AutoCAD Civil 3D

[#1]

Hi. I need to create a 3d terrain solid from dwg nivel curves (contours). I tried with loft command but the lines are too detailed and my pc takes a eternity to loft just 2 lines and i have a lot of it.

I was wondering if use revit will be a good option. Can you please tell me the best way to do it and dont create a extensive 3d file?

Regards

[#2]

Start from here, sir.

[#3]

before he can use that advice he has to first create a C3D surface from the contours.

[#4]

Are you using Civil 3D? If so, do as the previous poster suggested and create a Civil 3D surface from your contours and then follow AntonioVinci's link.