I'm using a 2007 version of AutoCAD.
Someone sent me a survey they did in Civil 3D 2015 and using Trueview I dumbed it down to 2007 AutoCAD. Everything came in fine, except the contours. Those won't show up.
Does anyone know if this is as simple as exploding the contour objects in Civil 3d before he sends it to me? Would it be that simple? If not, is there another process that can be done on his end by which to make the contour objects mere polylines?
Thanks
If you're just looking for autocad objects have them "Export to Autocad" into the version you need. It takes all the civil 3d objects and converts (explodes) them down to plain objects.
> If you're just looking for autocad objects have them "Export to Autocad" into the version you need. It takes all the civil 3d objects and converts (explodes) them down to plain objects.
:good: "Export to AutoCAD" in C3d.
I'm not sure that that will do it. I know it does not work for points. You can however extract contours and tin lines from from the DTM as standard AutoCAD features from Civil 3d.
It works for contours and points for me, any civil 3D object for that matter. If you have any issues with points, restart the program, reopen and open the file and export before anything else. I don't know if it's a bug or what but I've had issues with points not exporting correctly if I've been working in the program for awhile.
I'm pretty sure if he explodes them they will become 2D polylines with the elevation of whatever the contour value is. Then you can recreate the surface from contours by selecting those polylines as the contours in the older version.
Have them export to an XML file.
Points, alignments, surface.
You can then import the XML whether you want points, surface or alignments or all.
You will then have real 3D data.
Jim in NH
> I'm pretty sure if he explodes them they will become 2D polylines with the elevation of whatever the contour value is.
Explode a C3d surface object once and get a block. Explode that block and you get contours as many, many, many short line segments. Not polylines. I suppose you could then use the JOIN command to make polys from the line segments. Or just use those line segments as data in a new surface. But...
> Then you can recreate the surface from contours by selecting those polylines as the contours in the older version.
Using contours as data for a surface always results in a smoothed surface that is a poorer representation of the ground than the original surface was. And if the contours were smoothed the new surface is, in part, a total fabrication. I'd avoid it.