Does changing coordinates/project north through time breaks the model?

[daniel.carreiro]

Hi. Something ocurred with an architecture model that I got from someone.

I think he kept changing the coordinates and project north during his work. This is easily detectable as some of his elements in his model, in this case, columns and walls are slighly rotated. In the following example, only 2 elements are perfectly orthogonal. The values that I found in those rotated elements are always different, this isn't even a consistent error. Is it due to the constant change of the project north in the project? 

 I think that defining coordinates and project north of the project should be mandatory first steps and they shouldn't be changed. This brings issues to the model that can't be fixed.

For example, in the following example, even thought the elements (columns and walls) have an angle of 90º, they just don't look aligned. I see something different everytime I zoom in.

zoom in:

+zoom in:

also, on 3D view I can see that they are not aligned and see differnt things everythime I zoom in:

zoom in:

+zoom in:

I'm supposed to model the structure using the elements in that architecture model but it is just unworkable.

Is there a way to fix it? and are these the reasons that this is happening?

[daniel.carreiro]

Another important fact I should mention is that, when linking this model to a new project, I can't import the current coordinates in that model. When doing that, the coordinates that I get very FAR, which I imagine these are previous coordinates used in that model? The only time I've seen such weird shapes in elements were when, once, my project base and survey points were hundreds of km away... 

[barthbradley]

Changing Project Base Point coordinates or changing Angle to True north or switching between Project North and True North would have no affect on the Model.  It could be that you are seeing anomalies in the way that Revit displays the geometry because there is geometry in the project ,or the project itself is positioned far, far away from the Internal Origin of the project.  

See this:

http://help.autodesk.com/view/RVT/2018/ENU/?guid=GUID-3F79BF5A-F051-49F3-951E-D3E86F51BECC

[daniel.carreiro]

I meant rotating project north and aligning selected line or plane. I see that as a reason those angles are always different, for each time it was changed. the project base point and survey point are pretty close to each other.

[barthbradley]

Yeah, I'm not following. "Rotate" project north?  You mean change "Angle to True North"?  

If you have an "Angle to True North" and you switch the View from Project North to True North, then orthogonal will be different to that view. If the "Angle to True North" was very slight, and you are modeling in a "True North" view, you may not readily see that you are placing elements slightly askew to those elements that were placed when the View was set to "Project North".   Maybe that's what happened.