{"categories":{"assemblies.dtcg":{"$description":"BIM ASSEMBLIES token category — anchored to IFC 4.3 IfcElementAssembly. Hierarchical compositions of elements.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"assemblies":{"element_assembly":{"$type":"bim.entity","$value":{"description":"Decomposable element comprising multiple sub-elements (truss, frame, ladder, slab system). Use for BOM-style hierarchies.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcElementAssembly.htm","ifc_class":"IfcElementAssembly"}},"furnishing_element":{"$type":"bim.entity","$value":{"description":"Tenant fixtures and furnishings. Particularly relevant for FM workflows over commercial leasing.","ifc_class":"IfcFurnishingElement"}},"geographic_element":{"$type":"bim.entity","$value":{"description":"Site-scale features: trees, parking aisles, signage. Useful for property-manager BIM where the building exists within site context.","ifc_class":"IfcGeographicElement"}}}}},"elements.dtcg":{"$description":"BIM ELEMENTS token category — anchored to IFC 4.3 IfcBuiltElement family. The walls, slabs, columns, beams, doors, windows, roofs, stairs.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"elements":{"beam":{"$type":"bim.entity","$value":{"description":"Horizontal structural support.","ifc_class":"IfcBeam","uniclass":"EF_20_25"}},"column":{"$type":"bim.entity","$value":{"description":"Vertical structural support.","ifc_class":"IfcColumn","uniclass":"EF_25_30"}},"covering":{"$type":"bim.entity","$value":{"description":"Floor / wall / ceiling covering element.","ifc_class":"IfcCovering","uniclass":"EF_25"}},"door":{"$type":"bim.entity","$value":{"description":"Door element. References its host wall via IfcRelFillsElement.","ifc_class":"IfcDoor","uniclass":"EF_25_30_25"}},"railing":{"$type":"bim.entity","$value":{"description":"Railing or balustrade element.","ifc_class":"IfcRailing","uniclass":"EF_25_60_70"}},"roof":{"$type":"bim.entity","$value":{"description":"Roof element — composite of slabs, plates, beams typically.","ifc_class":"IfcRoof","uniclass":"EF_30"}},"slab":{"$type":"bim.entity","$value":{"description":"Horizontal element forming floor, roof, or landing. SlabType disambiguates floor vs roof vs landing.","ifc_class":"IfcSlab","uniclass":"EF_20_10"}},"stair":{"$type":"bim.entity","$value":{"description":"Stair element. Decomposed into IfcStairFlight + IfcRailing children.","ifc_class":"IfcStair","uniclass":"EF_25_60_92"}},"wall":{"$type":"bim.entity","$value":{"description":"Vertical separating element. The most common element type in residential and commercial BIM models.","ifc_class":"IfcWall","ifc_subtype":"IfcWallStandardCase","uniclass":"EF_25_10"}},"window":{"$type":"bim.entity","$value":{"description":"Window element. References its host wall via IfcRelFillsElement.","ifc_class":"IfcWindow","uniclass":"EF_25_30_95"}}}}},"identity-codes.dtcg":{"$description":"BIM IDENTITY+CODES token category — anchored to IFC 4.3 IfcClassificationReference + IfcConstraint. Sub-agent A merged Identity + Codes onto a single classification axis.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"classifications":{"masterformat":{"$type":"bim.classification.system","$value":{"description":"Specifications-section-oriented classification used in US construction documents. Cross-mapped to Uniclass / OmniClass.","name":"MasterFormat 2020","publisher":"CSI, USA","uri":"https://www.csiresources.org/standards/masterformat"}},"omniclass":{"$type":"bim.classification.system","$value":{"description":"North-American counterpart to Uniclass. Cross-mapped at runtime via service-codes.","name":"OmniClass","publisher":"Construction Specifications Institute (CSI), USA","uri":"https://www.csiresources.org/standards/omniclass"}},"uniclass_2015":{"$type":"bim.classification.system","$value":{"description":"The classification floor for project-bim. All elements receive a Uniclass 2015 reference at minimum; deployment-specific classifications layer on top.","name":"Uniclass 2015","publisher":"NBS, UK","tables":["Co","EF","Ss","Pr","PM","PC","PE","FI","Ac","SL","Ro","Pm","Ma"],"uri":"https://www.thenbs.com/our-tools/uniclass"}}},"identity":{"classification_reference":{"$type":"bim.classification","$value":{"description":"Reference into a classification system (Uniclass 2015, OmniClass, MasterFormat, UniFormat II, custom city codes). Carries Identification + Name + Source URI.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcClassificationReference.htm","ifc_class":"IfcClassificationReference"}},"constraint":{"$type":"bim.constraint","$value":{"description":"Restriction governing a property or relationship. The IFC entity used by the City-Code-as-Composable-Geometry encoding to attach jurisdictional rules to specific element classes or property sets.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcConstraint.htm","ifc_class":"IfcConstraint"}},"global_id":{"$type":"bim.identity","$value":{"description":"22-character base-64 encoded GUID. The authoritative stable identifier for IFC entities; survives schema migrations IFC 2x3 → 4 → 4.3.","field":"GlobalId","ifc_class":"IfcRoot"}}}}},"materials.dtcg":{"$description":"BIM MATERIALS token category — anchored to IFC 4.3 IfcMaterial + bSDD URI references. Pset_Material* property sets.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"materials":{"material":{"$type":"bim.entity","$value":{"description":"Single-component material. References bSDD URI for canonical classification (Uniclass Pm, OmniClass material classes, MasterFormat).","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcMaterial.htm","ifc_class":"IfcMaterial"}},"material_constituent_set":{"$type":"bim.entity","$value":{"description":"IFC 4 alternative to LayerSet for non-stacked composite materials (e.g., reinforced concrete = concrete + rebar).","ifc_class":"IfcMaterialConstituentSet"}},"material_layer":{"$type":"bim.entity","$value":{"description":"Single layer in a multi-layer wall / slab / roof assembly. Carries thickness + LayerSetName.","ifc_class":"IfcMaterialLayer"}},"material_layer_set":{"$type":"bim.entity","$value":{"description":"Ordered set of material layers comprising an element (e.g., wall: gypsum + insulation + brick).","ifc_class":"IfcMaterialLayerSet"}}},"psets":{"Pset_MaterialCommon":{"$type":"bim.pset","$value":{"MassDensity":"IfcMassDensityMeasure","MolecularWeight":"IfcMassMeasure","Porosity":"IfcNormalisedRatioMeasure"}},"Pset_MaterialMechanical":{"$type":"bim.pset","$value":{"DynamicViscosity":"IfcDynamicViscosityMeasure","PoissonRatio":"IfcPositiveRatioMeasure","ShearModulus":"IfcModulusOfElasticityMeasure","ThermalExpansionCoefficient":"IfcThermalExpansionCoefficientMeasure","YoungModulus":"IfcModulusOfElasticityMeasure"}},"Pset_MaterialThermal":{"$description":"Thermal property set — relevant to energy performance and ASHRAE / Passivhaus / NZEB workflows.","$type":"bim.pset","$value":{"SpecificHeatCapacity":"IfcSpecificHeatCapacityMeasure","ThermalConductivity":"IfcThermalConductivityMeasure","ThermalTransmittance":"IfcThermalTransmittanceMeasure"}}}}},"performance.dtcg":{"$description":"BIM PERFORMANCE token category — anchored to IFC 4.3 IfcPropertySet + IfcQuantitySet. Energy / thermal / acoustic / fire properties.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"performance":{"property_set":{"$type":"bim.entity","$value":{"description":"Generic property set attached to an IFC entity. Pset_* templates are the conventional vocabulary.","ifc_class":"IfcPropertySet"}},"quantity_set":{"$type":"bim.entity","$value":{"description":"Measured quantities (area, volume, length, weight) attached to an element.","ifc_class":"IfcElementQuantity"}}},"psets":{"Pset_DoorCommon":{"$type":"bim.pset","$value":{"AcousticRating":"IfcLabel","FireExit":"IfcBoolean","FireRating":"IfcLabel","Reference":"IfcIdentifier","SecurityRating":"IfcLabel"}},"Pset_SpaceCommon":{"$description":"Space common properties — used by both BIM authoring AND lease-register workflows. The convergence channel between BIM and rent-roll data.","$type":"bim.pset","$value":{"Category":"IfcLabel","GrossPlannedArea":"IfcAreaMeasure","HandicapAccessible":"IfcBoolean","NetPlannedArea":"IfcAreaMeasure","PubliclyAccessible":"IfcBoolean","Reference":"IfcIdentifier"}},"Pset_WallCommon":{"$type":"bim.pset","$value":{"AcousticRating":"IfcLabel","FireRating":"IfcLabel","IsExternal":"IfcBoolean","LoadBearing":"IfcBoolean","Reference":"IfcIdentifier","ThermalTransmittance":"IfcThermalTransmittanceMeasure"}}},"quantities":{"Qto_SpaceBaseQuantities":{"$type":"bim.quantity_set","$value":{"FinishCeilingHeight":"IfcQuantityLength","FinishFloorHeight":"IfcQuantityLength","GrossFloorArea":"IfcQuantityArea","GrossPerimeter":"IfcQuantityLength","GrossVolume":"IfcQuantityVolume","GrossWallArea":"IfcQuantityArea","Height":"IfcQuantityLength","NetFloorArea":"IfcQuantityArea","NetPerimeter":"IfcQuantityLength","NetVolume":"IfcQuantityVolume","NetWallArea":"IfcQuantityArea"}},"Qto_WallBaseQuantities":{"$type":"bim.quantity_set","$value":{"GrossSideArea":"IfcQuantityArea","GrossVolume":"IfcQuantityVolume","Height":"IfcQuantityLength","Length":"IfcQuantityLength","NetSideArea":"IfcQuantityArea","NetVolume":"IfcQuantityVolume","Width":"IfcQuantityLength"}}}}},"relationships.dtcg":{"$description":"BIM RELATIONSHIPS token category — anchored to IFC 4.3 IfcRel* relationship entities. Sub-agent A renamed 'Connections' to 'Relationships' to better match IFC vocabulary.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"relationships":{"aggregates":{"$type":"bim.relationship","$value":{"description":"Hierarchical decomposition. IfcSite aggregates IfcBuilding, IfcBuilding aggregates IfcBuildingStorey, IfcStair aggregates IfcStairFlight + IfcRailing.","ifc_class":"IfcRelAggregates"}},"associates_classification":{"$type":"bim.relationship","$value":{"description":"Element ↔ classification system link. Uniclass / OmniClass / MasterFormat references attach via this relationship.","ifc_class":"IfcRelAssociatesClassification"}},"associates_material":{"$type":"bim.relationship","$value":{"description":"Element ↔ material set link. The doorway through which service-materials joins service-buildings at runtime.","ifc_class":"IfcRelAssociatesMaterial"}},"connects_path_elements":{"$type":"bim.relationship","$value":{"description":"Wall-to-wall corner connectivity. Linear-element junction relationships.","ifc_class":"IfcRelConnectsPathElements"}},"contained_in_spatial_structure":{"$type":"bim.relationship","$value":{"description":"Element-to-spatial-container link. The most common relationship — every element belongs to exactly one spatial container (typically an IfcBuildingStorey).","ifc_class":"IfcRelContainedInSpatialStructure"}},"defines_by_properties":{"$type":"bim.relationship","$value":{"description":"Element ↔ Pset_* property set link. The carrier of all per-element property data.","ifc_class":"IfcRelDefinesByProperties"}},"fills_element":{"$type":"bim.relationship","$value":{"description":"Door/window filling its host wall opening. Authoritative parent-child linkage for openings.","ifc_class":"IfcRelFillsElement"}},"voids_element":{"$type":"bim.relationship","$value":{"description":"Opening element subtraction relationship. The parent of fills_element.","ifc_class":"IfcRelVoidsElement"}}}}},"spatial.dtcg":{"$description":"BIM SPATIAL token category — anchored to IFC 4.3 IfcSpatialElement entity hierarchy. Site / Building / Storey / Space taxonomy.","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"spatial":{"building":{"$type":"bim.entity","$value":{"description":"A whole building. Composed within an IfcSite. May contain one or more IfcBuildingStorey.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcBuilding.htm","ifc_class":"IfcBuilding","uniclass":"Co_25"}},"facility":{"$type":"bim.entity","$value":{"description":"IFC 4.3 introduced facilities for non-building infrastructure — bridges, roads, rail, ports, waterways. Track but treat as out-of-scope at v0.0.1; v0.0.2+ as infrastructure expands.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcFacility.htm","ifc_class":"IfcFacility"}},"site":{"$description":"IFC Site — geographic land parcel; authoritative spatial root.","$type":"bim.entity","$value":{"description":"The geographic site or land parcel containing one or more buildings. Authoritative spatial root.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcSite.htm","ifc_class":"IfcSite","uniclass":"Co"}},"space":{"$type":"bim.entity","$value":{"description":"A bounded volume within a storey. Rooms, corridors, voids, exclusion zones (the City-Code-as-Composable-Geometry channel for jurisdictional fragments).","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcSpace.htm","ifc_class":"IfcSpace","uniclass":"SL"}},"storey":{"$type":"bim.entity","$value":{"description":"A floor or level within a building. The default expansion target for SpatialTree per BB.4 — every AEC practitioner navigates at storey level first.","ifc_anchor":"https://standards.buildingsmart.org/IFC/RELEASE/IFC4_3/HTML/lexical/IfcBuildingStorey.htm","ifc_class":"IfcBuildingStorey","uniclass":"Co_25_50"}}}}},"systems.dtcg":{"$description":"BIM SYSTEMS token category — anchored to IFC 4.3 IfcDistributionElement (mechanical, electrical, plumbing systems).","$schema":"https://design-tokens.github.io/community-group/format/","bim":{"systems":{"cable":{"$type":"bim.entity","$value":{"description":"Electrical cable segment.","ifc_class":"IfcCableSegment","uniclass":"Ss_70"}},"distribution_system":{"$type":"bim.entity","$value":{"description":"Logical grouping of MEP elements forming a single system (e.g., 'Heating Loop A').","ifc_class":"IfcDistributionSystem"}},"duct":{"$type":"bim.entity","$value":{"description":"HVAC duct segment.","ifc_class":"IfcDuctSegment","uniclass":"Ss_65"}},"flow_terminal":{"$type":"bim.entity","$value":{"description":"Distribution terminal — outlet, fixture, sensor, light fitting. Specialised by IfcDistributionFlowElement subclasses.","ifc_class":"IfcFlowTerminal"}},"pipe":{"$type":"bim.entity","$value":{"description":"Plumbing or fluid pipe segment.","ifc_class":"IfcPipeSegment","uniclass":"Ss_55"}}}}}},"schema":"dtcg-bim-bundle-v1","theme":"pointsav-brand"}