I am a civil engineer and I currently use MX Road to for all my road designs. However, after reading more about civil 3D I am looking to make the transition between MX and Civil 3D. I have watched a number of tutorials but I can't find any information on how to create a compatable ground model?
The ground models I use for MX are in GENIO.txt format but do not seem to work when I try and input in to Civil 3D. Is there an easy way to convert MX ground models to work in civil 3D? Or how can I create a new ground model from LIDAR point data?
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MX Genio files can't be imported natively to Civil 3D, but there is a subscription extension that will allow the import/export of GENIO files (although I've not had much succes with it).
If you are talking about existing ground models, then C3D can create surfaces from 3D triangles as well as several other objects. Point Cloud data can be imported but that is smomething I've never used so can't comment.
I use them a lot with civil 3D.
You need the full MX file with geometry information, and the Genio/MX extension. With the geometry associated data on alignment import, the alignment profiles are created. It can import MX points surfaces, alignments and survey data.
To change anything, or work with a surface, you have to create a civil 3D surface from that surface using breaklines, lines or 3D faces. With Alignments, you need to create the civil 3D alignment and assemblys for those to work.
On importing data from MX, all you really have are CAD lines and points, you need to start again from scratch.
To create the surface:
1. import the surface using the genio extension. (check what the lines are by clicking on a line and seeing its property, i.e a 3D face or 3D poly or just a line etc.)
2. create a surface by right clicking on surfaces
3. go to definition on the surface tree
4. try the breakline by right clicking the breakline and window the surface objects) if that doesnt work (as no objects found for example) try right clicking the drawing objects under the definition and adding some of those.
You can clean up your triangles by setting the largest triangle size under the surface properties.
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