vocabulary: '0.1' generated: '2026-09-04' method: derived source: >- https://brickschema.org/schema/1.4.4/Brick.ttl (fetched 2026-09-04, HTTP 200, 1,749,633 bytes) — terms, counts and definitions extracted from the published Turtle distribution; definitions are the ontology's own skos:definition strings, quoted verbatim. info: title: Brick Ontology Vocabulary namespace: https://brickschema.org/schema/Brick# prefix: brick version: 1.4.4 released: '2025-05-02' license: BSD-3-Clause created: '2026-09-04' modified: '2026-09-04' description: >- Brick is an open-source ontology that standardizes semantic descriptions of the physical, logical and virtual assets in buildings and the relationships between them. It is expressed in RDF/OWL with SHACL shapes, and since v1.2 every version shares one unversioned namespace so a model can be upgraded by loading a newer graph rather than rewriting entity IRIs. counts: brick_terms: 1626 owl_classes: 1428 object_properties: 79 datatype_properties: 7 point_subclasses: 935 equipment_subclasses: 330 location_subclasses: 108 collection_subclasses: 44 root_classes: - id: Entity iri: https://brickschema.org/schema/Brick#Entity label: Entity definition: The root class of the Brick class hierarchy; every Brick concept is an Entity. - id: Point iri: https://brickschema.org/schema/Brick#Point label: Point definition: >- A source of telemetry or a control target in a building system — sensors, setpoints, commands, status and alarm points. Brick 1.4.4 defines 935 Point subclasses. disjoint_with: [Equipment, Location, Substance, Quantity, Collection, EntityProperty] - id: Equipment iri: https://brickschema.org/schema/Brick#Equipment label: Equipment definition: >- devices that serve all or part of the building and may include electric power, lighting, transportation, or service water heating, including, but not limited to, furnaces, boilers, air conditioners, heat pumps, chillers, water heaters, lamps, luminaires, ballasts, elevators, escalators, or other devices or installations. - id: Location iri: https://brickschema.org/schema/Brick#Location label: Location definition: A physical or logical place in a building — site, building, floor, room, zone, space. - id: Collection iri: https://brickschema.org/schema/Brick#Collection label: Collection definition: A grouping of Brick entities, such as a system, loop or point collection. - id: Measurable iri: https://brickschema.org/schema/Brick#Measurable label: Measurable definition: The branch covering Substances and Quantities that Points measure or Equipment moves. - id: Tag iri: https://brickschema.org/schema/Brick#Tag label: Tag definition: An atomic descriptor attached to a class or entity; Brick classes carry tag sets that support inference from tag-only metadata. - id: EntityPropertyValue iri: https://brickschema.org/schema/Brick#EntityPropertyValue label: EntityPropertyValue definition: The value object attached to an entity by an entity property (area, capacity, phase count, coordinates). - id: Class iri: https://brickschema.org/schema/Brick#Class label: Class definition: Meta-class marking the members of the Brick class hierarchy. relationships: - id: hasPoint label: Has point inverse: isPointOf definition: >- The subject has a source of telemetry identified by the object. In some systems the source of telemetry may be represented as a digital/analog input/output point - id: isPointOf label: Is point of inverse: hasPoint definition: >- The subject is a source of telemetry related to the object. In some systems the source of telemetry may be represented as a digital/analog input/output point - id: hasPart label: Has part inverse: isPartOf definition: The subject is composed in part of the entity given by the object - id: isPartOf label: Is part of inverse: hasPart - id: feeds label: Feeds inverse: isFedBy definition: >- The subject is upstream of the object in the context of some sequential process; some media is passed between them - id: isFedBy label: Is fed by inverse: feeds - id: hasLocation label: Has location inverse: isLocationOf definition: Subject is physically located in the location given by the object - id: isLocationOf label: Is location of inverse: hasLocation definition: Subject is the physical location encapsulating the object - id: meters label: meters inverse: isMeteredBy definition: Indicates the entity whose consumption/production of some substance is measured by this meter. - id: isMeteredBy label: is metered by inverse: meters definition: >- Indicates the meter measuring the consumption/production of some substance by the subject entity - id: hasTag label: Has tag inverse: isTagOf definition: The subject has the given tag - id: hasInputSubstance label: Has input substance definition: The subject receives the given substance as an input to its internal process - id: hasOutputSubstance label: Has output substance definition: The subject produces or exports the given substance from its internal process - id: hasUnit label: Has unit definition: >- The QUDT unit associated with this Brick entity (usually a Brick Point instance or Entity Property) - id: hasQUDTReference label: Has QUDT reference definition: Points to the relevant QUDT definition - id: isReplacedBy label: Is replaced by definition: >- Points a retired or renamed Brick term at its successor — the ontology's own in-graph deprecation signal. - id: aliasOf label: aliasOf definition: Links a Brick class to an equivalent class in an aligned external ontology. external_namespaces: - prefix: s223 uri: http://data.ashrae.org/standard223# note: ASHRAE Standard 223P semantic data model. - prefix: rec uri: https://w3id.org/rec# note: RealEstateCore — vendored into the distribution and aligned class-by-class. - prefix: qudt uri: http://qudt.org/schema/qudt/ note: QUDT quantities, units and dimensions; Brick points carry qudt:hasQuantityKind and units. - prefix: sh uri: http://www.w3.org/ns/shacl# note: SHACL — Brick ships NodeShapes and PropertyShapes alongside the class definitions. - prefix: sosa uri: http://www.w3.org/ns/sosa/ note: W3C/OGC SOSA sensor/observation vocabulary. - prefix: bacnet uri: http://data.ashrae.org/bacnet/2020# note: "ASHRAE BACnet — used by the ref: external-reference vocabulary." - prefix: tag uri: https://brickschema.org/schema/BrickTag# note: Brick's own tag namespace. - prefix: ref uri: https://brickschema.org/schema/Brick/ref# note: Brick external-reference vocabulary for binding entities to BACnet/timeseries/Haystack sources. distributions: - format: turtle url: https://brickschema.org/schema/1.4.4/Brick.ttl status: 200 bytes: 1749633 - format: json-ld url: https://brickschema.org/schema/1.4.4/Brick.jsonld status: 200 bytes: 6417305 - format: rdf-xml url: https://brickschema.org/schema/Brick status: 200 note: >- Serves RDF/XML as application/octet-stream; no content negotiation — the same body is returned for text/turtle, application/ld+json and application/rdf+xml Accept headers. - format: turtle url: https://github.com/BrickSchema/Brick/releases/download/nightly/Brick.ttl note: >- Nightly build; the release assets are Brick.ttl, Brick+imports.ttl, Brick-only.ttl and Brick+extensions.ttl. maintainers: - FN: Kin Lane email: info@apievangelist.com