A Catalog family is a family that relies on a .txt file to define the values for certain parameters within a family. When loading the Catalog family into a Project file Revit® will automatically read the matching “txt” file and create the appropriate family types within the Project file, based on your selection. Catalog families do not save that much file size in my opinion. Their benefits are more about only having the relevant types listed in the Type pull down menu, within the Project file, if appropriate.
The .txt file will tell Revit® what values to apply to the various Type parameters within each family type so that the family types match the properties in the .txt file. A Type Catalog family is used when there are many types within a family and allows the Content creator to edit the defined values directly in the .txt file easily without even going into the Revit® family editor.
- The Catalog .txt file must match the family name exactly and be in the same folder location as the family in order to work. E.g. Family Name: AD_Broom.rfa and Catalog File name: AD_Broom.txt
- These families must be loaded into a project file using the “File> Load from Library> Load family “option.
- The user does not have to load in all the types within a family and can select which they want to load from the menu list which is automatically displayed by Revit®.
© Copyright Reserved by Michelle Louw (Excerpt from My speaker notes at National Revit Technology Conference 2008.)