exported
necessary
housing
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Housing
Generated on 2026-05-04
Natural Language Definition
EN
An Assembly that bears both an EnclosureFunction and a SupportFunction, providing protective boundaries around internal components while structurally supporting them.
PT-BR
Um Assembly que possui tanto uma EnclosureFunction quanto uma SupportFunction, fornecendo limites protetivos ao redor de componentes internos enquanto os suporta estruturalmente.
Formal Axioms
Semi-formal (Aristotelian)
Housing SubClassOf Assembly and (bearerOf some EnclosureFunction) and (bearerOf some SupportFunction)
First-Order Logic Theory
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▸ Stored override
∀x (Housing(x) → Assembly(x) ∧ ∃f₁(EnclosureFunction(f₁) ∧ bearerOf(x,f₁)) ∧ ∃f₂(SupportFunction(f₂) ∧ bearerOf(x,f₂)))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: Housing
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000500 rdf:type owl:Class ; # EnclosureFunction
rdfs:subClassOf iof-core:DesignedFunction ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000501 # EnclosureProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000501 # EnclosureProcess
] ;
rdfs:label "enclosure function"@en ;
rdfs:label "função de proteção e invólucro"@pt-br ;
iof-av:naturalLanguageDefinition "A DesignedFunction that is realized in an EnclosureProcess and that consists in providing a protective boundary that separates an internal space from the external environment while providing structural support for contained components."@en ;
skos:definition "A DesignedFunction that is realized in an EnclosureProcess and that consists in providing a protective boundary that separates an internal space from the external environment while providing structural support for contained components."@en .
### Process type
:COPI_0000501 rdf:type owl:Class ; # EnclosureProcess
rdfs:subClassOf iof-core:PlannedProcess ;
rdfs:label "enclosure process"@en ;
rdfs:label "processo de proteção e invólucro"@pt-br ;
iof-av:naturalLanguageDefinition "A PlannedProcess in which a housing artifact creates and maintains a protective boundary around internal components, simultaneously providing structural support and environmental separation."@en ;
skos:definition "A PlannedProcess in which a housing artifact creates and maintains a protective boundary around internal components, simultaneously providing structural support and environmental separation."@en .
:COPI_0000501 # EnclosureProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom iof-core:MaterialArtifact
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom iof-core:MaterialArtifact
] .
### Equipment universal: Housing
:COPI_0000297 rdf:type owl:Class ; # Housing
rdfs:subClassOf iof-core:Assembly ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000500 # EnclosureFunction
] ;
rdfs:label "housing"@en ;
rdfs:label "carcaça"@pt-br ;
iof-av:naturalLanguageDefinition "An Assembly that bears both an EnclosureFunction and a SupportFunction, providing protective boundaries around internal components while structurally supporting them."@en ;
skos:definition "An Assembly that bears both an EnclosureFunction and a SupportFunction, providing protective boundaries around internal components while structurally supporting them."@en ;
iof-av:naturalLanguageDefinition "Um Assembly que possui tanto uma EnclosureFunction quanto uma SupportFunction, fornecendo limites protetivos ao redor de componentes internos enquanto os suporta estruturalmente."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Housing SubClassOf Assembly and (bearerOf some EnclosureFunction) and (bearerOf some SupportFunction)"@en ;
iof-av:firstOrderLogicAxiom "∀x (Housing(x) → Assembly(x) ∧ ∃f₁(EnclosureFunction(f₁) ∧ bearerOf(x,f₁)) ∧ ∃f₂(SupportFunction(f₂) ∧ bearerOf(x,f₂)))"@en ;
iof-av:isPrimitive "true"^^xsd:boolean ;
iof-av:primitiveRationale "Constructive type based on physical configuration. Under OWA, sufficient conditions would force any assembly with enclosure and support functions to be classified as a standard housing, potentially misclassifying specialized equipment with housing-like properties but different maintenance categories."@en ;
skos:definition "[ISO 15926-4] A <HOUSING> is an <ARTEFACT> and an <ENCLOSURE> and a <SUPPORT> that, next to separation, also provides support"@en ;
skos:definition "[CFIHOS] An enclosure that also provides support."@en ;
skos:definition "[SLB Glossary] The outside steel case of a cartridge or a sonde in a wireline logging tool."@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
EnclosureFunction
⊑ DesignedFunction
Realized in
EnclosureProcess
⊑ PlannedProcess
The EnclosureFunction is identity-giving because all sources emphasize housing as fundamentally providing enclosure with support. This differs from simple containment (like a vessel) by combining boundary protection with structural support capability.
2
Genus Determination
Assembly
bfo:Object (BFO_0000030)
Causally unified material artefact composed of physically connected,
separable MaterialComponent parts. Satisfies
Assembly ⊑ MaterialArtifact ⊑ bfo:Object.
Housing is an Assembly because it is a causally unified artifact designed to contain and support other components. It has physically connected parts (walls, supports, mounting features) that can be disassembled but function as a single maintainable unit. No more specific genus like 'Enclosure' exists in the already-enriched classes, so Assembly is the most appropriate genus.
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
No universal parts can be identified for housing at this general level. Specific housing subtypes (bearing housing, instrument housing, etc.) would have type-specific parts, but the general housing concept is too broad to specify universal components. No component terms are provided in the Known Component Terms list.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
MaterialArtifact
— components requiring enclosure and support
Outputs (O)
MaterialArtifact
— same components but now enclosed and supported
Transformation (T)
components are enclosed within protective boundaries and provided with structural support
Housing processes transform unprotected/unsupported components into protected/supported components by providing enclosure and structural support. This grounds disjointness with other assemblies that have different transformation signatures.
5
Axiom Mode Decision
Necessary conditions only
— modelled as a primitive universal
(⊑, SubClassOf). Identity is grounded in designed
function and cannot be reduced to a property checklist.
Constructive type based on physical configuration. Under OWA, sufficient conditions would force any assembly with enclosure and support functions to be classified as a standard housing, potentially misclassifying specialized equipment with housing-like properties but different maintenance categories.
Cross-Standard Observations
SLB definition is domain-specific (wireline logging) while ISO 15926-4 and CFIHOS definitions are generic. All agree on the core concept of enclosure with support, but differ significantly in scope and application context.
