Rotate Bearings

[Chaznsc]

I have an older cad file that I need to rotate the bearings to a new bearing set. How can I assign the new bearing to a fixed line?

[AllenJessup]

How "old" a drawing. Do you have to worry about the coordinate system? Does in need to keep it's relationship with other drawing? Do you have a Survey Database. Are there Civil 3D alignments, profiles and cross-sections?

If you don't have to worry about any of that. It can be as easy as making sure everything is thawed and one, then rotating everything by the difference in bearing systems. After that it gets more complicated.

Allen

[Anonymous]

You cannot assign a bearing using a reference like LDD did. Bearing North is always the world UCS Y axis in Cvil 3D. As far as I know It cannot be changed.

[Chaznsc]

I was afraid of that. What an oversight. At least give me the option!

[AllenJessup]

Actually it wasn't an oversight. It was on purpose. Base Point and North Rotation were originally developed in Land's predecessor Softdesk (FKA D.C.A.). It's purpose back then was to allow the use of legacy drawings that had not been drawn in any coordinate system. It was not anticipated that it would be used to start new projects. Having a bearing system that is contrary to the UCS could be more than disastrous in Civil 3D. The Map version of the command has also been disabled.

Use my previous suggestion and rotate the whole drawing into the correct bearing system. Then use DView > Twist to orient it so labels and such are up the page.

Allen