Masterspec

4.0 Object Properties & Property Grouping

This section of the standard defines the properties that should be assigned to a BIM object. It also discusses the grouping of properties and the assignment of properties to object types or object instances.

4.10 Property grouping (Property sets)

   4.10 Property grouping (Property sets)
This sub-section of the standard defi nes the requirements for grouping properties into property sets and the use of property sets. This is to facilitate the metadata being in a format consistent with IFC. Not all BIM authoring systems fully support the concept of property sets in their BIM objects, for example Revit only allows the user to assign object properties to hard-coded groups. However, the shared parameter file in Revit does assign a group to each property, which is an equivalent concept to property sets.
 

 4.10.1
Property grouping requirements
 

Properties shall be grouped together into property sets (groups) for ease of property management, navigation and display.
Property sets shall be named in accordance with clause 2.4.
Properties shall be grouped logically and consistently, across all objects, based on their source and intended use/function.
If user edited/created property sets are not supported in the BIM authoring system being used, properties shall be assigned to the most relevant hard-coded property group within the BIM authoring system.

 


 4.10.2
IFC property sets
 

IFC properties shall be grouped in their relevant IFC property sets (Pset_’s and Qto_’s).


 4.10.3
Source of properties
 

Properties from any source other than IFC, shall be grouped in a property set, named to clearly identify the source of the properties. For example, COBie_, ANZRS_.
If user edited/created property sets are not supported in the BIM authoring system being used, a suffix can be added to each property name to identify its source, see clause 2 3 4.

 

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