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Thread: Is there ever a reason to move the Project Base Point while it is "clipped"?

  1.    #11
    Member koolair's Avatar
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    There's an issue the consultants are having on my project. They find that their PBP is thousands of miles away from the survey point that wall hosted M/E elements will not move correctly when changes are made to the linked host (such as linked walls and such). Autodesk advised that they relocate the PBP to 0, 0 for N/S & E/W.

    Now that we all made the change in our own models, we've updated our shared models and I have BIM Probss...

    Is THIS an issue worthy of messing with this coordinate system half way into the project when everything is due for submission/construction/fabrication ASAP?

    Hope to hear some feedback. This is killin me!

  2.    #12
    Mr. Revit OpEd
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    Quote Originally Posted by koolair
    ...They find that their PBP is thousands of miles away from the survey point...
    If you're still wrestling with this...

    The SP and PBP can be very far apart, that's fairly normal. It's how far the elements in the model are from Revit's origin that causes problems. For example, I've seen the PBP moved very far from the file origin while unclipped and then the model is built...very far from origin (the mathematical origin of the file). That's bad.

    When we move the PBP (while clipped) all we are really doing is moving the SP (Survey Coordinate) system away from the file's origin.
    tzframpton likes this.

  3.    #13
    Forum Addict tzframpton's Avatar
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    Quote Originally Posted by koolair View Post
    There's an issue the consultants are having on my project. They find that their PBP is thousands of miles away from the survey point that wall hosted M/E elements will not move correctly when changes are made to the linked host (such as linked walls and such). Autodesk advised that they relocate the PBP to 0, 0 for N/S & E/W.

    Now that we all made the change in our own models, we've updated our shared models and I have BIM Probss...

    Is THIS an issue worthy of messing with this coordinate system half way into the project when everything is due for submission/construction/fabrication ASAP?

    Hope to hear some feedback. This is killin me!
    Should be alright. I use Specify Coordinates all the time and have even had to make adjustments during the middle of a project somtimes. Just make a sacrificial copy of your model to test it out first if you feel uneasy about it. Leave the PBP and SP where it's at.

    -TZ

  4.    #14
    Forum Addict tzframpton's Avatar
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    Quote Originally Posted by Twiceroadsfool View Post
    ...dont ever even use Acquire all that much (although i understand why some people do).
    I use it because I was told to by any and all learning material the first years learning the program. But as an MEP guy, we're always linking in the architectural model so that's the standard, so might as well Acquire to get it all lined up in one pass. If we're modeling fresh, then of course it's easy - link in the arch Origin to Origin and roll full steam ahead. It's when other files don't align that makes me start cussing, like when the structural and architectural come in at two entirely different locations, elevation and rotation. Man... just frustrating lol.

    -TZ
    kubsix likes this.

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