Standard IFC
Psets
- Standard IFC property sets
- Used across IFC workflows
- Store common model information
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IFC+SG · IFC Structure
Understanding IFC+SG Structure
Learn how IFC models are organised using IFC spatial structure and property sets used in IFC+SG submissions.
This page focuses on two concepts new users need first: how the IFC model is organised, and where IFC+SG information is attached to IFC objects.
Spatial structure
Psets / SGPsets
Discipline examples
Spatial
IfcSite
Project location
Spatial
IfcBuilding
Building or block
Level
IfcBuildingStorey
Storey context
Property
Pset / SGPset
Attached data
Object
IfcElement
Model item
IFC+SG
Spatial structure and property data
01 · Spatial Structure
How IFC organises a model
IFC uses spatial structure to organise a project into site, building, storey, and space. This helps viewers and submission systems understand where model elements belong.
Recommended reading:
For CORENET X submission, certain information is required to be attached at specific spatial structure levels. Users are recommended to understand the IFC+SG Block Mechanism and IFC modelling workflow recommendations before submission in the IFC Modelling Workflow Recommendations page.
IfcProject
Overall project container
IfcSite
Development site or project site
IfcBuilding
Building, block, or building grouping
IfcBuildingStorey
Level or storey where elements are placed
IfcSpace
Room, unit, or defined spatial area
02 · Property Sets
How IFC elements store information
IFC stores information using property sets. IFC+SG uses standard IFC Psets and Singapore-specific SGPsets for CORENET X submission requirements.
IFC+SG
SGPsets
- Singapore-specific property sets
- Used for CORENET X submission
- Store regulatory information required in IFC+SG
Key point: IFC+SG data is not a single top-down hierarchy. Spatial structure organises the model. Property sets store information attached to IFC objects.
03 · Examples by Discipline
See how IFC+SG structure applies across disciplines
Select a discipline below to view how IFC+SG data can look in Architecture, C&S, and M&E models.
You now have a better understanding of IFC+SG structure
Continue with the IFC+SG Onboarding Checklist to prepare your model, software setup, export workflow, and submission process for CORENET X.