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@Yan, I export gbxml from Revit to Ecotect, and then from Ecotect to OpenStudio using .idf (that must be upgraded) Why? I have Revit2012 and funny things go along in the gbxml, so I clean them up in Ecotect (when you import, you can filter what goes where), and associate to thermal or shading zones. Next I click on it and use EP-launch to upgrade from idf 3.0 to 8.2, and then I open in OpenStudio.

Gap between floors: The gap can be solved saying that the roof floor has an alternate construction in the ceiling, just pay attention to making the same materials in the oposite order. Hope it helps.

@Yan, I export gbxml from Revit to Ecotect, and then from Ecotect to OpenStudio using .idf (that must be upgraded) Why? I have Revit2012 and funny things go along in the gbxml, so I clean them up in Ecotect (when you import, you can filter what goes where), and associate to thermal or shading zones. Next I click on it and use EP-launch to upgrade from idf 3.0 to 8.2, and then I open in OpenStudio.

Gap between floors: The gap can be solved saying that the roof floor has an alternate construction in the ceiling, just pay attention to making the same materials in the oposite order. Hope Then the air space between them will only exist in your eyes, some experts told me some time ago (I+m an architect, I must believe the guys I work with.Hope it helps.

@Yan, I export gbxml from Revit to Ecotect, and then from Ecotect to OpenStudio using .idf (that must be upgraded) Why? I have Revit2012 and funny things go along in the gbxml, so I clean them up in Ecotect (when you import, you can filter what goes where), and associate to thermal or shading zones. Next I click on it and use EP-launch to upgrade from idf 3.0 to 8.2, and then I open in OpenStudio.

Gap between floors: The gap can be solved saying that the roof floor has an alternate construction in the ceiling, just pay attention to making the same materials in the oposite order. Then the air space between them will only exist in your eyes, some experts told me some time ago (I+m (I'm an architect, I must believe the guys I work with.Hope it helps.