About Property Set Data and Schedule Tables in Projects

Schedules are tables that list specific information about selected objects in your building model. You can create different types of schedules by attaching property set data to objects and object styles, and then extracting and displaying the data in a schedule table.

You can schedule each instance of each external reference individually. For example, if you have an element that contains a typical door, you can reference that door element five times into a construct. When you create a door schedule in the construct, all five instances of the door element are scheduled independently and can have unique data.

When you work in a non-project environment, you typically attach property data to objects directly in the drawing. When you use the Drawing Management feature, you work extensively with external references and often tag objects in xrefs.

• Attach property set data to objects in external references: You can, for example, reference a construct into a view, and attach property sets in the view to the objects from the referenced construct. Attaching property sets to external references works for any nested levels, but it is recommended that you attach data while in a view drawing.
• Attach different property sets to individual instances of an external reference within a host drawing: You can reference the same door multiple times into the same host drawing and attach different property sets to each instance of the door. That way, you can reference the same typical element multiple times in a building and schedule each one differently.
• Access property sets from the source element or construct drawing as well as property sets from views or sheets: You can create a property set with properties in the element drawing and another property set in the sheet and schedule both in the sheet.

Numbering a Door in a Project

The following example shows how you can define property data that combines object properties with project properties. The example uses space information to show how you could use project and formula property definitions. The following diagram shows how a space number can be built up from information on the space and in the project.

Value	Property Set Definition	Property Definition	Description
2	Space	LevelNumber	A project property definition, getting the Level ID for the object for the current project
01	Space	BaseNumber	A manual auto-incrementing property definition
201	Space	RoomNumber	A formula property definition, with the formula [LevelNumber][BaseNumber]