Forums >> Revit Structure >> Technical Support >> Subregions cannot intersect. - BUT THEY DON'T!

danezeq

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Joined: Fri, Apr 5, 2013
78 Posts

https://www.youtube.com/watch?v=RtEKyfbd_2w

Hello everyone.

I'am trying to edit boundry of subregion on a toposurface.

When i finish revit gives me a message that Subregions cannot intersect. - i click on "show" and can see that the other subregion which cliamed to be intersected is not intersecting, and is located very far from the area i edited.

Is this just an unbelivable bug or mine mistake?

video attached:https://www.youtube.com/watch?v=RtEKyfbd_2w

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WWHub

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Joined: Tue, May 16, 2006
13079 Posts

If you have any common edges with a sub region, edit that sub region and copy to clipboard the common line(s).  Cancel the edit and paste these lines into your new sketch.

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danezeq

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Joined: Fri, Apr 5, 2013
78 Posts

Thats exactly what i am doing, every time.

In this case, i'm editing in an area which is far away from the Subregion cliamed to be intersected. meaning there is NOTHING with that other subregion. i mean, there is a common edge. but it's far away from the area i'am working on. it's a bug right?

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WWHub

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Joined: Tue, May 16, 2006
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I still don't know enough to say it's a bug.

Revit has always been touchy about common edges in topography.   This really deals with Revit's methods of defining a line.  The same problem exists with imported CAD geometry.  Parallel lines in CAD my not be parallel in Revit when that CAD is imported. 

So even though where you are editing is away from that common edge, Revit thinks something has changed.  Try as I suggest and paste in that common line into your sketch... AND DON'T edit that line.

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danezeq

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Joined: Fri, Apr 5, 2013
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Thanks for your answer.

Again, that's what i did. now i'm dealing with a line which is far away from the almost-intersected subregion. it's a line which is definitly not common and not close to be common. it's not a "sensetive situation".

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itsmyalterego

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Joined: Thu, May 28, 2009
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I do a LOT of subregion work for coneceptual/masterplanning type projects, and I see this pretty commonly. It kills me.  Occassionally, even opening editing mode on a subregion and then finishing without making any  changes will result in an error.  It's at this point I take the hint to restart, or resort to 1/2" offsets between regions. I find that start-end radius arcs in your boundaries can cause one alteration to ripple through several connected nearby line segments as well.

I would suggest breaking up MASSIVE subregions into smaller blocks where possible. It's not always wise to lump all subregion materials into a single region, even if for no other reason than you'll lose less work if one of them begins behaving in a hopeless fashion.

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