Importing DTM (Digital Terrain Model) to a surface model

[tim_newsome]

Can a DTM (Digital Terrain Model) be added to a surface model by adding DEM Files to a surface model?

What is the best method to add a TIN or DTM to a surface model?

[cadtag]

a civil3d surface is a TIN, or a DTM. What's the source of the data you want to add? (A DEM is s specific TIF format image file)

[Opie]

Best method? The one I find that works for me is this. Create a new TIN surface, then add DEM file to the surface. You may need to assign the correct coordinate system to the DEM when adding it to the surface.

[remi678731]

Can a DTM (Digital Terrain Model) be added to a surface model by adding DEM Files to a surface model?

What is the best method to add a TIN or DTM to a surface model?

Hi
The preferred method I have is LandXML 2nd is using the 3dfaces from the dwg used to create the contours

[tim_newsome]

a civil3d surface is a TIN, or a DTM. What's the source of the data you want to add? (A DEM is s specific TIF format image file)

New job and senior staff engineer said "imported from DEM". I am thinking she meant DTM.

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Best method? The one I find that works for me is this. Create a new TIN surface, then add DEM file to the surface. You may need to assign the correct coordinate system to the DEM when adding it to the surface.

Do DEM files typically originate from GIS or ESRI?

[cadtag]

usually when I get a DEM it comes from the Gov... resolution usually 10 meters/pixel. If it's really a DEM, the file extension should be TIF. (basically will look like a picture with shades of black/gray, Z value of the pixels is represented as a shade of gray)

Anything else try looking at in Notepad and see what's in there.

[Opie]

usually when I get a DEM it comes from the Gov... resolution usually 10 meters/pixel. If it's really a DEM, the file extension should be TIF. (basically will look like a picture with shades of black/gray, Z value of the pixels is represented as a shade of gray)

Anything else try looking at in Notepad and see what's in there.

They can also have a DEM file extension. You may also need the world file or at least the projection (.PRJ) file to help place the DEM file in C3D.