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Valued Contributor
spike81101
Posts: 79
Registered: ‎03-15-2007
Message 1 of 7 (154 Views)

North Rotation help

154 Views, 6 Replies
02-07-2008 01:29 PM
I realize that there is no north arrow rotation, so I need some help.

The site was surveyed and we now found out that north is to the right. When we showed north pointing up, the client threw a fit and we were forced to point it to the right. Now...here is ithe problem.

I'm doing profiles and labeling the inverts and directions, is there any way to get them to label correctly now?
*Allen Jessup
Message 2 of 7 (154 Views)

Re: North Rotation help

02-07-2008 01:41 PM in reply to: spike81101
Yes. Rotate the whole project so that it is oriented correctly. Determine
where north actually is. True North, Deed North, Grid North. Determine on
and use it. You will then have to determine the correct bearing or azimuth
between 2 established points. Use that line as a reference for rotating the
project.

Make sure everything in the Whole project is rotated. If you have separate
drawing that have point, surfaces, alignments, etc. They must all be
rotated. Especially make sure that any control for field work gets put in
the same system.

It doesn't take a piece of software to create this situation. I've see WEST
arrows on plans before there was any CAD at all.

Allen

wrote in message news:5842184@discussion.autodesk.com...
I realize that there is no north arrow rotation, so I need some help.

The site was surveyed and we now found out that north is to the right. When
we showed north pointing up, the client threw a fit and we were forced to
point it to the right. Now...here is ithe problem.

I'm doing profiles and labeling the inverts and directions, is there any way
to get them to label correctly now?
Valued Contributor
spike81101
Posts: 79
Registered: ‎03-15-2007
Message 3 of 7 (154 Views)

Re: North Rotation help

02-07-2008 02:50 PM in reply to: spike81101
Part of the problem is that this was already sent out in a previous package without profiles on it. So it would actually be a lot of work to redo all of those as well. We're also worried about someone else working on this project and not knowing about the rotation, and using the survey data and not knowing why everything is all messed up.

Your suggestion was on the table at our last meeting, but I'm really on the fence about doing it.
*Allen Jessup
Message 4 of 7 (154 Views)

Re: North Rotation help

02-08-2008 06:13 AM in reply to: spike81101
I didn't quite follow what you were saying. Redoing all of what? If you
move/rotate the surface and the alignment together the profile shouldn't
change. But I think you're talking about something else.

On the fence or not. The drawing has to be in one system or the other. You
either have to rotate everything to match your Plan/Published system or your
have to issue new drawings in whatever system the drawing is in. You could
just label every line manually. But that's more dangerous that either of the
other solutions.

wrote in message news:5842293@discussion.autodesk.com...
Part of the problem is that this was already sent out in a previous package
without profiles on it. So it would actually be a lot of work to redo all
of those as well. We're also worried about someone else working on this
project and not knowing about the rotation, and using the survey data and
not knowing why everything is all messed up.

Your suggestion was on the table at our last meeting, but I'm really on the
fence about doing it.
Distinguished Contributor
Aaron_S
Posts: 141
Registered: ‎04-06-2007
Message 5 of 7 (154 Views)

Re: North Rotation help

02-08-2008 06:18 AM in reply to: spike81101
Couldn't you just rotate the UCS?
*Allen Jessup
Message 6 of 7 (154 Views)

Re: North Rotation help

02-08-2008 06:36 AM in reply to: spike81101
You could. But I believe that would be equivalent to entering the door
marked "Abandon ALL hope Ye who enter here".

I thought using a UCS to affect C3D objects was one of the biggest "No NO's"
of all.

Allen

wrote in message news:5842708@discussion.autodesk.com...
Couldn't you just rotate the UCS?
Valued Contributor
spike81101
Posts: 79
Registered: ‎03-15-2007
Message 7 of 7 (154 Views)

Re: North Rotation help

05-14-2008 07:49 AM in reply to: spike81101
OK, I found a solution. Survey database is amazing. I just found the state plane coordinates for a few points on my drawing and created a new drawing with that. Now using the survey database with a undefined coordinate system I was able to have the survey automatically line up with state plane coordinate system, making North up like it is supposed to be.

I wish I had known about survey database sooner!

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