In this two part post on using the Massing & Site tools will cover the basics of creating a toposurface from a simple Civil 3D surface drawing file. With the 3D contours at elevation the drawing file when imported into your Revit model can be converted into a toposurface. The process is simple but understanding the steps and what you are importing is the key to being successful. Best practices are absolutely essential to creating a usable surface in your BIM model.
Following these simple practices will ensure your civil files are exactly what you need and will not break your projects.
- The civil CAD file needs to be in the following formats to work. (DWG, DXF, DGN)
- The civil points file needs to be in the following formats - (NEZ - Northing, Easting, Elevation)
- Import the CAD file into a basic template to test its usability and review stability / file size.
- Remove the CAD file after converting into a toposurface.
- Clean up the project prior to linking into your working models.
Part 1 - Creating a Toposurface from a simple civil 3D CAD file.