Download Here - The Building Coder

Elements Essentials
Figure 36: Information Elements diagram
5.2 Other Classifications
Elements are also classified by the following:
•
Category
•
Family
•
Symbol
•
Instance
There are some relationships between the classifications. For example:
•
Distinguish different kinds of FamilyInstances by the category. Items such as structural
columns are in the Structural Columns category, beams and braces are in the Structural
Framing category, and so on.
•
Differentiate structural FamilyInstance Elements by the symbol.
5.2.1
Categories
Category represents the category or subcategory to which an Element belongs. It is used to
identify the inferred Element type. For example, anything in the walls Category is considered a
wall. Other categories include doors and rooms.
Categories are the most general class. The Categories object is a map that contains all Category
objects in the document and is subdivided into the following:
Revit 2008 API User Manual
62