Scale Problem with the ABD Integration with GC, modelo looses scale

So I'm doing the stacking tutorial doe the ABD integration with GC (I'm at page 13) and for some reason the scale goes crazy after I reopen the model, or just try to experiment with sliders to define the height of the slab.

I'm attaching a picture, if anyone knows what going on I'll be most grateful

Best Regards

Rafael

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  • Hi Rafael,

    Stepping through the Massing QuickStart, I do not end up with the result you captured in the screenshot, not even after closing out the session and re-opening the file. Therefore, I can only venture a guess at what might be the cause for what you see. To me it looks like some file unit mismatch. It almost looks like a twelve-time increase in the footprint size (oddly enough not in height), as if there was some change between Imperial/US and metric units. Did you save your file as GCT file at some point?

    I might be able to conduct more educated guessing if you attach the DGN file in which you see what you captured.

    Hopefully this gives you some idea how to correct this apparent XY-scale change.

    Kind regards,

    Volker

       

  • Hello Volker,

    Thank you for your reply, you're always of great help :D

    I'm attaching the DGN file, but oddly enough it seems that now loaded correctly, what's strange to me is that I've had had problems yesterday with the same issue, and when I start to operate it goes crazy. I haven't saved a GCT file in this session.

    I would like to ask you if when operating in GC and MS or ABD you need to have some special units awareness, is kind of hard to understand how GC translates the Graph Units into the Model Units, does it have some relation with the "Drawing Scale"  tab.

    Best Regards

    Rafael

    GC_StackingModel-EX01.dgn

  • Hi Rafael,

    GenerativeComponents' unit base is the active design file's master unit. In Bentley's DGN files, the unit settings can be seen under the Settings menu > Design File > Working Units. I see in your file the Master Unit setting is at Millimeters (with Sub Unit set to Millmeters, too). All other design files in the QuickStart appear to be set at Master Unit Meter and Sub Unit Millimeter. The "Advanced Settings" which influence quite a bit how solids are modeled look consistent across files. In any case, the Master Unit discrepancy could create some discrepancies in how the slab looks.

    When opening your file, it all looks as expected. The slab may be a little thin with 900 mm thickness.

    When changing Working Units on the fly, there may be unexpected size/dimension discrepancies, which could arise from GC's sizes based on the Master Unit. When re-running GC's scripts after changing Master Units in a design file, the result could, therefore, look different.

    Unless we get the same "incorrect" result consistently, we won't be able to determine, what exactly is going on.

    GC does include a measurement system which permits to specify dimensions in GC with specific units. It is documented in the GC help under GCScript Programming > GCScript Language > Components of the GCScript Language > Fundamental Types > Measurement Types.

    Best regards,

    Volker

       

  • Thank you Volker,

    As always you're of great help and I'm most grateful.

    Now is GC time for me :D

    Best Regards

    Rafael
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