To create a family, you begin a new file by selecting File->New->Family from the Revit pull-down menus. Revit Component Families are a unique file type, with an extension of RFA of RFA . They can control materials, visibility states and non-graphical information (such as catalog number, voltage, cost, etc.). Parameters can control more than just sizes sizes and distances, however. For example a table family can be created to have several sizes, all based on parameters that can be set by the user, allowing for a single family definition to accommodate several different kinds of tables. One of the strengths of component families is that they can be controlled by parameters, which allow for a great deal of flexibility. In-Place Familes represent “one-off” items custom geometry that is n ot meant to be re-used or shared between projects. When considering geometry, Component Families are objects that might be ordered out of a catalog and installed or placed on the job site. Examples of Component Families are equipment, fixtures, devices a nd fittings, as well as custom annotation tags and callouts. Component Families (the focus of this class) can be created and customized, and can be stored in an external library, to be loaded into your Revit project on an “as needed” basis. all belong to System families, as do geometric objects such as ducts and pipes (anything that would be assembled on the job site). They typically are not shared between Projects. System Families are managed by Revit, and cannot be created or deleted. Every object, whether it is a geometric component, an annotation component, a View or any other component in Revit, is part of a Family. Parametric Families – Conceptual Overview Families are the heart of the internal data structure of Autodesk Revit. Creating Parametric Families in Autodesk Revit MEPĬreating Parametric Components in Autodesk Revit MEP
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