AutoCAD Plant 3D General

Valued Contributor
Posts: 78
Registered: ‎08-01-2007
Message 1 of 7 (659 Views)

Working in Real world UCS problem

659 Views, 6 Replies
11-14-2012 10:09 AM

I am working on a project that has been placed in real world coordinates and is a different angle than true north.  I can change my ucs and route pipe with almost no problem. If I continuously route a pipe in both horizontal and vertical directions the pipe will remain perpendicular or parrel to the way i am routing it.   HOWEVER! if I stop routing while inserting a vertical pipe, then click on the "+" grip, when I want to change plane and add an elbow the compass revits back the the ucs being world and will only put in the eblows on the world coordinate plan and not the plane that I am working in.


So, is there a way to change my compass orientation while routing pipe?

Valued Contributor
Posts: 78
Registered: ‎08-01-2007
Message 2 of 7 (653 Views)

Re: Working in Real world UCS problem

11-14-2012 01:25 PM in reply to: blorich

Well after some out of the box thikning I found a pretty good work around for this on my own.  If your site is skewed say 10 degrees from north and you want to work in real world coordinates, you can turn off your compass snaps, turn on polar tracking and add the angles you need to your polar tracking dialog box.  So I went and added 80, 170, 260, 350 and know when i route pipe, it will align to those angles in model space allowing me to place pipes in real world with out having to change my ucs either.  Obivously for different angles like 45's i will have to do the math for those also.



Even tho I have a solution, I would like to keep this topic open incase someone else gets a better solution.

New Member
Posts: 1
Registered: ‎07-17-2013
Message 3 of 7 (401 Views)

Re: Working in Real world UCS problem

07-17-2013 02:57 PM in reply to: blorich

I have the same problem with my project.

Did you find some solution?

Distinguished Contributor
Posts: 136
Registered: ‎08-16-2012
Message 4 of 7 (378 Views)

Re: Working in Real world UCS problem

07-23-2013 10:19 AM in reply to: fcarlos.sotelo

We were having the same basic problem so we decided to rotate the model to a Plant North. We chose to go this route because we couldn't think of any other way of getting orthographic elevation views to show perpendicular to the view. Ortho views will only look N or E or S or W. You can't look N10E. If anyone was able to come up with a solution other than rotating the model, please pass that info on. It would be hugely helpful...

Posts: 530
Registered: ‎12-01-2010
Message 5 of 7 (373 Views)

Re: Working in Real world UCS problem

07-23-2013 04:32 PM in reply to: TRdesigner82

You can make your own views in 2014 now, they don't have to be N S E W. Plus as well with Extension 1, you can have offset coordinates in the Project Configuration

Tomislav Golubovic
Plant Solutions Engineer
Autodesk Australia / New Zealand
Autodesk, Inc.

Distinguished Contributor
Posts: 130
Registered: ‎07-04-2013
Message 6 of 7 (347 Views)

Re: Working in Real world UCS problem

07-24-2013 05:13 AM in reply to: blorich

Try this:


Rotate your UCS on the Z axis to desired angle


Route pipe


When done:


Change UCS back to World


Posts: 24
Registered: ‎03-15-2012
Message 7 of 7 (215 Views)

Re: Working in Real world UCS problem

10-28-2013 11:29 AM in reply to: blorich

What does this do the the true coordinats when extracing Iso's??

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