Contrary to system families, loadable families are created in external RFA files and loaded into projects. These family types are used to create:
- Building components that would usually be purchased, delivered and installed in a building. Some examples are doors, windows, casework, furniture, and plants.
- System components such as water heaters, boilers, air handlers and plumbing fixtures.
The term component refers to instances of loadable families that are hosted by other elements. For example, doors are hosted by walls, furniture is hosted by a floor or level, fans are hosted by ceilings, etc.
Due to their highly customizable nature, loadable families are the most commonly created family type in Revit. Catalogs can be made for families containing multiple types, which lets users download only the specific components needed for a project.
- To create a loadable family, first you begin with a template. It is already supplied by the software, and it contains all the information about the family you are creating.
- Then you sketch the geometry of the family, using parameters to establish relationships between family components.
- The next step is creating the desired variations or family types, and determine their visibility and detail level in multiple views.
Testing the finished family in a sample project is recommended before using for modeling an actual building.