The Importance of Understanding Parameters in Revit for BIM Modeling Success

It's crucial to understand the parameters we have in Revit for any Revit user. It gives them a full-fledged understanding of the parameters and their effective uses in BIM modeling.

1. A PRESENTATION BY NARASIMHAMURTHY K C MASTERING REVIT PARAMETERS

2. Agenda 5 Types of Parameters System Parameters Project Parameters Family Parameters Shared Parameters Global Parameters Understanding Parameters

3. 1.SYSTEM PARAMETERS (Built in Parameter) These parameters are built into Revit by default, and they cannot be removed, renamed, or modified. They can be included in tag families for labeling purposes and can be scheduled within Revit.

4. 2 . Project Parameters Project Parameters are custom parameters added to a project. You create them using the command on the Manage tab of the ribbon. Once added, they are available to all objects of the specified category throughout the project. Project Parameters can appear in schedules but not in tags.

5. 3. Family Parameters Family parameters are only available within the specific family to which they are added. They do not appear in tags or schedules, nor do they apply to other families of the same category. However, you can make a custom parameter (either at the project or family level) accessible in tags and schedules by defining it as a Shared Parameter.

6. 4. Shared Parameters Shared Parameters in Revit are defined in an external text file called a Shared Parameter file, accessible from the Manage tab. It's important to maintain a single shared parameter file for the entire firm to ensure consistency. The shared parameter file defines the parameters' behavior. End users do not need access to the shared parameter file; it serves as a reference for parameter definitions. If a custom parameter may be scheduled or tagged, it's best to make it a shared parameter. These parameters can be shared among multiple families, projects and tags. They require the use of a separate text file

7. 5 . Global Parameters Global Parameters (GP) work in a project environment. They can be assigned to drive the values of instance and type parameters of elements in the project.

8. Understating parameters The table below explains the difference between all parameters. As you can see, only Shared and System Parameters can be both tagged and scheduled. Kind of Parameter Who Creates it Where does it live Appear in Tags Appear in Schedules Description System Parameters Built-in Project and Family Yes Yes Built-in to Revit, You cannot change it Shared Parameters User Defined Project and Family Yes Yes Custom Parameter created for the highest portability and flexibility Project Parameters User Defined Project No Yes Custom Parameter accessible to all objects in a Project Global Parameters User Defined Project No No Custom Parameter that can drive exposed instance and type parameters in the project Family Parameters User Defined Family No No Custom Parameter accessible only to the Family

9. Q&A