have a site plan autocad file link into Revit, if you look at the screenshot you will see the no. 2 N 29881.659, E 5095.835. Is at the end part of the site plan boundary. But when I key in the N/E value Using Revit Project Base Point is nearer into no. 1. What is the problem with this Project Base Point or autocad file?
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just to follow up the dimension should be 150040 instead of 150.040 maybe that is the reason?
Before you linked the CAD file in, did you open the dwg file and cleaned it? ie: the Portion you Need can be zoomed to the extents of the Screen?
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@RDAOU yes i cleaned the autocad file to the max.
you wrote
...Is that a decimal Point or a Digit grouping sep. in the dim reading 150.040 vs 150040??? in Revit it is obvious it is mmm...
when i measure the distance it says 150.040 it should be 150040mm
you wrote
...can you Change the Project Units and add 4 decimal Points then in the CAD file Switch unit to mm and place new piont coordinates and validate your findings? It could be that what you are keying in (IN Revit) is missing a few Digits due to the defined Units accuracy settings
already changed to mm and 4 decimal points
you wrote
..Last probable cause...How far off from the Startup Location in Revit are you? If too far off (>10miles) nothing will tally
please see attached is that consider 10 miles? (not sure)
Sorry for another question. what is the reason why the value of N becomes - sign?
thank you
Looks like a units issue to me. When you imported the CAD plan did you use 'automatically detect units' or set the units yourself? If it's the former try doing it again selecting metres and see if that sorts it.
In general if this is a survey from a reputable survey company then it will more than likely be in metres rather than millimetres.
hello, i tried both auto-detect and millimeters and the outcome are the same. the file is from microstation .dgn and imported to autocad. but the units is still in MM. i have a feeling that caused the problem of importing but not too sure. thank you.
If you aren't going to try it then I'm sorry I can't help you any further. But to finish, if you have a dimension that reads as 150 instead of 150000 you have a units issue.
Good luck sorting your issue.
Just in case you didn't understand it's the bit in RED that you need to change.
You didn’t really answer any of my questions accurately...
Similar to what @JasonLLINDNER and @Keith_Wilkinson have already said...from just a look at a screenshot it seems that the most probable cause is the Units...and a messy DWG cad file.
One of two Options...Either you upload the file for someone to help you fix OR you Need to try every single suggestion given and report what you did, how you did it and what were the results (yes/no/maybe/not possible are not acceptable answers if you Need to resolve this)...this is one of the most annoying yet easiest Topics to resolve in Revit so let’s not make it a guessing game else I too won’t be able to help either if it's going in that direction
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@BIM_Dreamer wrote:
not possible autocad file is in MM. thank you
It does not mean a whole lot, if anything at all. Change units in AutoCAD does not scale the drawing for you.
What do you see when you measure a know distance in AutoCAD? I would do what @Keith_Wilkinson has suggested in his screenshot.
Meh. Just move the cad link to line it up with your Revit base point. It's just a background.
Ordinarily I'd agree wholeheartedly with that solution, however if the import scale is wrong then there's still a major issue.
thank you all, just changed dwg units in autocad and link again into revit now reading correctly.
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