AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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Valued Contributor
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Post 1 of 12

Combining Multiple surfaces to create Final Surface - Boundary issues

1658 Views, 11 Replies
11-28-2012 01:53 PM

Hi Everyone,

 

I am creating my Final Grading surface with from 2 surfaces - a proposed road surface and a proposed grading surface.  (Note of roads within the road surface)

 

The issue is that when I paste the proposed road surface (that consists of several looped sections) over the proposed grading surface, the proposed grading surface within the looped road areas dissappears.

 

I have tried several options using boundaries for the inner looped areas on my road surface, and has altered my order of opterations for my final surface edits, and many other things also. 

 

I have attached an image for your reference.

 

Any ideas would be greatly appreciated.

 

Thanks.

 

Rob

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Post 2 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-28-2012 04:11 PM in reply to: RobR88

If the roads were created with separate corridors (and, hence, separate surfaces from them as well), you can paste each surface individually into the proposed grading surface without creating the voids. 

 

Other methods will work but are considerably more labor intensive. 

*Expert Elite*
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Post 3 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-28-2012 04:46 PM in reply to: RobR88
Have you tried pasting the road first then the grading?
Matt Kolberg
Cansel - Autodesk Division
http://www.cansel.ca/
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Registered: ‎09-05-2006
Post 4 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 07:22 AM in reply to: RobR88

Just change snapz=0 to snapz=1 and try it.  You have 3D polylines for some reason, not sure.

 

Bill

 

 

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Post 5 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 07:42 AM in reply to: castled071049

The only foolproof way I can think of is to split up either the roads or the grading surface to multiple smaller surfaces, then paste together onto the finished grade.  (Paste the big one first, then the multiple small ones.)  Either way will work: split the roads up so they don't loop, or split the grading surface up so it fits inside the loops.

 

As said earlier, this is labour intensive.


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*Pro
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Post 6 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 08:04 AM in reply to: RobR88

whatever grading or spot elevations or contours that where used to add to the grading surface, add them to the road surface instead and have one surface with no need for pasting.

 

 

Dan

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Registered: ‎02-07-2012
Post 7 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 11:49 AM in reply to: RobR88

I may be missing something, but what is the "snapz" command?  My Civil doesn't seem to recognize it?

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Post 8 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 11:50 AM in reply to: mathewk

This didn't make any difference - I tried several orders, which all had different effects, but none of which were benificial to sovling my problem.

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Post 9 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 11:52 AM in reply to: castled071049

This worked the best of the solutions thus far, but didn't entire fix the problem.  Thanks.

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Post 10 of 12

Re: Combining Multiple surfaces to create Final Surface - Boundary issues

11-29-2012 12:08 PM in reply to: RobR88

I think this is one for the wish list.

Ideally you should be able to add a hide boundary to your roads surface (possibly you already have one there) and then when you do the paste it should leave the original data in that hide location.  This is what you tried first of all, right?  And it doesn't work? Instead it is replacing data with no data, if I understand you correctly.

 

It should work as you wanted it to, I can't think of any reason why not.  What do others out there think?


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