Hello everyone, I am developing a routine to generate 3D solids based on XYZ points obtained from surfaces and alignments. I have already extracted the XYZ information, but I have not been able to convert it into a 3D solid. I rotated the geometry that I want to project (a circle), but I could not…

Within Dynamo, a pipe could be modelled using the Solid.BySweep node from the Geometry menu. Then, you can use the Solid.ByGeometry node from the AutoCAD menu to create a 3D solid object in Civil 3D. [C3D_SolidBySweep] [C3D_SolidBySweep_Geometry] [C3D_SolidBySweep_3Dsolid] C3D_SolidBySweep.dy…

Also, depending on your L.O.D., you might want the pipe to be have a void. This could be created by making a second pipe that is smaller and then using the Geometry.Trim node. [C3D_SolidBySweep_Trim] [C3D_SolidBySweep_Trim] [C3D_SolidBySweep_Trim_3Dsolid] C3D_SolidBySweep_Trim.dyn (47.8 KB)

Thank you for answering, I really appreciate it. I realized that I was using too much informartion - points - to define the geometry of the elbow instead using the fillet option. So, I simplified the information. Now I only have three points. However, I’m stuck because I’m not able to generate a …

[image] e.rincon: Could you help me with this, please? You’ll need to provide more context. Post a dataset and dyn. Otherwise we’re just guessing. Note that you can highlight a list index (i.e. click the 0 List value) and get labels applied to your geometry preview. No need to manually edit …

Sure! Thank you for the advice, too. Drawing1.dwg (989.7 KB) AUXILIARY_PIPES.dyn (119.2 KB)

Set geometry scaling to ‘medium’ and you should be all set. By using large points 0 and 1 become the same point as it removes all accuracy after the decimal point - you’re basically rounding to a full grid unit (so likely one foot or one meter depending on your units).

Please mark the solution to your original post instead of your follow-up question about polylines. A Solution to a Post is the Solution The solution to a question in any given post should be the actual solution, so that others using the thread as a resource should be able to resolve a similar prob…

Civil 3D - Sweep by 3D Poly (or points with elevation)

Civil 3D

jacob.small May 12, 2026, 9:00am 4

Alternative method using Circle.ByPlaneRadius and PlaneAtParameter:

I want to turn polyline to semi-perforated pipe

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Civil 3D - Sweep by 3D Poly (or points with elevation)

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