BIM Objects
Spatial
Spaces, levels (IfcBuildingStorey), buildings, sites, and zones
› IfcSpatialElement
Elements
Walls, slabs, columns, beams, doors, windows, and other built elements
› IfcBuiltElement
Systems
HVAC, plumbing, electrical distribution, and fire protection systems
› IfcDistributionElement
Materials
Material definitions with bSDD URI references and Pset_Material* property sets
› IfcMaterial
Assemblies
Composite element assemblies — curtain walls, stair assemblies, roof systems
› IfcElementAssembly
Performance
Property sets expressing thermal, acoustic, structural, and fire performance
› IfcPropertySet
Identity + Codes
Uniclass, OmniClass, MasterFormat, and bSDD classification references
› IfcClassificationReference
Relationships
Aggregation, containment, nesting, and constraint relationship templates
› IfcRel*
Key Plans
Leasable spatial programs with zone depths, furniture programs, and compliance data
› IfcSpace