http://cad-1.com/ | Creating Revit Structural Families with parameters: Every Revit structural model will contain families, such as beams, columns, and joists. Each family has parameters that may represent anything from the material to the height and width of a family component. Parameters give the families their dynamic flexibility and capability in a model. Join Brian Mackey as he demonstrates the ins and outs of building structural family components and describes how adding or manipulating parameters can help your Revit model represent exactly what you want.