Parameterization is a key advantage and feature of BIM technology, primarily demonstrated through the creation of 3D models. Parametric design involves using algorithms or functions within parametric software to connect design components or graphics with related variable parameters. This process creates digital design elements that are data-driven. In essence, parametric design defines the relationship between a model and its parameters, enabling automatic adjustments to the size specifications of related parts by modifying a single parameter. This results in models with similar shapes but varying sizes.
The Autodesk Revit product line supports parameterization. Revit elements can drive component changes through parameters and retain all feature parameter data. Any modifications in Revit views—whether deletion, movement, or resizing—are linked across all views. This means changes made in one view automatically update in others without needing to adjust the model individually in each view. This ensures model consistency and enhances the efficiency of Revit users’ workflows. These view associations are established by the software or developers at the start of the project.
In practice, Revit’s parametric design primarily emphasizes parametric modeling. Parameterized components simplify data management and modifications, making component databases fundamental building blocks of structural models.
Building on previously collected local component data, there are three main approaches to creating a local model library: first, achieving localization through secondary development using API plugin interfaces; second, using Dynamo—an open-source programming tool integrated with Revit—that enables users to create custom node formulas and manipulate model components freely; and third, directly customizing a parameterized component database by utilizing component template files included with BIM software to suit local requirements. Each method has its distinct focus. The first allows for more complex and advanced functions but is time-consuming and labor-intensive. The third is simpler and user-friendly, facilitating quick expansion of component libraries. Dynamo falls in between, offering designers an easy way to control Revit elements via a graphical interface, even without in-depth coding knowledge.
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