Revit is one of the most widely used BIM software platforms in China, boasting a well-developed system. However, its modeling approach differs significantly from traditional design software and methods. Unlike traditional models that rely on concepts like “layers” and “blocks,” Revit introduces a unique concept called “families.” A Revit model is composed of numerous families of varying sizes and types.
A Revit family is a category of elements grouped together based on shared parameter sets (or properties), similar functions, and graphical representations. While the values of some or all parameters may vary among different elements within a family, the structure and definition of these parameters remain consistent. Essentially, a family consists of elements that share a common set of properties (called parameters) and associated graphics. The variations within a family are known as family types or simply types.
The concept of a family is fundamental in Revit, simplifying data management and enabling easy modification of building parameters. Each family contains extensive architectural information, which designers can define according to their needs. This information includes parameter variables such as size, shape, and material. Importantly, designers do not need advanced programming skills to create different family components. By creating or editing family files, parameters can be added or modified—defining attributes like length, width, material, and base height. Common building components such as doors, windows, and columns are created using the family editor.
Essentially, building a BIM model involves simulating and assembling various building components. In Revit, these components are based on families, with each family component defined as a type that includes detailed parameter information. These parameters specify the internal dimensions, shape, material, and the relationships between variables, allowing for precise control over the component’s properties.
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