Hi @lorenrouth​,

When extracting the attributes from AutoCAD, please Click the Parameters button after choosing the DWG reader in the Import Wizard. If you want to use Extended or Block attributes, please select the Group Entities option 'Attribute Schema'. This will do a schema scan of the DWG file. If you want to use format attributes (ie. autocad_*), open the Schema Attribute section near the bottom of the Parameters dialog, and select the desired format attributes in Additional Attributes to Expose.

Extracting the attributes from IFC is more difficult, since most of the properties are stored as traits on the geometry rather than attributes. You may want to try the IFC with Data Views reader, using the data view 'Building Elements with Hierarchy'. This will provide the most common properties as exposed attributes.

Hi @daveatsafe​ ,

Thanks for the reply. With DWGs, I end up using AutoCAD_Layer attribute as the feature type (same value). But with IFC, the attributes I want are not geometry traits. They are listed just like the rest of them:

I will give the Data Views reader a shot, but it makes no sense to me, especially when just before finishing the Import Wizard, they give a list of exactly what I am looking for (see screenshot 3 from original question). Why bother prompting me to select the feature types and then say, "naw"? Surely you would agree that could be improved upon?

Best,

Loren,

The IFC Data View reader is very interesting, as it seems to translate IFC entities into the Revit equivalent. Between the two, I should be able to figure out my goal, which is to "reverse engineer" IFC files that work in Revit and then set up a Workspace that will translate CAD and Excel data into an IFC which can be imported as new model. The next best thing to a Revit Writer, I guess.

Thanks for the tip!

Best,

Loren