Hi everyone, for an infrastructure project I am modeling a tunnel and its deterioration. The goal is to create a digital twin of the gallery. My starting data are: laser scanner survey of the tunnel, historical sections, degradation mapping. At present I have reconstructed the geometry and its d…

Can you describe more the problem. Are you need to define element along the tunnel roof curve?

Hi @RMohareb , the goal is to represent the degradation as done in the attached image. the problem is that model is obtained by projecting the polylines and areas present along the Z axis. but the starting dwg, in plan view, is wider than the ring, as it represents the “stretched” ring in plan view. …

As the deterioration was mapped in two dimensions, we can only assume it was projected down onto the base plane. So projecting on the Z axis (the opposite of how it was flattened) is the solution.

why not import the point cloud into revit?

the client only provided us with the sections, unfortunately we cannot have the complete cloud

From the attached screen you can see that I projected the deterioration spots along the z axis. the problem is that in this way I cannot project all the degradation present in the dwg; in particular the one below the centerline of the ring. I do not know if I was clear

[image] Salvatore_Falcone: in particular the one below the centerline of the ring. I do not know if I was clear How do you know which is below the center line by looking at the DWG? Use that information to filter your degradation data into lists which are above the center point and those whi…

Thank you all for the support. I solved it by converting the points on the 2D dwg from Cartesian coordinates to polar coordinates. the next step will now be to convert the lines into degradation families (cracks, stains, etc.) [test2]

[image] Salvatore_Falcone: I solved it by converting the points on the 2D dwg from Cartesian coordinates to polar coordinates. Nice use of polar coordinates; I am still confused as to how you know when a point is at 170 degrees or 190 degrees about the local axis. Was that included in the dat…

@jacob.small thanks for your reply. to solve the problem of the points below the horizontal axis I modified the orientation of the coordinate system so as to make it coincide with the beginning of the ring’s circumference

Tunnel modeling and CAD projection along shell

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Tunnel modeling and CAD projection along shell

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