SIST EN 17549-2:2023
(Main)Building information modelling - Information structure based on EN ISO 16739 1 to exchange data templates and data sheets for construction objects - Part 2: Configurable construction objects and requirements
Building information modelling - Information structure based on EN ISO 16739 1 to exchange data templates and data sheets for construction objects - Part 2: Configurable construction objects and requirements
The digital transformation of the construction industry includes also the digital transformation of the supply chaine of construction products. With EN ISO 16739-1 exists an open language to design, transfer and maintain construction models. The construction models (e.g. of a building) contain a digital twin of real-life products. The data of these products should be transported in a digital format on the way from the factory to the building owner.
This product data should be expressed also in an easy and open way. The creators of product data files should be able to do this manually or automatically, as they like it. The users of product data should be able to use it to:
• Express their requirements related to products
• Describe configurable products
• Import product data easily in the BIM models at any stage of the project (design, construction, operation)
• Export product data easily from the BIM models at any stage of the project (design, construction, operation)
These scenarios fit in the business models of manufacturers, planners, construction companies and facility managers.
The working group 4 of CEN-TC442 has published proposals for creating new work items in the sector of CEN regarding the storage and the transport of product data in the sector of building information modelling (BIM):
EN ISO 16739-1:2018: Industry Foundation Classes (IFC) for data sharing in the construction and facility management industries- Part 1: Data schema
EN ISO 12006-3: Building construction – Organization of information about construction works – Part 3: Framework for object-oriented information
prEN ISO 23386: Building information modelling and other digital processes used in Construction – Methodology to describe, author and maintain properties in interconnected dictionaries
prEN ISO 23387: Data templates for construction works entities, Part 1: Objects, collections, and relationships defining the general structure of data templates
This standard defines a format to negotiate product data templates, express requirements and describe configurable products and therefore fills the missing link between the product data sources (e.g. catalogs) from the manufacturers and the BIM models of the designers, builders, and owners.
Building Information Modeling - Datenstruktur für den Austausch von Produktdatenvorlagen und Produktdatenblättern nach EN-ISO 16739-1 - Teil 2: Anforderungen und konfigurierbare Produkte
Modélisation des informations de la construction (BIM) - Structure des informations basée sur l’EN ISO 16739-1 pour l’échange de modèles de données et de feuilles de données pour les objets de construction - Partie 2 : Objets de construction configurables et exigences
L’EN ISO 16739 1:2020 offre un langage ouvert pour concevoir, transférer et tenir à jour des modèles de construction. Le présent document constitue une simplification de l’EN ISO 16739 1:2020 du point de vue des technologies de l’information et, en tant que tel, constitue une définition de vue de modèle (MVD). Il est axé sur les classes de base et s’appuie sur des dictionnaires de données externes pour décrire la sémantique métier.
Grâce à cette MVD, plusieurs objectifs de la modélisation des informations de la construction (BIM) peuvent être atteints :
des implémentations moins complexes sans réduction de la fonctionnalité ;
une intégration flexible de la sémantique métier conduisant à une interopérabilité plus complète pour l’utilisateur final ;
la prise en charge de l’ingénierie concourante en utilisant les mécanismes déjà existants.
Les utilisateurs des outils basés sur cette MVD peuvent :
utiliser leur sémantique métier spécifique grâce à l’utilisation de dictionnaires de données ;
exprimer leurs besoins et leurs propositions concernant les objets de construction ;
décrire des objets de construction paramétriques, ainsi que les objets ou produits de construction configurables ;
importer et exporter des données d’objets de construction dans des modèles BIM à n’importe quel stade du projet (conception, construction, exploitation) ;
décrire des devis quantitatifs (programmes de préconception, spécifications techniques, offres) ;
lancer des appels d’offres et acheter des objets de construction ;
vérifier que les objets de construction inclus dans un projet satisfont aux exigences décrites précédemment ;
décrire des catalogues de produits décrits à l’origine conformément à la Partie 1.
Ces scénarios s’inscrivent dans les modèles économiques des propriétaires, des concepteurs, des constructeurs, des fabricants et des gestionnaires d’installations.
Le présent document ne fournit aucun formulaire de données, car il se base sur l’hypothèse que ceux-ci sont déjà définis dans des dictionnaires de données conformes à l’EN ISO 12006 3.
Le présent document est uniquement axé sur le format des données échangées et non sur la manière de les traiter.
Informacijsko modeliranje gradenj - Podatkovna struktura za izmenjavo podatkovnih predlog in tehničnih listov gradnikov, ki temelji na EN ISO 16739-1 - 2. del: Zahteve in prilagodljivi gradniki
Digitalna preobrazba gradbene industrije vključuje tudi digitalizacijo dobavnih verig gradbenih proizvodov. S standardom EN ISO 16739-1 se vzpostavlja odprti jezik za načrtovanje, prenos in vzdrževanje gradbenih modelov. Gradbeni modeli (npr. za objekt) vsebujejo digitalni dvojček dejanskih proizvodov. Podatki o teh proizvodih naj se iz obrata do lastnika objekta prenesejo v digitalnem formatu
ter naj bodo izraženi na enostaven in odprt način. Priporočljivo je, da so ustvarjalci datotek s podatki o proizvodih sposobni to storiti ročno ali samodejno, kakor jim ustreza. Uporabniki podatkov o proizvodih naj bodo sposobni te podatke uporabiti za:
• izražanje svojih zahtev v zvezi s proizvodi;
• opisovanje proizvodov z možnostjo konfiguracije;
• enostavno uvažanje podatkov o proizvodih v modele informacijskega modeliranja gradenj (BIM) v kateri koli fazi projekta (načrtovanje, izdelava, izvedba);
• enostavno izvažanje podatkov o proizvodih iz modelov informacijskega modeliranja gradenj v kateri koli fazi projekta (načrtovanje, izdelava, izvedba).
Ti scenariji so združljivi s poslovnimi modeli proizvajalcev, načrtovalcev, gradbenih podjetij in upravljavcev objektov.
Delovna skupina 4 tehničnega odbora CEN-TC 442 je objavila predloge za oblikovanje novih delovnih elementov v sektorju CEN v zvezi s shranjevanjem in prenašanjem podatkov o proizvodih v sektor informacijskega modeliranja gradenj:
EN ISO 16739-1:2018: Temeljni industrijski razredi (IFC) za izmenjavo podatkov na področju gradbeništva in upravljanja objektov – 1. del: Shema podatkov
EN ISO 12006-3: Gradnja objektov – Organizacija podatkov o gradbenih delih – 3. del: Okvirna struktura objektno orientiranih podatkov
prEN ISO 23386: Informacijsko modeliranje gradenj in drugi digitalni procesi, ki se uporabljajo v gradbeništvu – Metodologija za vzpostavitev in vzdrževanje atributov v medsebojno povezanih podatkovnih slovarjih
prEN ISO 23387: Podatkovne predloge za gradbene subjekte, 1. del: Elementi, zbirke in razmerja, ki opredeljujejo splošno strukturo podatkovnih predlog
Ta standard določa obliko za urejanje predlog za podatke o proizvodih, navaja zahteve in opisuje proizvode z možnostjo konfiguracije, s tem pa zapolnjuje manjkajoči člen med viri podatkov o proizvodih (npr. katalogi) proizvajalcev in modeli informacijskega modeliranja gradenj projektantov, gradbenikov in lastnikov.
General Information
Standards Content (Sample)
SLOVENSKI STANDARD
SIST EN 17549-2:2023
01-julij-2023
Informacijsko modeliranje gradenj - Podatkovna struktura za izmenjavo
podatkovnih predlog in tehničnih listov gradnikov, ki temelji na EN ISO 16739-1 - 2.
del: Zahteve in prilagodljivi gradniki
Building information modelling - Information structure based on EN ISO 16739 1 to
exchange data templates and data sheets for construction objects - Part 2: Configurable
construction objects and requirements
Building Information Modeling - Datenstruktur für den Austausch von
Produktdatenvorlagen und Produktdatenblättern nach EN-ISO 16739-1 - Teil 2:
Anforderungen und konfigurierbare Produkte
Modélisation des informations de la construction (BIM) - Structure des informations
basée sur l’EN ISO 16739-1 pour l’échange de modèles de données et de feuilles de
données pour les objets de construction - Partie 2 : Objets de construction configurables
et exigences
Ta slovenski standard je istoveten z: EN 17549-2:2023
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
91.010.01 Gradbeništvo na splošno Construction industry in
general
SIST EN 17549-2:2023 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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SIST EN 17549-2:2023
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SIST EN 17549-2:2023
EN 17549-2
EUROPEAN STANDARD
NORME EUROPÉENNE
May 2023
EUROPÄISCHE NORM
ICS 35.240.67
English Version
Building information modelling - Information structure
based on EN ISO 16739 1 to exchange data templates and
data sheets for construction objects - Part 2: Configurable
construction objects and requirements
Modélisation des informations de la construction (BIM) Building Information Modeling - Datenstruktur für den
- Structure des informations basée sur l'EN ISO 16739- Austausch von Produktdatenvorlagen und
1:2020 pour l'échange de modèles de données et de Produktdatenblättern nach EN-ISO 16739-1 - Teil 2:
feuilles de données pour les objets de construction - Anforderungen und konfigurierbare Produkte
Partie 2 : Objets de construction configurables et
exigences
This European Standard was approved by CEN on 27 February 2023.
This European Standard was corrected and reissued by the CEN-CENELEC Management Centre on 10 May 2023.
CEN members are bound to comply with the CEN/CENELEC Internal Regulations which stipulate the conditions for giving this
European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references
concerning such national standards may be obtained on application to the CEN-CENELEC Management Centre or to any CEN
member.
This European Standard exists in three official versions (English, French, German). A version in any other language made by
translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC Management
Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and
United Kingdom.
EUROPEAN COMMITTEE FOR STANDARDIZATION
C O M I T É E U R O P É E N D E N O R M A L I S A T I O N
E U R O P Ä I S C H E S K O M I T E E F Ü R N O R M U N G
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2023 CEN All rights of exploitation in any form and by any means reserved Ref. No. EN 17549-2:2023 E
worldwide for CEN national Members.
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SIST EN 17549-2:2023
EN 17549-2:2023 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 9
2 Normative references . 9
3 Terms and definitions . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 11
4 Fundamental concepts and assumptions . 11
4.1 General. 11
4.2 Units . 18
4.2.1 General. 18
4.2.2 “IfcSIUnit definition” concept . 18
4.2.3 “IfcConversionBasedUnitWithOffset definition” concept . 18
4.2.4 “UnitsInContext prohibition” concept . 19
4.2.5 “Unit explicit definition” concept . 20
4.2.6 “IfcDerivedUnit definition” concept . 20
4.3 Data dictionaries . 20
4.3.1 General. 20
4.3.2 “IfcLibraryReference identification” concept . 21
4.3.3 “IfcLibraryReference attributes” concept . 21
4.4 Properties . 22
4.4.1 General. 22
4.4.2 “IfcSimpleProperty definition” concept . 23
4.4.3 “IfcSimpleProperty unique definition” concept. 23
4.4.4 “IfcSimpleProperty in property set” concept . 24
4.4.5 “IfcProperty single, table, reference, or complex” concept . 24
4.4.6 “IfcPropertySingleValue attributes” concept . 24
4.4.7 “IfcPropertyTableValue attributes” concept . 25
4.5 Dynamic properties . 26
4.5.1 General. 26
4.5.2 “IfcPropertyReferenceValue usage” concept . 26
4.5.3 “IfcProperty dependencies” concept . 26
4.6 Sets of properties . 29
4.6.1 General. 29
4.6.2 “IfcPropertySet definition” concept . 30
4.6.3 “IfcPropertySet unique definition” concept . 30
4.6.4 “IfcPropertySet allowed elements” concept . 31
4.6.5 “IfcPropertySet attributes” concept . 31
4.7 Objects . 32
4.7.1 General. 32
4.7.2 “IfcBuildingElementProxy definition” concept . 32
4.7.3 “IfcBuildingElementProxy unique definition” concept . 32
4.7.4 “IfcBuildingElementProxy as property sets” concept . 34
4.7.5 “IfcBuildingElementProxy as a system” concept . 34
4.7.6 “IfcBuildingElementProxy attributes” concept . 35
2
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SIST EN 17549-2:2023
EN 17549-2:2023 (E)
4.8 Object types . 36
4.8.1 General . 36
4.8.2 “IfcBuildingElementProxyType definition” concept . 37
4.8.3 “IfcBuildingElementProxyType unique definition” concept . 37
4.8.4 “IfcBuildingElementProxyType as property sets” concept . 38
4.8.5 “IfcBuildingElementProxyType as a system” concept . 38
4.8.6 “ApplicableOccurrence value” concept . 39
4.8.7 “IfcBuildingElementProxyType attributes” concept . 40
4.9 Semantic relationships . 40
4.9.1 General . 40
4.9.2 “IfcGroup definition” concept . 42
4.9.3 “IfcGroup unique definition” concept . 42
4.9.4 “IfcGroup as semantic relationship” concept . 43
4.10 Constraints . 45
4.10.1 General . 45
4.10.2 “ConstraintGrade value” concept . 46
4.10.3 “IfcConstraint target” concept . 47
4.10.4 “ObjectiveQualifier value” concept . 49
4.10.5 “DataValue value” concept . 50
4.10.6 “IfcConstraint definition” concept . 50
4.10.7 “IfcObjective attributes” concept . 51
4.10.8 “IfcMetric attributes” concept . 53
4.11 Context composition . 54
4.11.1 General . 54
4.11.2 “IfcProject allowed decompositions” concept . 54
4.11.3 “IfcBuilding allowed content” concept . 55
4.11.4 “IfcProject allowed declarations” concept . 56
4.11.5 “IfcProjectLibrary allowed declarations” concept. 56
4.12 Root . 57
4.12.1 “IfcRoot attributes” concept . 57
5 Core data schemas . 57
5.1 General . 57
5.2 IfcKernel . 58
5.2.1 General . 58
5.2.2 Types . 58
5.2.3 Entities . 59
5.2.4 Functions . 105
5.2.5 Rules – IfcSingleProjectInstance – Semantic definitions at the global rule . 106
5.3 IfcControlExtension – Entities – IfcRelAssociatesConstraint . 106
5.3.1 Semantic definitions at the entity . 106
5.3.2 Inherited definitions from supertypes . 106
5.3.3 Definitions applying to CODview2 . 107
5.4 IfcProductExtension . 108
5.4.1 Entities . 108
6 Shared element data schemas . 126
6.1 General . 126
6.2 IfcSharedBldgElements . 127
6.2.1 Types . 127
6.2.2 Entities . 127
7 Domain specific data schemas . 134
8 Resource definition data schemas . 134
3
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SIST EN 17549-2:2023
EN 17549-2:2023 (E)
8.1 General. 134
8.2 IfcActorResource . 134
8.2.1 Types . 134
8.2.2 Entities . 134
8.3 IfcConstraintResource . 138
8.3.1 Types . 138
8.3.2 Entities . 139
8.4 IfcCostResource . 146
8.4.1 General. 146
8.4.2 Types . 146
8.4.3 Entities . 147
8.5 IfcDateTimeResource . 148
8.5.1 Types . 148
8.6 IfcExternalReferenceResource . 148
8.6.1 Schema definition . 148
8.6.2 Types . 149
8.6.3 Entities . 149
8.7 IfcMeasureResource . 153
8.7.1 Types . 153
8.7.2 Entities . 156
8.7.3 Functions . 163
8.8 IfcPropertyResource . 163
8.8.1 Schema definition . 163
8.8.2 Types . 164
8.8.3 Entities . 164
8.9 IfcUtilityResource . 177
8.9.1 Schema definition . 177
8.9.2 Types . 177
8.9.3 Entities . 177
Annex A (normative) Computer interpretable listings – CODview2 long form schema . 181
Annex B (informative) Examples . 182
B.1 Preliminary examples . 182
B.1.1 Dimensions and units . 182
B.1.2 Data definition and data dictionaries: Properties and construction objects . 184
B.1.3 Dependencies between properties: IfcAppliedValue . 186
B.1.4 Dependencies between properties: JavaScript . 188
B.1.5 Constraints on values: IfcConstraint . 190
B.1.6 Semantic relationships: IfcGroup. 195
B.2 Use case examples . 197
B.2.1 Using requirements . 197
B.2.2 Check of the consistency between the objects included in a project and the
requirements defined in a previous phase . 199
B.2.3 Semantic, concurrent, and iterative definition of an object during design phases . 200
B.2.4 Product catalogue . 202
B.2.5 Search in a product catalogue . 207
B.2.6 Bills of quantities (pre-design programs, technical specifications, offers) . 208
B.2.7 Procurement and product purchase . 209
Bibliography . 212
4
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SIST EN 17549-2:2023
EN 17549-2:2023 (E)
European foreword
This document (EN 17549-2:2023) has been prepared by Technical Committee CEN/TC 442 “Building
Information Modelling (BIM)”, the secretariat of which is held by SN.
This European Standard shall be given the status of a national standard, either by publication of an
identical text or by endorsement, at the latest by November 2023, and conflicting national standards shall
be withdrawn at the latest by November 2023.
Attention is drawn to the possibility that some of the elements of this document may be the subject of
patent rights. CEN shall not be held responsible for identifying any or all such patent rights.
The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”,
“RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in CEN
Internal Regulation 2019, Part 3, clause 7.
SHALL is the strongest expression (Requirement)
MAY is to permit something
MUST means something to apply for legal reasons
CAN expresses a possibility
SHOULD is a recommendation
Requirements – shall, shall not
Recommendations – should, should not
Permission – may, need not
Possibility and capability – can, cannot
Any feedback and questions on this document should be directed to the users’ national standards body.
A complete listing of these bodies can be found on the CEN website.
According to the CEN-CENELEC Internal Regulations, the national standards organisations of the
following countries are bound to implement this European Standard: Austria, Belgium, Bulgaria, Croatia,
Cyprus, Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Iceland, Ireland,
Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway, Poland, Portugal, Republic of North
Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Türkiye and the United
Kingdom.
5
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SIST EN 17549-2:2023
EN 17549-2:2023 (E)
Introduction
This document describes and explains a subset of the schema provided by EN ISO 16739-1:2020; in
technical terms, this subset is a technical Model View Definition (MVD). It is given in Annex A of this
document. It aims to set a comprehensive structure to store and exchange construction object data. This
MVD is therefore called Construction Object Data View 2 or CODview2 for short.
It is intended for software vendors for the construction sector (planning, finance, legal, procurement,
construction management, design, construction process, commissioning and handover, after sales
service, maintenance, operation, repair and improvement, demolition) as well as professionals in this
sector using their software.
While “Building information modelling — Information structure based on EN ISO 16739-1:2020 to
exchange data templates and data sheets for construction objects — Part 1” focuses on data templates
and configured construction objects, this document includes the structures that will be used to:
• link the objects and properties to their semantic definitions through data dictionaries
• express requirements and describe configurable construction objects using declarative expressions
• organize the data exc
...
SLOVENSKI STANDARD
oSIST prEN 17549-2:2022
01-januar-2022
Informacijsko modeliranje gradenj - Informacijska struktura, ki temelji na EN ISO
16739-1, za izmenjavo podatkovnih predlog in podatkovnih listov za gradbene
objekte - 2. del: Prilagodljivi gradbeni objekti in zahteve
Building information modelling - Information structure based on EN ISO 16739 1 to
exchange data templates and data sheets for construction objects - Part 2: Configurable
construction objects and requirements
Building Information Modeling - Datenstruktur für den Austausch von
Produktdatenvorlagen und Produktdatenblättern nach EN-ISO 16739-1 - Teil 2:
Anforderungen und konfigurierbare Produkte
Modélisation des informations de la construction (BIM) - Structure des informations
basée sur l’EN ISO 16739-1 pour l’échange de modèles de données et de feuilles de
données pour les objets de construction - Partie 2 : Objets de construction configurables
et exigences
Ta slovenski standard je istoveten z: prEN 17549-2
ICS:
35.240.67 Uporabniške rešitve IT v IT applications in building
gradbeništvu and construction industry
91.010.01 Gradbeništvo na splošno Construction industry in
general
oSIST prEN 17549-2:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
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oSIST prEN 17549-2:2022
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oSIST prEN 17549-2:2022
DRAFT
EUROPEAN STANDARD
prEN 17549-2
NORME EUROPÉENNE
EUROPÄISCHE NORM
November 2021
ICS 35.240.67
English Version
Building information modelling - Information structure
based on EN ISO 16739 1 to exchange data templates and
data sheets for construction objects - Part 2: Configurable
construction objects and requirements
Building Information Modeling - Datenstruktur für den
Austausch von Produktdatenvorlagen und
Produktdatenblättern nach EN-ISO 16739-1 - Teil 2:
Anforderungen und konfigurierbare Produkte
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 442.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2021 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 17549-2:2021 E
worldwide for CEN national Members.
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oSIST prEN 17549-2:2022
prEN 17549-2:2021 (E)
Contents Page
European foreword . 5
Introduction . 6
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
3.1 Terms and definitions . 9
3.2 Abbreviated terms . 11
4 Fundamental concepts and assumptions . 11
4.1 General. 11
4.2 Units . 16
4.2.1 General. 16
4.2.2 IfcSIUnit definition . 16
4.2.3 IfcConversionBasedUnitWithOffset definition . 17
4.2.4 UnitsInContext prohibition . 18
4.2.5 Unit explicit definition . 19
4.2.6 IfcDerivedUnit definition . 19
4.3 Data Dictionaries . 19
4.3.1 General. 19
4.3.2 IfcLibraryReference identification . 20
4.3.3 IfcLibraryReference attributes . 20
4.4 Properties . 21
4.4.1 General. 21
4.4.2 IfcSimpleProperty definition . 22
4.4.3 IfcSimpleProperty unique definition . 22
4.4.4 IfcSimpleProperty in property set . 23
4.4.5 IfcProperty single, reference, or complex value . 23
4.4.6 IfcPropertySingleValue attributes . 23
4.4.7 IfcPropertyTableValue attributes . 24
4.5 Dynamic Properties . 25
4.5.1 IfcPropertyReferenceValue usage . 25
4.5.2 IfcProperty dependencies . 26
4.6 Sets of properties . 28
4.6.1 General. 28
4.6.2 IfcPropertySet definition . 29
4.6.3 IfcPropertySet unique definition . 29
4.6.4 IfcPropertySet allowed elements . 30
4.6.5 IfcPropertySet attributes . 30
4.7 Objects . 31
4.7.1 General. 31
4.7.2 IfcBuildingElementProxy definition . 31
4.7.3 IfcBuildingElementProxy unique definition . 31
4.7.4 IfcBuildingElementProxy as property sets . 33
4.7.5 IfcBuildingElementProxy as a system . 33
4.7.6 IfcBuildingElementProxy attributes . 34
4.8 Object types . 35
2
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oSIST prEN 17549-2:2022
prEN 17549-2:2021 (E)
4.8.1 General . 35
4.8.2 IfcBuildingElementProxyType definition . 36
4.8.3 IfcBuildingElementProxyType unique definition . 37
4.8.4 IfcBuildingElementProxyType as property sets. 38
4.8.5 IfcBuildingElementProxyType as a system . 38
4.8.6 ApplicableOccurrence value . 39
4.8.7 IfcBuildingElementProxyType attributes . 39
4.9 Semantic relationships . 40
4.9.1 General . 40
4.9.2 IfcGroup definition . 42
4.9.3 IfcGroup unique definition . 42
4.9.4 IfcGroup as semantic relationship . 43
4.10 Constraints . 45
4.10.1 General . 45
4.10.2 ConstraintGrade value . 46
4.10.3 IfcConstraint target . 47
4.10.4 ObjectiveQualifier value . 50
4.10.5 DataValue value . 51
4.10.6 IfcConstraint definition . 51
4.10.7 IfcObjective attributes . 52
4.10.8 IfcMetric attributes . 54
4.11 Contexts . 55
4.11.1 General . 55
4.11.2 IfcProject allowed decompositions . 55
4.11.3 IfcBuilding allowed content . 56
4.11.4 IfcProject allowed declarations . 57
4.11.5 IfcProjectLibrary allowed declarations . 57
4.12 Root . 58
4.12.1 IfcRoot attributes . 58
5 Core data schemas . 58
5.1 General . 58
5.2 IfcKernel . 59
5.2.2 Types . 61
5.2.3 Entities . 62
5.2.4 Functions . 115
5.2.5 Rules . 115
5.3 IfcControlExtension . 115
5.3.1 Entities . 115
5.4 IfcProductExtension . 117
5.4.1 Entities . 117
6 Shared element data schemas . 137
6.1 IfcSharedBuildingElements . 137
6.1.1 Types . 137
6.1.2 Entities . 137
7 Domain specific data schemas . 145
8 Resource definition data schemas . 145
8.1 General . 145
8.2 IfcActorResource . 145
8.2.1 Types . 145
8.2.2 Entities . 145
8.3 IfcConstraintResource . 149
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8.3.1 Types . 150
8.3.2 Entities . 151
8.4 IfcCostResource . 160
8.4.1 General. 160
8.4.2 Types . 160
8.4.3 Entities . 161
8.5 IfcDateTimeResource . 163
8.5.1 Types . 163
8.6 IfcExternalReferenceResource . 163
8.6.1 Schema definition . 163
8.6.2 Types . 163
8.6.3 Entities . 164
8.7 IfcMeasureResource . 168
8.7.1 Types . 168
8.7.2 Entities . 175
8.7.3 Functions . 183
8.8 IfcPropertyResource . 183
8.8.1 Schema definition . 183
8.8.2 Types . 184
8.8.3 Entities . 184
8.9 IfcUtilityResource . 199
8.9.1 Schema definition . 199
8.9.2 Types . 199
8.9.3 Entities . 200
Annex A (normative) Computer interpretable listings . 206
A.1 CODview-2 long form schema . Error! Bookmark not defined.
Annex B (informative) Examples . 207
B.1 Preliminary examples . 207
B.1.1 Dimensions and units . 207
B.1.2 Data definition and data dictionaries: properties and data templates . 209
B.1.3 Dependencies between properties: IfcAppliedValue . 212
B.1.4 Dependencies between properties: JavaScript . 213
B.1.5 Constraints on values: IfcConstraint . 215
B.1.6 Semantic relationships: IfcGroup. 219
B.2 Business examples . 221
B.2.1 Using requirements . 221
B.2.2 Check of the consistency between the objects included in a project and the
requirements defined in a previous phase . 223
B.2.3 Semantic, concurrent, and iterative definition of an object during design phases . 224
B.2.4 Product catalogue . 226
B.2.5 Search in a product catalogue . 231
B.2.6 Bills of quantities (pre-design programs, technical specifications, offers) . 232
B.2.7 Procurement and product purchase . 233
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European foreword
This document (prEN 17549-2:2021) has been prepared by Technical Committee CEN/TC 442 “Building
Information Modelling (BIM)”, the secretariat of which is held by SN.
This document is currently submitted to the CEN Enquiry.
The key words “MUST”, “MUST NOT”, “REQUIRED”, “SHALL”, “SHALL NOT”, “SHOULD”, “SHOULD NOT”,
“RECOMMENDED”, “MAY”, and “OPTIONAL” in this document are to be interpreted as described in
ISO/IEC Directives, Part 2, 2016.
SHALL is the strongest expression (Requirement)
MAY is to permit something
MUST means something to apply for legal reasons
CAN expresses a possibility
SHOULD is a recommendation
Requirements – shall, shall not
Recommendations – should, should not
Permission – may, need not
Possibility and capability – can, cannot
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Introduction
This document is a technical Model View Definition (MVD) of EN ISO 16739-1:2020. It aims to set a
comprehensive digital structure to store and exchange Construction Object Data Views. It is intended for
software publishers for the construction sector as well as professionals in this sector using their software.
While “Building information modelling — Information structure based on EN ISO 16739-1:2020 to
exchange data templates and data sheets for construction objects — Part 1” focuses on data templates
and configured construction objects, this document includes the structures that shall be used to:
link the objects and properties to their semantic definitions through data dictionaries
express requirements and describe configurable construction objects using declarative expressions
organize the data exchanged during business workflows
The model view defined by this document can be designated as CODview-2.
It selects a few technical IFC classes to leverage the maximum potential from Building Information
Modelling (BIM):
It aims to provide access to dynamic business semantics. For this it uses the complementarity between
the underlying EN ISO 16739-1:2020 standard and the EN ISO 12006-3 for data dictionaries, thereby
outsourcing business semantics of the schema. The use of EN ISO 12006-3 is extended to the negotiation
of Data Templates to agree on a common language prior to data exchanges. These data exchanges can
concern construction projects as well as catalogues of construction products.
It aims to ease concurrent engineering by allowing the expression of requirements. For this it highlights
the use of constraints especially in the perspective of data exchanges related to business processes
(EN ISO 29481-2) and the traceability of decisions in models. These constraints make it possible to
express requests relating to construction projects or product catalogues. At last, they may also be used to
describe configurable products.
It aims to integrate into workflows as described in EN ISO 19650-1.
These three aspects make it possible to achieve interoperability of data used in software for the
construction and operation sector.
Figure 1 shows the general workflow of exchanges between actors willing to agree on a construction
object. It involves several standards (EN ISO 12006-3, EN ISO 29481-2, EN ISO 19650-1). The exchanges
using the CODview-2 standard appear as “CODview-2 payloads” in this figure.
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(*) Only two actors (actor A and
...
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