Problem with imported SketchUp terrain - surface too coarse

[Anonymous]

I have problems importing Sketchup terrain to Revit. I've watch a lot of tutorials but nobody addresses the spacing of the imported mesh. I export as dwg, in Revit Import CAD (I have tested all different settings) but no luck. When I create contour lines the surface still has this problem. Is there a way to make the spacing of the mesh more dense? Should this be done in sketchup, export settings?

thanks

[ToanDN]

If the source SketchUp terrain is coarse then it will export to a coarse DWG and the Revit terrain created from the DWG will be coarse.  You can edit the Topography in Revit and add points to finetune it.

[Anonymous]

Thanks for the reply! That may be true but I tried selecting a smaller area in location and exporting it thinking that it would display more dense but it is displaying only 3-4 triangels in Revit. Maybe it has to do with the map of this special area?

[Viveka_CD]

Hi @Anonymous

Since you've mentioned that you tried to import as a dwg but failed to get the results you require -

There are few known issues after you import a SketchUp file into CAD.

See supported elements and unsupported elements.

1. Exporting a SketchUp Model as a 2D CAD file
2. Exporting a SketchUp Model as a 3D CAD file

Before importing a SKP file from Trimble® SketchUp® into Revit, do the following:

• Make sure you import the geometric data needed for the Revit capability that you plan to use. See About Imported Geometry.
• Review Limitations of SketchUp Data Imported to Revit.
• Review Best Practices When Importing Masses.

Hope that helps!

[ToanDN]

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@Anonymous wrote:

Thanks for the reply! That may be true but I tried selecting a smaller area in location and exporting it thinking that it would display more dense but it is displaying only 3-4 triangels in Revit. Maybe it has to do with the map of this special area?

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Did you get the terrain in SketchUp from Google Earth?  Did you open the exported DWG and see how it looks?

[Anonymous · Accepted solution]

I think you are right. It is the map of this specific area. I did instead imported a CAD drawing with height information(from rhino), created a simple toposurface and used split surface to adjust the height. It worked fine. 

The problem I now have is making the imported roads part of the toposurface. I understand the principle (I use subregion), but selecting the lines from the drawing takes ALOT of time and is not that exact. There has to be another way that let me use what I've already drawn (in Rhino) more quickly?

[Viveka_CD]

Hi @Anonymous

Here is some information on Transferring Models - Rhino to Revit and the Rhinoceros forums are a good place for further feedback on best practices.

Regards,