Jump to content

Site Model and Grade Limits -- Grade limit / Define by contours keeps crashing

Recommended Posts

I too have avoided the built in contour edit methods.  I use the grade tool, pads, grade limits because you visually see a direct relationship between the objects representing your intentions and the results in the site model updates.  If a civil engineer shares contour lines from their scope of work, we will add those to our file and convert to contours to assign a z elevation which also works fine.  The trick to any of these is adding a grade limits line so the grading instructions are not carried out across the entire model in a strange way.  Using these ways also lets you have multiple versions of grading concepts on different design layers in the same model and then you can pick can and choose which design layers the site model listens to.

  • Like 2
Link to comment
  • Vectorworks, Inc Employee

Yes, I've worked with it quite a lot and I haven't had any issues with it.  It's good for situations between other modifiers where you want to be able to fine-tune contours. Below is a simple example where I have adjusted the contours between the two pads - instead of having them perpendicular to the pad edges, I've added a slight bow to get a more rounded, softer form.

Of course, there are many other ways to achieve this, but this is a good way for those awkward areas around other modifiers.

If you have a file crashing, can you either post it here or send it to me directly so we can see what's happening. It should definitely not do that.

Screenshot 2023-05-26 at 15.45.49.png

  • Like 2
Link to comment
On 5/23/2023 at 5:43 PM, twk said:

Has anyone successfully used 'define by contours' for the new grade limits modifier?

I have tried in fresh files and old files and vectorworks keeps crashing.

Attached example


SiteModelGradingTest.vwx 2.58 MB · 6 downloads


Ah, I misunderstood what you were talking about and just tried that on your file.

I'm actually excited by this feature as I often want to adjust the placement of contours.


I was able to edit the contours with this new workflow using your example file without issue.


I increased the size of your grade limit and straightened up some contours



Switched your model to proposed, turned off smoothed contours and updated the site model.




No problemo.

  • Like 1
Link to comment

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Reply to this topic...

×   Pasted as rich text.   Restore formatting

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

  • Create New...