I am a surveyor having lots of issues making my work in civil3d 2026 compatible with Microstation V8(I think) for our designers. I started at a new company and said I wanted to use Civil3d but I can't get them what they need. I am providing topo base map in 2d, 3d, survey plats and surface model. I have imported their line work using "dgnimport" and made a template base map from it. The colors aren't compatible when they get my dwg and the linetype/thicknesses are correct. I also have problems "dgnimporting" their lines from projects already started by them. Sometimes their lines just won't come in with this command (not sure if it's because they have xref's in theirs that cad doesn't like. I'm having uses plotting so that my plots look like theirs. Can someone help me? I know this is alot.
Allen Jessup CAD Manager - Designer Did you find this post helpful? Feel free to Like this post. Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
I have very little experience exporting to DGN and non of it recent. But I remember working with a seed file (.DGR). This is what I've found.
1. What is a Seed File?
A seed file (specifically for DGN files) is like a template that provides the foundational settings and attributes for a new DGN file.
Think of it as similar to a Drawing Template (DWT) in AutoCAD but specifically for DGN files.
It defines things like working units (e.g., feet, meters), coordinate systems, levels (layers), and other settings not necessarily present in a standard DWG.
2. Why Do You Need a Seed File?
Standardization:Seed files ensure consistency in DGN output by predefining project-specific settings.
Accurate Conversion:When exporting DWG data to DGN, the seed file's units, and other settings are critical for accurate translation.
Avoiding Errors:Using a properly configured seed file helps avoid issues like misaligned geometry or incorrect scaling during the export process.
3. Creating a DGN Seed File for Civil 3D Export:
A. Using MicroStation (Recommended):
Start with an Existing DGN:The easiest method is to open an existing DGN file that closely matches your desired settings.
Adjust Settings:Modify settings like working units, coordinate systems, levels, etc., to fit your project requirements.
Remove Geometry:Typically, seed files don't contain actual design geometry, so clear any existing elements.
Save As Seed File:Use "Save As" and save the file with a descriptive name (e.g., "Civil3D_Export_Seed.dgn") and in a location where you can easily access it when exporting from Civil 3D.
Consult Bentley Documentation:If you have Bentley MicroStation, their documentation can offer further guidance on creating and customizing DGN seed files.
B. Using AutoCAD/Civil 3D (If MicroStation is Unavailable):
Start with a DWG:Open a new or existing DWG file that has the settings and layers you want for your DGN.
Set Drawing Settings:Configure units, coordinate system, etc..
Create Layers:Set up the desired layers and their properties.
Save as DWG:Save the file.
Export to DGN:Export the DWG to DGN format, choosing the appropriate settings,and use the DWG you just created as your seed file.
Save As:The resulting DGN can then be used as your seed file in future exports.
Important Notes:
File Location:Choose a central location for your seed files so they can be easily accessed by everyone on your project.
Testing:Always test the export process using your new seed file to ensure the output is as expected.
DGN Settings in Civil 3D:Pay attention to the DGN Export Settings within Civil 3D, especially the conversion units.
Consult Documentation:The specific steps and dialog boxes might differ slightly depending on your version of Civil 3D and other software.
Coordinate Systems:If your project involves geographic data, make sure the seed file's coordinate system matches your Civil 3D drawings.
Remapping:If needed, you can create mapping setups to automatically translate DWG properties to their corresponding DGN equivalents during export.
DGN Versions:Choose the appropriate DGN version (e.g., V8) when exporting.
Allen Jessup CAD Manager - Designer Did you find this post helpful? Feel free to Like this post. Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.