AutoCAD Civil 3D General Discussion

AutoCAD Civil 3D General Discussion

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*Expert Elite*
AllenJessup
Posts: 6,183
Registered: ‎05-21-2003
Message 1 of 5 (299 Views)
Accepted Solution

Alignment comes up short

299 Views, 4 Replies
11-13-2012 08:20 AM

I have a project that comes and goes. It was actually started in Softdesk. Right now I'm working in Civil 3D 2012. I have an alignment that represents the left edge of pavement. Although I'm calling an offset alignment. It was created before they existed. So it's not linked to the centerline. There have been many changes to it over the past few years. Now it has a problem.

 

I wanted to edit in the Panorama. Right-click > Edit Alignment Geometry > select Alignment Grid View from the Alignment Layout Tools. When I went to the last segment in the Gird View, which was near where I wanted to edit, a segment about two thirds of the way along the Alignment was highlighted. Further investigation showed that although the whole Alignment would highlight when selected, all commands said the Alignment ended much sooner than the end station.

 

I've found that that alignment has been broken for quite a while but was intact at one time. My question is - What's the best way to repair/recreate it. I know I can explode it and create a replacement Alignment from the resulting entities. But is that the best way?

 

Thanks.

Allen
Civil 3D 2012 SP 2.1
Dell Precision T7400
Xeon CPU 3.16 GHz
Nvidia Quadro FX 4600
12 GB RAM
Win 7 Pro, 64-bit

 

Maybe a sub-ent is running the wrong direction? That would "break" the alignment.

 

I've seen where users want to add a sub-ent from an AutoCAD entity (Convert AutoCAD line and arc), but the line or arc was drawn in the wrong direction. When it gets added to the alignment, the alignment takes on the objects, but the stationing stop short of the objects. Reverse subentity fixes this.

*Expert Elite*
AllenJessup
Posts: 6,183
Registered: ‎05-21-2003
Message 2 of 5 (294 Views)

Re: Alignment comes up short

11-13-2012 08:33 AM in reply to: AllenJessup

More info. I decided to work on the opposite edge of pavement while waiting to see if anyone had a suggestion. I found it has the same problem. The Mainline Alignment doesn't have any problem.

 

The point the edge of pavement Alignments seem to be failing is in a compound curve. This is one of the areas we made a major change. We had one curve through this area. It was then changed to 3 curves to minimize some acquisitions. It looks like on the edge lines the Alignment wont show any stations after the second PCC. I don't remember how I replace the one curve with 3.

 

Allen

*Expert Elite*
tcorey
Posts: 2,767
Registered: ‎12-18-2002
Message 3 of 5 (293 Views)

Re: Alignment comes up short

11-13-2012 08:37 AM in reply to: AllenJessup

Maybe a sub-ent is running the wrong direction? That would "break" the alignment.

 

I've seen where users want to add a sub-ent from an AutoCAD entity (Convert AutoCAD line and arc), but the line or arc was drawn in the wrong direction. When it gets added to the alignment, the alignment takes on the objects, but the stationing stop short of the objects. Reverse subentity fixes this.

Tim Corey, Owner
Delta Engineering Systems
Redding, CA
Autodesk Authorized Value-Added Reseller
*Expert Elite*
AllenJessup
Posts: 6,183
Registered: ‎05-21-2003
Message 4 of 5 (291 Views)

Re: Alignment comes up short

11-13-2012 08:45 AM in reply to: tcorey

That sounds quite plausible. However, now when I try to edit the geometry the Alignment Layout Tools are all grayed out. So now I can't even try that. I'm going to Audit the drawing, close it and reopen it to see if that gives me back any control.

 

Allen

*Expert Elite*
AllenJessup
Posts: 6,183
Registered: ‎05-21-2003
Message 5 of 5 (287 Views)

Re: Alignment comes up short

11-13-2012 08:52 AM in reply to: tcorey

An Audit and Recover gave me back the ability to edit the Alignment. Reversing the 3rd curve fixed the alignment.

 

Thanks for the help.

Allen

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