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I got a simple model, one zone with a hole in the roof in DesignBuilder.

I exported from DesignBuilder to gbXML and imported it into OpenStudio.

C:\fakepath\DesignBuilderModelView.png

C:\fakepath\OpenStudioSurfaces.png

OpenStudio imported the roof surfaces with a ground outside boundary condition. Why is that the case?

How gbXML model should be constructed so that the roof has outdoors outside boundary condition?

I got a simple model, one zone with a hole in the roof in DesignBuilder.

I exported from DesignBuilder to gbXML and imported it into OpenStudio.

C:\fakepath\DesignBuilderModelView.png

C:\fakepath\OpenStudioSurfaces.png

OpenStudio imported the roof surfaces with a ground outside boundary condition. Why is that the case?

How gbXML model should be constructed so that the roof has outdoors outside boundary condition?

I got a simple model, one zone with a hole in the roof in DesignBuilder.

I exported from DesignBuilder to gbXML and imported it into OpenStudio.

C:\fakepath\DesignBuilderModelView.png

C:\fakepath\OpenStudioSurfaces.png

OpenStudio imported the roof surfaces with a ground outside boundary condition. Why is that the case?

How gbXML model should be constructed so that the roof has outdoors outside boundary condition?

XML file https://drive.google.com/file/d/1tsSCOcYU4Hcww9z6UtfqM8RNn9TyP_4o/view?usp=sharing