topic Re: Creating a Surface Based on Topographic Data in Civil 3D Forum

Creating a Surface Based on Topographic Data

heather9UNHT — Thu, 17 Jul 2025 13:20:57 GMT

I am trying to create a surface based on topographic survey data. I created a polyline as a boundary for the area I want to focus on. When I try to create the surface I keep getting this error. I was trying to create it based on the boundary line I made. Any suggestions?

Re: Creating a Surface Based on Topographic Data

Pointdump — Thu, 17 Jul 2025 13:44:14 GMT

Hi Heather,
Welcome to the Autodesk Forums.
Hard to say without seeing your drawing and data. Can you post your drawing and the survey data?
Dave

Re: Creating a Surface Based on Topographic Data

heather9UNHT — Thu, 17 Jul 2025 14:16:45 GMT

Re: Creating a Surface Based on Topographic Data

Wojty1 — Thu, 17 Jul 2025 17:14:17 GMT

Hi Heather,

the screenshots you provided are not sufficient to tell what could cause the error(s).

Could you save and upload a Log File of the errors as shown below. This may help narrowing down the causes.

Then could you also post a screenshot of your Surface Definition (on the Surface Properties Dialog Box, see below).

Without further details it will be difficult to find the cause.

Re: Creating a Surface Based on Topographic Data

heather9UNHT — Thu, 17 Jul 2025 17:45:52 GMT

When I try to develop a table from the arrow nothing show up!

Re: Creating a Surface Based on Topographic Data

heather9UNHT — Thu, 17 Jul 2025 17:46:39 GMT

Re: Creating a Surface Based on Topographic Data

Pointdump — Thu, 17 Jul 2025 18:05:13 GMT

Hi Heather,
Can you post your drawing(.dwg file) and the survey data(points? contours? dtm?)?
Dave

Re: Creating a Surface Based on Topographic Data

ChicagoLooper — Fri, 18 Jul 2025 14:58:53 GMT

@heather9UNHT

Would it be possible to click on a contour line, then with the contour still selected, take a screenshot of the Properties Palette? This screenshot will be a good start because it'll reveal info about the selected objected, e.g. TINN, 3D polyline, block, etc., etc.

The screenshots you've uploaded so far don't provide enough information. You can also use the view cube to get a 'Front' view (not orthographic). Upload a screenshot of the straight on Front View.