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Combining Multiple surfaces to create Final Surface - Boundary issues

11 REPLIES 11
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Message 1 of 12
Nikki101
3696 Views, 11 Replies

Combining Multiple surfaces to create Final Surface - Boundary issues

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

11 REPLIES 11
Message 2 of 12
castled071049
in reply to: Nikki101

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. 

Message 3 of 12
mathewkol
in reply to: Nikki101

Have you tried pasting the road first then the grading?
Matt Kolberg
SolidCAD Professional Services
http://www.solidcad.ca /
Message 4 of 12
wfberry
in reply to: Nikki101

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

 

Bill

 

 

Message 5 of 12
troma
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.


Mark Green

Working on Civil 3D in Canada

Message 6 of 12
dgordon
in reply to: Nikki101

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

Civil 3D 2013
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Message 7 of 12
Nikki101
in reply to: Nikki101

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

Message 8 of 12
Nikki101
in reply to: mathewkol

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.

Message 9 of 12
Nikki101
in reply to: castled071049

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

Message 10 of 12
troma
in reply to: Nikki101

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?


Mark Green

Working on Civil 3D in Canada

Message 11 of 12
C3D_TomR
in reply to: Nikki101

Creat another surface "Void-1". Paste the non-roadway surface into it. Add a boundary that matches the void area inside the roadway. Paste the three surfaces into your combined surface in this order: "Non-roadway surface", "roadway surface", "Void-1 surface".

Tom Richardson


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Message 12 of 12
neilyj666
in reply to: Nikki101

this is the approach I'd take although just check that the triangles form correctly at all common boundaries. They usually do but occasionally you might have a gap which can be closed by adding a show boundary.

neilyj (No connection with Autodesk other than using the products in the real world)
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