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Same cube size, different area exported 2 IFC

2018-07-11
2018-08-06
  • Dirk Van Rillaer

    R2018.3
    18.4.0

    A little bit odd:
    basic cube, simple extrusion, size 1m x 1m x 1m, modelled as Loadable Family (Generic Model), and as Model In-Place (Generic Model).
    The area values that are exported to IFC are different for both cubes.

    I would expect that the surface area is exported, which would be 6 m2 (as the FZK Viewer is independently calculating it correctly).
    The Model In-Place is displaying in the Revit Pset "Dimensions": Area = 1 m2 (probably the footprint)
    The Loadable Family is displaying in the Revit Pset "Dimensions": Area = 3 m2 (half the surface area of the cube???)

    It seems unrelated to IFC version (IFC2x3 and IFC4) and unrelated to the Revit Category (I also tried Air Terminals and so on).
    Am I doing something wrong or are these exported areameasurements indeed a little bit odd?

     

    Last edit: Dirk Van Rillaer 2018-07-11
  • Andy Parrella

    Andy Parrella - 2018-08-06

    Seems like there might be some unit conversion stuff going on - i filed an issue to fix.

     

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