topic Re: Creating a Profile view (long-section) without a surface. in Civil 3D Forum

Creating a Profile view (long-section) without a surface.

caleb.shawKTJBU — Wed, 27 Mar 2024 09:19:12 GMT

Morning all,

We've been asked by a client to create a long section of a new road alignment which is being constructed, however the client lacks any point cloud data for the area thus we can't make a surface.

Is there any other way I can produce a long section without having the surface or is this something which isn't possible?

I've attached a copy of the file so you can see what I'm working with.

Thanks,

Re: Creating a Profile view (long-section) without a surface.

wol000 — Wed, 27 Mar 2024 09:30:02 GMT

You could just make up a surface plane, nominating levels and use that as existing. You could try extracting the points from google earth, there is a process for it, if you google it or if you have infraworks, you could use model builder and extract the contours for the area and put them into civil3d

Re: Creating a Profile view (long-section) without a surface.

AllenJessup — Wed, 27 Mar 2024 15:00:31 GMT

Well. Not sure about this drawing. What I see is that a majority of the drawing is composed of 3D lines. You can make a Surface out of some or all of those. Z values run from about 20 at the west end an 40 at the east end. Does that make sense for this site?

I see the drawing wasn't produced in an Autodesk product. So I have no idea if the elevations are correct or an artifact of the original software product being brought into Civil 3D.

Let us know if any of this makes sense.

Re: Creating a Profile view (long-section) without a surface.

brian.strandberg — Wed, 27 Mar 2024 15:17:42 GMT

If you have the elevations, you can create the profile manually. You need to have an alignment and profile view created.

Then go to the profile creation tools, and you have a couple of options.

Option 1 is the Create Profile Tabular option. In this case you can enter Station / Elevation Pairs for each of the PI's.

Option 2 is the Create Profile from File. Its the same basic thing, only you are importing your Station / Elevation pairs from an external file. Here is the help file for that: Autodesk Civil 3D Help | To Create a Profile From a Profile File | Autodesk

Re: Creating a Profile view (long-section) without a surface.

caleb.shawKTJBU — Thu, 28 Mar 2024 08:38:38 GMT

Allen, sorry for my delayed response, I'm glad its not only me who is slightly confused about this. I will have a go at making the surface using the 3D lines, If i was to hazard a guess I would say that the native software which the drawing has come from is a Bentley software...

Re: Creating a Profile view (long-section) without a surface.

caleb.shawKTJBU — Thu, 28 Mar 2024 08:49:19 GMT

I'll give this a go, thanks!