Revit to Ecotect
This video, created by Autodesk's Aryn Bergman, will take you through the process of exporting a Revit model to Ecotect via the .FBX file export.
It is important that your model be as simple as possible for the Ecotect export to work properly. - See Preparing Your Model for Analysis for information on best practices for creating models used in simulations.

