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How do you handle massive-sized equipment 3D files?

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    How do you handle massive-sized equipment 3D files?

    I have some 3D equipment files from a vendor that I need to get into my architectural model, but the files are absolutely massive. They sent me STEP files, at over 350 MB each, as well as 3D DWG files at about 90 MB each, and Revit family files at around 60 MB each.

    Every single method I can think of is massively slow or problematic. The Revit RFA files (made from importing the DWG files) are corrupted and crash my machine every time I try to open them. The DWG files take huge amounts of time to bring in, and then any view movement with the DWG model displayed takes very long to regen the view. The STEP files are just about unworkable when I try to import one into AutoCAD.

    They also sent a small Navisworks file with all the equipment, which came in great, easy, fast, already in the right place. But the graphics on them are just terrible.

    The machines I'm using are no slouch, either. 32 GB RAM, with NVMe solid state drives and 6 or 8 core processors. Everything just grinds to a halt when trying to work with these files. Any suggestions?

    At this point I'm trying a separate Revit file that is empty with nothing but my building file linked in, and the 3D DWG files linked in. Then I will try linking that file back into the building file. But I'm still not expecting any decent performance. But at least the file can be turned off in the view when working in it.
    Last edited by PatrickGSR94; April 20, 2020, 07:08 PM.

    #2
    The linked file did not work. When I linked in the Revit file with equipment, then set the plan view to the plan in the link that shows the DWG files, I got drawing errors, then finally it crashed Revit entirely.

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      #3
      I think you will have to deal with the way they look (I'm guessing a lot of triangles?) when getting them from a third party. I mean modifying the files will most likely not make them very happy. So, stick with the Navisworks file or let them make better Revit families and be sure to tell them these suck. I did that once and got a project making them better ones

      But it still amazes me that importing some file format into Revit makes people think they can do Revit.
      Company Website: www.deurloobm.nl
      Revit Ideas: Is this family Mirrored? | Approve warnings | Family Type parameter just those in the family

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        #4
        No, Navisworks doesn't work at all. Most of the geometry doesn't even show up in plans, and the entire model displays when a section cuts through it (like with mechanical families).

        It's not a question of "doing Revit". I'm pretty sure the models were made in Inventor or Fusion 360 or something similar that saves out STP files. Then those files were converted into DWG files, where were then brought into Revit to make RFA files. And they all just contain so much geometry that it makes my machine grind to a halt.

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          #5
          Originally posted by PatrickGSR94 View Post
          No, Navisworks doesn't work at all. Most of the geometry doesn't even show up in plans, and the entire model displays when a section cuts through it (like with mechanical families).

          It's not a question of "doing Revit". I'm pretty sure the models were made in Inventor or Fusion 360 or something similar that saves out STP files. Then those files were converted into DWG files, where were then brought into Revit to make RFA files. And they all just contain so much geometry that it makes my machine grind to a halt.
          Right. What Robin is implying is that what they are doing is as good as not providing you a file "for Revit," at all. If thats what the consultant is giving you, just pretend your equipment consultant doesnt work in compatible software, because its worthless inside Revit. Unless you want to get busy modeling tons of equipment, over again.
          Aaron "selfish AND petulant" Maller |P A R A L L A X T E A M | Practice Technology Implementation
          @Web | @Twitter | @LinkedIn | @Email

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            #6
            This is a project we're doing where the client sent .nwc files to our MEP consultant.
            So they are linked into a link.
            Not super-detailed, but they look pretty decent
            Click image for larger version

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ID:	400240
            Dave Plumb
            BWBR Architects; St Paul, MN

            CADsplaining: When a BIM rookie tells you how you should have done something.

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              #7
              Well the stuff I tried appears to be the same thing they did. Tried to get the STEP file into CAD, and tried to get the CAD into Revit. I don't know if they have super powerful machines or what. My machines (both home and office) just can't handle them.

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                #8
                Originally posted by DaveP View Post
                This is a project we're doing where the client sent .nwc files to our MEP consultant.
                So they are linked into a link.
                Not super-detailed, but they look pretty decent
                [ATTACH=CONFIG]38707[/ATTACH]
                Yeah the NWD file they sent us looked fine in 3D views. But in floor plan views they were all screwy. Half the geometry wasn't showing up, and with Coordination models apparently there's almost no graphic control over them. I would love for the Navisworks file to work as it's only 10 MB. But it simply looks terrible in 2D views.

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                  #9
                  Originally posted by Twiceroadsfool View Post
                  Right. What Robin is implying is that what they are doing is as good as not providing you a file "for Revit," at all. If thats what the consultant is giving you, just pretend your equipment consultant doesn't work in compatible software, because its worthless inside Revit. Unless you want to get busy modeling tons of equipment, over again.
                  Yep.

                  Don't know who brought in this party and what the requirements were for them to get the project, but if it was the client (so you both have the same client) tell them the stuff they send you sucks and that you need better models and potentially the client has some more leverage over them and if there is a Revit requirement in the contract tell them that that model is not Revit even though there is an .rvt extension on the file. And if nothing helps, just go the old fashioned way (2D cad and pdf), but make very clear to everybody that this means all the crap why we are using Revit in the first place (failure costs etc.) will be back too.

                  Maybe as a last resort load both the 3D stuff and a 2D dwg's into the project, so it looks OK in plan view (hide the 3D) and you can still do some 3D coordination, but you need to be VERY careful that the 2 files are the same of course, so slippery slope.
                  Company Website: www.deurloobm.nl
                  Revit Ideas: Is this family Mirrored? | Approve warnings | Family Type parameter just those in the family

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                    #10
                    OH and from Inventor can't they go directly to IFC for example which you can then import directly into Revit?
                    Company Website: www.deurloobm.nl
                    Revit Ideas: Is this family Mirrored? | Approve warnings | Family Type parameter just those in the family

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