saving Civil 3D drawing into the dxf file

[amirfarshadfar]

Dear

I have a question. How could I just select the “Kriging” surface and convert it into a dxf file?

I deleted all other parts of my drawing and selected the “kriging” surface and save it as a dxf file, but something seems is wrong, because I could not open the saved dxf Civil 3D file in the Rhinoceros and Plaxis software and when I import them, the software does not show me any drawing and maybe it needs some more adjustments and preparation during creating the dxf file in the Civil 3D software.

What should I do to  create a very good dxf file from the “kriging” surface to be able to be imported into the Rhinoceros and Plaxis software? Should I do more adjustment for that in the Civil 3D software?

Thanks for your response

I look forward to hearing from you

Sincerely

Amir Farshadfar

[LucasHicks]

Can they use xml format.  That is the best way to transfer surfaces from one program to another.

[Neilw_05]

DXF does not support C3D objects such as surfaces, alignments, featurelines, etc. Your best option would be to export to landxml which was mentioned. That would give an exact replica of the surface in the other software. If that is not an option, then you will have to recreate the surface using plain Autocad objects such as 3D triangles, points, contours and 3D breaklines. To do this, set your surface style to display its points, contours, boundary and triangles. First write its breaklines into the drawing, since they wont be available after you explode it. Then explode it down to plain Autocad objects. It will be a block when you first explode it, so you will have to explode it again.. You can then write the pieces out to dxf and recreate the surface in your other software.

You can probably get good results by just using the triangles, but it would be good to have the other objects if needed.

[Cadguru42]

Make the style of the surface show only what you need in Rhino, such as the mesh (triangles), points, breaklines, and/or contours. I don't know what Rhino needs to create a mesh, but most likely you only need the triangles. Then do an ExportC3DDrawing which will remove the C3D object header and convert the C3D objects (as the style currently shows it) to plain ACAD objects that can be read by other programs.