Mesh to Civil 3d

Mesh to Civil 3d

Anonymous
Not applicable
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10 Replies
Message 1 of 11

Mesh to Civil 3d

Anonymous
Not applicable

Hello, everyone! I need some help, how can i import my mesh which is in .obj file to my Civil 3D. I tried to converted and import with .3ds and .dxf, but with no success. At the screenshot you can see my mesh in Meshlab

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6,198 Views
10 Replies
Replies (10)
Message 2 of 11

Todd_Rogers
Mentor
Mentor

Do you have 3ds Max? You can import .obj, then export it to FBX, then import the FBX into Civil 3D.

Todd Rogers
Civil Administration
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Message 3 of 11

Anonymous
Not applicable

No ;(

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Message 4 of 11

DarrenP
Consultant
Consultant

what are you trying to do with it in Civil 3D?

do you have access to any other Autodesk products?

DarrenP
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Message 5 of 11

Anonymous
Not applicable

I'm trying to generate tin surface from 3d faces

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Message 6 of 11

neilyj666
Mentor
Mentor
Looking at your screenshot you may have difficulty using the 3d faces in Civil. You will need to ensure that there are no overlaps where triangles are coincident in plan but have different z values.

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2026 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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Message 7 of 11

TerryDotson
Mentor
Mentor

If the mesh is as shown in your image attachment, it's not a candidate for a TinSurface anyway!  TinSurfaces are open triangle meshes where no planes live on top of another,  and no XY has multiple Z's.

 

You should post your .OBJ mesh file so someone may be able to import it as a CAD mesh and possibly convert it to a 3dSolid for you.

 

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Message 8 of 11

neilyj666
Mentor
Mentor
Be sure not to confuse TIN Surfaces with vanilla CAD surfaces - they are totally different

neilyj (No connection with Autodesk other than using the products in the real world)
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AEC Collection 2026 UKIE (mainly Civil 3D UKIE and IW)
Win 11 Pro x64, 1Tb Primary SSD, 1Tb Secondary SSD
64Gb RAM Intel(R) Xeon(R) W-11855M CPU @ 3.2GHz
NVIDIA RTX A5000 16Gb, Dual 27" Monitor, Dell Inspiron 7760
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Message 9 of 11

jeremy.jaeger7L5J8
Explorer
Explorer

Currently looking for a resolution to this post. If we receive a 3D mesh assortment of files (.fbx, .obj, .ply, .mtl) what is the work flow to generate 3D faces in C3D and create a TIN surface from it? I have access to multiple autodesk products.

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Message 10 of 11

andrewofabley
Advocate
Advocate

@jeremy.jaeger7L5J8 

Is there a .DWG export option in 3DS Max?

 

 

This would seem like the most intuitive way.

I can't remember ever using this myself, mind you.

AEC Collection / Safe FME / ESRI ArcGIS / Unreal Engine
Digital Engineering Lead, Compulsive Problem Solver.
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Message 11 of 11

Matheus-Lima
Advisor
Advisor

Yes, there is! Just posting here to contribute on the topic: https://knowledge.autodesk.com/support/3ds-max/learn-explore/caas/CloudHelp/cloudhelp/2021/ENU/3DSMa...

 

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[EN-US] If it was helpful to you, click on Like! If the answer solved your problem, click on Accept Solution.

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Matheus Lima
Civil Engineer | BIM for Infrastructure Enthusiast | BIM Manager | Instagram @bim_infra | LinkedIn
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