DesignBuilder provides interoperability with BIM models through its gbXML import capability. This allows you to import 3-D architectural models created in Revit, ArchiCAD or Microstation (and other 3-D drawing systems that support gbXML data exchange) to provide heating and cooling system sizes and environmental performance data in the most efficient way possible.

Revit users can access DesignBuilder while working on their BIM models through the DesignBuilder Revit Plugin. This allows the model to be checked and analysed without leaving Revit.

An important feature of DesignBuilder gbXML import is the removal and repair of gaps between zone inner volumes, which means that models lose very little geometric information in the transfer from CAD to DesignBuilder. In fact, the imported and rendered DesignBuilder model may look more realistic than it did in the CAD software! An example of a rendered image imported from ArchiCAD is shown below.  

• BIM > DesignBuilder > EnergyPlus is a convenient and accurate way to run EnergyPlus simulations from BIM models. In many cases this may be preferable to using black box IFC > IDF translation utilities.
• Because the DesignBuilder modeller is true 3-D, architectural CAD data loses little of its 3-D detail in the transfer. So unlike competing systems, accurate daylighting and CFD simulations can be carried out without the need to reconfigure the model to include partition wall thickness.
• The DesignBuilder gbXML import process includes sophisticated healing algorithms allowing missing, misformed and misaligned CAD surfaces to be corrected.
• Shading surfaces can be imported as well as standard construction surfaces like walls, windows, roofs, floors, doors etc.

Import from SketchUp 

Greenspace Reseach offer the gModeller plugin for SketchUp that allows 3-D models created in SketchUp to exported as gbXML and imported into DesignBuilder.