Run the Mesh Import add-in in Revit.

Select OBJ file.

Set options -- scale, category, and orientation.

Categories available are: Casework, Entourage, Furniture, Generic Models, Lighting Fixtures, Mass, Mechanical Equipment, Planting, Roads, Site and Structural Framing.

Pick a point on the current work plane for insertion

The import may be moved and rotated as needed. It will take on the appearance of its Category. It can also be rendered the same as other elements in Revit. To re-scale, simply undo or delete, then re-import using a different scale in the app's dialog box. The new shape may be copied freely in the project.

The installer that ran when you downloaded this plug-in from Autodesk App Store has already installed the plug-in. You may need to restart the Autodesk product to activate the plug-in.  

To uninstall this plug-in, exit the Autodesk product if you are currently running it, simply rerun the installer by downloading it again from Autodesk Apps, and select the 'Uninstall' button, or you can uninstall it from 'Control Panel\Programs\Programs and Features' (Windows 7 / 8 / 8.1 / 10) or Add/Remove Programs, just as you would uninstall any other application from your system.

See http://truevis.com/revit-mesh-import for app details and to give feedback.

• For English Language Revit
• There is some size limit. It can be worked around by simplifying one’s mesh, etc.
• Meshes should be manifold
• Some aspects of the OBJ format such as smoothing are not imported. This can be worked-around by editing and exporting from mesh software like MeshLab
• Groups defined in the OBJ are imported as separate shapes
• Associated MTL and texture images of the OBJ are not taken into account. Appearances of the imported shapes are controlled through Object Styles and overrides.
• Some meshes or data in OBJ files may be incompatible with Mesh Import
• Resultant shapes can neither be mirrored nor scaled in Revit