Terrain and project units

[RasL DazL]

If my terrain is in meters, is it possible to use US Customary units for the project? or does the terrain z data need to be converted to feet before terrain creation?

Thanks,
Chris

[markwood]

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From: “Markwood, David”
To: “RasL DazL [via HEC-RAS Help]”
Subject: RE: Terrain and project units
Thread-Topic: Terrain and project units
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Chris,
The terrain model needs to have the spatial projection defined to, or needs=
to be projected to, the RAS project spatial projection.
Doing so will not affect the values of the terrain raster cells (i.e. the e=
levations), so these will remain in meters.
If US Customary units are desired throughout the RAS project, the elevation=
s/values of the terrain raster with metric elevations should be converted t=
o feet.

From: RasL DazL [via HEC-RAS Help] [mailto:[email protected]=
le.com]
Sent: Friday, September 02, 2016 4:51 PM
To: Markwood, David
Subject: Terrain and project units

If my terrain is in meters, is it possible to use US Customary units for th=
e project? or does the terrain z data need to be converted to feet before t=
errain creation?

Thanks,
Chris
________________________________
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Chris,

The terrain model needs to have the spatia=
l projection defined to, or needs to be projected to, the RAS project spati=
al projection.

Doing so will not affect the values of the=
terrain raster cells (i.e. the elevations), so these will remain in meters=
.

If US Customary units are desired througho=
ut the RAS project, the elevations/values of the terrain raster with metric=
elevations should be converted to feet.

 

From: RasL Daz=
L [via HEC-RAS Help] [mailto:ml-node+[email protected]]

Sent: Friday, September 02, 2016 4:51 PM
To: Markwood, David
Subject: Terrain and project units

 

If my terrain is in m=
eters, is it possible to use US Customary units for the project? or does th=
e terrain z data need to be converted to feet before terrain creation?

Thanks,
Chris

---

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[Anonymous]

Can we convert or project the terrain (elevation in meters) to a new one with elevation in feet in HEC-RAS 5.03? without using external GIS software?

[cameron]

in 5.0.4 you will be able to do so.

[Author]

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