I am really frustrated right now. Our building is now 40 cm langer and to achieve this, the first and last grids were move 20 cm apart.
Now the point where grids A and 1 used to cross is 20 cm away from Revit Internal 0,0 and I find no wayto get my DWG properly exported (A/1 should be 0,0).
I know I could use the Survey Point as 0,0, but it is representing the real coordinates of my model, which I mean is the real purpose for the Survey Point. In our workflow we sometimes export our model with 0,0 as Project Base Point (A/1) and some times in Real World coordinates (Survey Point as 0,0).
Are you going to tell me that there is not solution for it? I have read a lot of threads about it, but I refuse to belive that it has not changed.
I had a 'great idea' but I guess it would take years before I gather enough support and see it implemented:
https://forums.autodesk.com/t5/revit-ideas/base-point-revit-internal-origin-0-0-0-for-export-import-dwg-ifc/idi-p/9382115
Any advice will be appreciated.
Thank you!!
PS: I allready tried and I cannot link and bind the model. Not working ![]()
You should have extended the building 40 cm from the origin in order to keep it's relative position accurate.
We've never been able to move the Internal Origin in Revit. How did you deal with this kind of user mistake in the past?
@M_Perez wrote:
I am really frustrated right now. Our building is now 40 cm langer and to achieve this, the first and last grids were move 20 cm apart.
Now the point where grids A and 1 used to cross is 20 cm away from Revit Internal 0,0 and I find no wayto get my DWG properly exported (A/1 should be 0,0).
I know I could use the Survey Point as 0,0, but it is representing the real coordinates of my model, which I mean is the real purpose for the Survey Point. In our workflow we sometimes export our model with 0,0 as Project Base Point (A/1) and some times in Real World coordinates (Survey Point as 0,0).
Are you going to tell me that there is not solution for it? I have read a lot of threads about it, but I refuse to belive that it has not changed.
1. The drawings are properly exported based on your Revit model.
2. What is the implication that you seems to be so obsessed about if the A/1 grid intersection is not WCS 0,0,0?
3. If the implication is so great then you should have thought about it before moving the grids.
4. You can duplicate the Site locations, keep one at where the actual Survey datum is, and another one at the Internal origin when you need to export to CAD.
5. Doing (4) is not recommended for various reasons, including misalignment when you link the drawing back in Revit, among other things.
@RobDraw I know ![]()
@barthbradley I didn't deal with this problem before. In the last few projects we started the 'Reference Point' was defined before we startet to model in Revit and we just never changed it. It has not always been an grid intersection, sometimes it is just the corner from a preexistent building, wich never changes.
1.- True
2.- We will be working with 7 different planning offices and several construction companies. That means hundred of plans. In the last project we almost never had to re-align a plan. 0,0 was exactly in the grid intersection. Even when we hadn't sent a plan before to this company. An if not, re-alining was reeeeeeally easy, as long as they had drawn the grids. An even more important, IT WORKS!!(sometimes...)
3.- I thought about it when we built the model, but someone did move the grid without my supervision. Anyway, moving the whole building in the other direction wasn't easy anyway, I wouldn't have instructed them to do it in another way.
4. and 5.- You answered it already
We have also different export present based on which coordinates system we need for each plan. But importing plans from other companies without having to re-align them is the most important point.
Thanks to all for your Answers!!
Hi, that the reason why we always place our gridlines A and 0 in a certain distance to internal 0 Point (for ex. + 300 cm on x and y axis). You'll avoid the conflict described above ![]()
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