been using the new GEO HEC-RAS software? I was wondering if this might be a good tool for managing this large project. However, I am a little apprehensive to commit to using this on a large project without hearing some positive feedback. Any thoughts?

[Mateus N.]

Hello Bryan,
I was reading the other day and it seems that Autodesk has developed a new extension for AutoCAD Civil 3D, called “River & Flood Analysis”, and it promises a lot of new capabilities to help the use of Civil 3D alongside with HEC-RAS. I never tested it before and my advice would be the same as Chris’s. Either way, this River analysis extension is only included in a specific autodesk package for the Civil 3D, the “Infrastructure Design Suite 2015”. I hope that helped!

Cheers,

Mateus

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