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Forums >> Revit Building >> Technical Support >> dwg shifted in Revit
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Joined: Sat, Jul 3, 2010
13 Posts No Rating |
Hello, all
I was working on site model and received a surveyor’s dwg-A. I deleted unnecessary elements and renamed it A1 and inserted it into it and relocated our model accordingly, so I got project base point and used it to relocated all other model as well (struc, envelope, ID) and gave it to all other professionals.
Today when I reinsert updated dwg-B from surveyor, old and new dwgs are shifted.
I double checked A, A1 & B dwgs `base’ which are all 0,0,0 and by xref them each other, they overlapped perfectly. So it is not the problem of cad.
In Revit, A & B are both shifted from A1. I did a test and make a B1 (deleting uncessary info), B1 shifted as well. What was wrong with A1, its base is the same with all other three files in CAD.
Can anyone explain?
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Joined: Sun, Jun 3, 2012
13 Posts
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Hello.
I could be wrong, but my suspect that the manner in which the Land Surveyor has exported the CAD file may be the issue. As a Surveyor exports from their software they have options available for which datam to export.
In Australia we have Austrailian Geodetic Datum 1966 (AGD66) and Austrailian Geodetic Datum 1984 (AGD84) and more recently we also have GDA94
http://www.geoproject.com.au/gda.faq.html
Other country's will have other datums which Surveyors refer too.
Can you link the updated site information (B) into your Version (A) and see if they overlay correctly - if so, then bind/explode/purge the Version B into A and keep your original link into Revit.
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