Adding Truss Family Parameters

1. In the Family Editor, click Create tabProperties panelFamily Types.
2. Under parameters you have the option to add, modify, or remove parameters from the family type. Adjust parameter settings and click OK.
3. Enter formulas and define the parameter settings. See Creating Parameters.

   If you leave the structural framing type blank in a truss layout family, the truss will behave as follows:

   • The value for truss members in the truss type will show Set Framing Type, which means that the truss will use the default, or most recently created structural framing type in the project.
   • When set to Set Framing Type, Revit will not change the values for framing members in the family type properties when a truss is created in the project environment. The value remains set to Set Framing Type, the default setting, until you change it in the family type properties.