Good Morning/Afternoon All I’m sure this has been requested before, however I have been unable to find anything the relates to the task I am trying to undertake. Also please excuse the naivety as I am a little new to the interoperability between Civil 3D and Revit. I am currently trying to import …

[image] "BriMohareb_XXXX" Package for RevitXXXX Thread Packages Yes, I have access to AutoCAD

Thank you for your link, I have down loaded and created a workflow. However I am now getting errors and using Revit 2026 I can see the option to create the TopoSolid. Any advice/assistance will be welcomed Import C3D Surface.dyn (41.5 KB)

can you share the image from the code. the dyn file you shared has no TopoSolid node

Morning, thank you for that is one of the issues I’m having is that I can’t find the Toposolid node or a way of selecting the family type for the toposolid. [Import C3D Surface Image 2] [Import C3D Surface Image 1]

Hi @dave.middle4ZNRV does your surface.drape.point node work if you flatten the cd3 surface before feed in ? maybe…and in R26 we should have nodes for build toposolid and its possible move and add toposolid point and we can create splitlines as well but no ootb for that… and probably create subdivid…

@sovitek Thank you for your message, however, please excuse my experience. But in respect of flattening the surface. Not sure what you mean, what node would I need to use.

yeah sure my bad :wink: list.flatten…but just a guess what the issue could be…if you show an image what the warning say it could probably help.. https://dictionary.dynamobim.com/#/BuiltIn/Action/Flatten

Hello all @sovitek & @RMohareb I have finally managed to have dynamo read the Civil 3D Surface and Create a toposolid, however I seemed to have missed a couple of important steps: Converting Points from Meters to Millimeters. I’ve seen a few post regarding this but all looking a little confusing. …

maybe @RMohareb awesome package support that as well, not sure

Simply publish the surface in Civil and link it in Revit. With version 2026, the accuracy of the linked topography geometry has been significantly improved and now reflects the triangulation of the Civil surface, which to my knowledge is not yet possible with Dynamo.

Revit CivilConnection 2025 - Open Civil Document, Get Surface Workflow

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RMohareb January 27, 2026, 9:43am 2

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Revit CivilConnection 2025 - Open Civil Document, Get Surface Workflow

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