Specification for IfcClassificationResource

EXPRESS Definition

EXPRESS-G Diagram

Table of contents

• Schema Semantic Definition
• Simple Types
• Select Types
• Enumerations
• Class Definitions
• Functions

Simple Types

No Simple Types defined in this Schema

Select Types

No Select Types defined in this Schema

Enumerations

No Enumerations defined in this Schema

Class Definitions

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

C	IfcClassification IfcClassificationList IfcClassificationNotation
N	IfcNotationFacet

Functions

No Functions defined in this Schema

Schema Semantic Definition

The IfcClassificationResource schema defines the assignment of classification(s) to objects.

NOTE: New schema for R2.0. This schema was formerly part of the IfcPropertyResource schema.

Class IfcClassification

EXPRESS Definition

Class Semantic Definition

Used for the arrangement of objects into a class or category according to a common purpose or their possession of common characteristics.

NOTE:

History

This Class has changed after IFC Release 1.5.1, please see the Migration Guide for details

Attribute and Relationship Definitions

Superclasses and Subclasses

This Class does not have any Superclasses or Subclasses

Attributes and Relationships

Attribute type (OPT, DER, INV)		Redefinition (SELF)
	Attribute / Relation		Data or Rel. type	Definition
	Source		STRING	Source (or publisher) for this reference classification.
OPT	Table		STRING	Table from published reference.
	Notation		IfcClassificationNotation	Notation used from published reference.
	Description		STRING	Description of this published reference.
OPT	Edition		STRING	The edition or version of the classification system from which the classification is derived.

Geometry Use Definitions

Instances of this class have no physical presence and therefore no geometric representation.

Class IfcClassificationList

EXPRESS Definition

Class Semantic Definition

Data structure used to classify an element according to multiple classification systems.

NOTE:

History

This Class has changed after IFC Release 1.5.1, please see the Migration Guide for details

Attribute and Relationship Definitions

Superclasses and Subclasses

This Class does not have any Superclasses or Subclasses

Attributes and Relationships

Attribute type (OPT, DER, INV)		Redefinition (SELF)
	Attribute / Relation		Data or Rel. type	Definition
	Classifications		LIST [1:?] OF IfcClassification	Published classifications referenced.
	Priority		INTEGER	Priority index into list of classifications.

Geometry Use Definitions

Instances of this class have no physical presence and therefore no geometric representation.

Class IfcClassificationNotation

EXPRESS Definition

Class Semantic Definition

Notation used from published reference.

NOTE: A classification notation may be developed using various classification facets. A facet is a part of the actual notation but which has a specific meaning. For instance, it may be appropriate to classify an item by owning discipline (actor) and by an entry from a classification table such as CI/SfB. In this case, an external wall might be classified as:

A210 or (using a separator character) A:210

History

This Class has changed after IFC Release 1.5.1, please see the Migration Guide for details

Attribute and Relationship Definitions

Superclasses and Subclasses

This Class does not have any Superclasses or Subclasses

Attributes and Relationships

Attribute type (OPT, DER, INV)		Redefinition (SELF)
	Attribute / Relation		Data or Rel. type	Definition
	NotationFacets		LIST [1:?] OF IfcNotationFacet	Alphanumeric characters in defined groups from which the classification notation is derived.

Geometry Use Definitions

Instances of this class have no physical presence and therefore no geometric representation.

Class IfcNotationFacet

EXPRESS Definition

Class Semantic Definition

A group of alphanumeric characters used within a classification notation.

NOTE:

History

This Class has changed after IFC Release 1.5.1, please see the Migration Guide for details

Attribute and Relationship Definitions

Superclasses and Subclasses

This Class does not have any Superclasses or Subclasses

Attributes and Relationships

Attribute type (OPT, DER, INV)		Redefinition (SELF)
	Attribute / Relation		Data or Rel. type	Definition
	NotationValue		STRING	The actual alphanumeric character group forming the notation STRING.
OPT	Purpose		STRING	The purpose of the notation STRING.

Geometry Use Definitions

Instances of this class have no physical presence and therefore no geometric representation.