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362 | ChApter 9 ConCeptual Design anD Design analysis

Once you’re ready to finish the export, click Next. This will give you the standard Save
As dialog box, allowing you to locate and name your gbXML file. Depending on the size and
complexity of your building, a gbXML export can take several minutes and the resulting file size
can be tens of megabytes.
You’re now ready to import the gbXML file into your energy analysis application to begin
computing your energy loads.

The Bottom Line

Embrace energy analysis concepts. Understanding the concepts behind sustainable design
is an important part of being able to perform analysis within the Revit model and a critical
factor in today’s design environment.
Master It What are four key methods for a holistic sustainable design?
Create a conceptual mass. Understand ways to generate building forms quickly and easily
to explore a variety of shapes and orientations.
Master It Describe how you can use families to quickly generate form.
Prepare and export your model for energy analysis. Being able to predict a building’s
energy performance is a necessary part of designing sustainably. Although Revit doesn’t
have an energy-modeling application built into it, it does have interoperability with many
applications that have that functionality.
Master It Explain the steps you need to take to get a Revit model ready for energy
analysis.

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