IfcWindow

Natural language names
Fenster
Window
Fenêtre
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcWindow
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      PredefinedTypeADDED
      PartitioningTypeADDED
      UserDefinedPartitioningTypeADDED
IFC4x2 DRAFT 1
    IfcWindow
      PositionedRelativeToADDED
Semantic definitions at the entity
Entity definition

The window is a building element that is predominately used to provide natural light and fresh air. It includes vertical opening but also horizontal opening such as skylights or light domes. It includes constructions with swinging, pivoting, sliding, or revolving panels and fixed panels. A window consists of a lining and one or several panels.

NOTE  Definition according to ISO 6707-1
Construction for closing a vertical or near vertical opening in a wall or pitched roof that will admit light and may admit fresh air.

The IfcWindow defines a particular occurrence of a window inserted in the spatial context of a project. A window can:

NOTE  View definitions or implementer agreements may restrict the relationship to only include one window (or door) into one opening.

There are two entities for window occurrences:

The actual parameter of the window and/or its shape is defined at the IfcWindow as the occurrence definition (or project instance), or by the IfcWindowType as the specific definition (or project type). The following parameters are given:

HISTORY  New entity in IFC1.0.
IFC4 CHANGE  The attributes PredefinedType and OperationType are added, the applicable type object has been changed to IfcDoorType.

Parameteric Representation using parameters at IfcWindowType

The parameters, which define the shape of the IfcWindow, are given at the IfcWindowType and the property sets, which are included in the IfcWindowType. The IfcWindow only defines the local placement. The overall size of the IfcWindow to be used to apply the lining or panel parameter provided by the IfcWindowType is determined by the IfcShapeRepresentation with the RepresentationIdentifier = 'Profile'. Only in case of an IfcWindow inserted into an IfcOpeningElement using the IfcRelFillsElement relatioship, having a horizontal extrusion (along the y-axis of the IfcDoor), the overall size is determined by the extrusion profile of the IfcOpeningElement.

Figure 270 illustrates the insertion of a window into the IfcOpeningElement by creating an instance of IfcWindow with PartitioningType = DoublePanelHorizontal. The parameters OverallHeight and OverallWidth show the extent of the window in the positive Z and X axis of the local placement of the window. The lining and the transom are created by the given parameters.

window 1

Figure 270 — Window placement

Figure 271 illustrates the final window (DoublePanelHorizontal) with first panel having PanelPosition = TOP, OperationType = BOTTOMHUNG and second panel having PanelPosition = BOTTOM and OperationType = TILTANDTURNLEFTHAND.

window 2

Figure 271 — Window planes

Window opening operation by window type

The parameters that defines the shape of the IfcWindow, are given at the IfcWindowType and the property sets, which are included in the IfcWindowType. The IfcWindow only defines the local placement which determines the opening direction of the window. The overall layout of the IfcWindow is determined by its IfcWindowType.PartitioningType. Each window panel has its own operation type, provided by IfcWindowPanelProperties.OperationType. All window panels are assumed to open into the same direction (if relevant for the particular window panel operation. The hindge side (whether a window opens to the left or to the right) is determined by the IfcWindowPanelProperties.OperationType.

NOTE   There are different conventions in different countries on how to show the symbolic presentation of the window panel operation (the "triangles"). Either as seen from the exterior, or from the interior side. The following figures show the symbolics from the exterior side (the convention as used predominately in Europe).

Figure 272 illustrates window operation types.

fig 1

The window panel (for side hung windows) opens always into the direction of the positive Y axis of the local placement. The determination of whether the window opens to the left or to the right is done at IfcWindowPanelProperties.OperationType. Here it is a left side opening window given by OperationType = SideHungLeftHand.

fig 2

If the window should open to the other side, then the local placement has to be changed. It is still a left hung window, given by IfcWindowPanelProperties.OperationType = SideHungLeftHand.

fig 3

If the window panel (for side hung windows) opens to the right, a separate window panel style needs to be used (here IfcWindowPanelProperties.OperationType = SideHungRightHand) and it always opens into the direction of the positive Y axis of the local placement. 

fig 4

If the window should open to the other side, then the local placement has to be changed. It is still a right hung window, given by IfcWindowPanelProperties.OperationTypeSideHungRightHand.

.

Figure 272 — Window operations

Attribute definitions
#AttributeTypeCardinalityDescription G
9OverallHeightIfcPositiveLengthMeasure? Overall measure of the height, it reflects the Z Dimension of a bounding box, enclosing the window opening. If omitted, the OverallHeight should be taken from the geometric representation of the IfcOpening in which the window is inserted.
NOTE  The body of the window might be taller then the window opening (for example in cases where the window lining includes a casing). In these cases the OverallHeight shall still be given as the window opening height, and not as the total height of the window lining.
X
10OverallWidthIfcPositiveLengthMeasure? Overall measure of the width, it reflects the X Dimension of a bounding box, enclosing the window opening. If omitted, the OverallWidth should be taken from the geometric representation of the IfcOpening in which the window is inserted.
NOTE  The body of the window might be wider then the window opening (for example in cases where the window lining includes a casing). In these cases the OverallWidth shall still be given as the window opening width, and not as the total width of the window lining.
X
11PredefinedTypeIfcWindowTypeEnum? Predefined generic type for a window that is specified in an enumeration. There may be a property set given specificly for the predefined types.
NOTE  The PredefinedType shall only be used, if no IfcWindowType is assigned, providing its own IfcWindowType.PredefinedType.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
12PartitioningTypeIfcWindowTypePartitioningEnum? Type defining the general layout of the window in terms of the partitioning of panels.
NOTE  The PartitioningType shall only be used, if no type object IfcWindowType is assigned, providing its own IfcWindowType.PartitioningType.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
13UserDefinedPartitioningTypeIfcLabel? Designator for the user defined partitioning type, shall only be provided, if the value of PartitioningType is set to USERDEFINED.X
Formal Propositions
RuleDescription
CorrectStyleAssignedEither there is no door type object associated, i.e. the IsTypedBy inverse relationship is not provided, or the associated type object has to be of type IfcWindowStyle.
NOTEnbsp; The deprecated type IfcWindowStyle is still included for backward compatibility reasons.
Inherited definitions from supertypes
Entity inheritance IfcWindowStandardCase IfcBuildingElement IfcElement IfcProduct IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRoot
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
X
3NameIfcLabel? Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects
S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups.X
NestsIfcRelNests
@RelatedObjects
S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from Decomposes defined at IfcObjectDefinition.
X
IsNestedByIfcRelNests
@RelatingObject
S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types).
IFC4 CHANGE  The inverse attribute datatype has been added and separated from IsDecomposedBy defined at IfcObjectDefinition.
X
HasContextIfcRelDeclares
@RelatedDefinitions
S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object.
IFC4 CHANGE  The inverse attribute datatype has been added.
X
IsDecomposedByIfcRelAggregates
@RelatingObject
S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
DecomposesIfcRelAggregates
@RelatedObjects
S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only).
IFC4 CHANGE  The inverse attribute datatype has been changed from the supertype IfcRelDecomposes to subtype IfcRelAggregates.
X
HasAssociationsIfcRelAssociates
@RelatedObjects
S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification.X
IfcObject
5ObjectTypeIfcLabel? The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects
S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
DeclaresIfcRelDefinesByObject
@RelatingObject
S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes.
IFC4 CHANGE  New inverse relationship, change made with upward compatibility for file based exchange.
X
IsTypedByIfcRelDefinesByType
@RelatedObjects
S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type.
IFC4 CHANGE  New inverse relationship, the link to IfcRelDefinesByType had previously be included in the inverse relationship IfcRelDefines. Change made with upward compatibility for file based exchange.
X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects
S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object.
IFC4 CHANGE  The data type has been changed from IfcRelDefines to IfcRelDefinesByProperties with upward compatibility for file based exchange.
X
IfcProduct
6ObjectPlacementIfcObjectPlacement? Placement of the product in space, the placement can either be absolute (relative to the world coordinate system), relative (relative to the object placement of another product), or constraint (e.g. relative to grid axes). It is determined by the various subtypes of IfcObjectPlacement, which includes the axis placement information to determine the transformation for the object coordinate system.X
7RepresentationIfcProductRepresentation? Reference to the representations of the product, being either a representation (IfcProductRepresentation) or as a special case a shape representations (IfcProductDefinitionShape). The product definition shape provides for multiple geometric representations of the shape property of the object within the same object coordinate system, defined by the object placement.X
ReferencedByIfcRelAssignsToProduct
@RelatingProduct
S[0:?]Reference to the IfcRelAssignsToProduct relationship, by which other products, processes, controls, resources or actors (as subtypes of IfcObjectDefinition) can be related to this product.X
PositionedRelativeToIfcRelPositions
@RelatedProducts
S[0:1]X
IfcElement
8TagIfcIdentifier? The tag (or label) identifier at the particular instance of a product, e.g. the serial number, or the position number. It is the identifier at the occurrence level.X
FillsVoidsIfcRelFillsElement
@RelatedBuildingElement
S[0:1]Reference to the IfcRelFillsElement Relationship that puts the element as a filling into the opening created within another element. X
ConnectedToIfcRelConnectsElements
@RelatingElement
S[0:?]Reference to the element connection relationship. The relationship then refers to the other element to which this element is connected to. X
IsInterferedByElementsIfcRelInterferesElements
@RelatedElement
S[0:?]Reference to the interference relationship to indicate the element that is interfered. The relationship, if provided, indicates that this element has an interference with one or many other elements.
NOTE  There is no indication of precedence between IsInterferedByElements and InterferesElements.
IFC4 CHANGE New inverse relationship.
X
InterferesElementsIfcRelInterferesElements
@RelatingElement
S[0:?]Reference to the interference relationship to indicate the element that interferes. The relationship, if provided, indicates that this element has an interference with one or many other elements.
NOTE  There is no indication of precedence between IsInterferedByElements and InterferesElements.
IFC4 CHANGE New inverse relationship.
X
HasProjectionsIfcRelProjectsElement
@RelatingElement
S[0:?]Projection relationship that adds a feature (using a Boolean union) to the IfcBuildingElement.X
ReferencedInStructuresIfcRelReferencedInSpatialStructure
@RelatedElements
S[0:?]Reference relationship to the spatial structure element, to which the element is additionally associated. This relationship may not be hierarchical, an element may be referenced by zero, one or many spatial structure elements.
IFC2x3 CHANGE  The inverse attribute has been added with upward compatibility for file based exchange.
X
HasOpeningsIfcRelVoidsElement
@RelatingBuildingElement
S[0:?]Reference to the IfcRelVoidsElement relationship that creates an opening in an element. An element can incorporate zero-to-many openings. For each opening, that voids the element, a new relationship IfcRelVoidsElement is generated. X
IsConnectionRealizationIfcRelConnectsWithRealizingElements
@RealizingElements
S[0:?]Reference to the connection relationship with realizing element. The relationship, if provided, assigns this element as the realizing element to the connection, which provides the physical manifestation of the connection relationship. X
ProvidesBoundariesIfcRelSpaceBoundary
@RelatedBuildingElement
S[0:?]Reference to space boundaries by virtue of the objectified relationship IfcRelSpaceBoundary. It defines the concept of an element bounding spaces. X
ConnectedFromIfcRelConnectsElements
@RelatedElement
S[0:?]Reference to the element connection relationship. The relationship then refers to the other element that is connected to this element. X
ContainedInStructureIfcRelContainedInSpatialStructure
@RelatedElements
S[0:1]Containment relationship to the spatial structure element, to which the element is primarily associated. This containment relationship has to be hierachical, i.e. an element may only be assigned directly to zero or one spatial structure. X
HasCoveringsIfcRelCoversBldgElements
@RelatingBuildingElement
S[0:?]Reference to IfcCovering by virtue of the objectified relationship IfcRelCoversBldgElement. It defines the concept of an element having coverings associated.X
IfcBuildingElement
IfcWindow
9OverallHeightIfcPositiveLengthMeasure? Overall measure of the height, it reflects the Z Dimension of a bounding box, enclosing the window opening. If omitted, the OverallHeight should be taken from the geometric representation of the IfcOpening in which the window is inserted.
NOTE  The body of the window might be taller then the window opening (for example in cases where the window lining includes a casing). In these cases the OverallHeight shall still be given as the window opening height, and not as the total height of the window lining.
X
10OverallWidthIfcPositiveLengthMeasure? Overall measure of the width, it reflects the X Dimension of a bounding box, enclosing the window opening. If omitted, the OverallWidth should be taken from the geometric representation of the IfcOpening in which the window is inserted.
NOTE  The body of the window might be wider then the window opening (for example in cases where the window lining includes a casing). In these cases the OverallWidth shall still be given as the window opening width, and not as the total width of the window lining.
X
11PredefinedTypeIfcWindowTypeEnum? Predefined generic type for a window that is specified in an enumeration. There may be a property set given specificly for the predefined types.
NOTE  The PredefinedType shall only be used, if no IfcWindowType is assigned, providing its own IfcWindowType.PredefinedType.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
12PartitioningTypeIfcWindowTypePartitioningEnum? Type defining the general layout of the window in terms of the partitioning of panels.
NOTE  The PartitioningType shall only be used, if no type object IfcWindowType is assigned, providing its own IfcWindowType.PartitioningType.
IFC4 CHANGE The attribute has been added at the end of the entity definition.
X
13UserDefinedPartitioningTypeIfcLabel? Designator for the user defined partitioning type, shall only be provided, if the value of PartitioningType is set to USERDEFINED.X
Definitions applying to General Usage

 Instance diagram


Concept usage

Door Attributes

The Door Attributes concept applies to this entity.



Property Sets for Objects

The Property Sets for Objects concept template applies to this entity as shown in Table 209.

PsetNameProperties
Pset_WindowCommon
TemplatePropertyNameValueReference
Single ValueReferenceIfcIdentifier
Single ValueAcousticRatingIfcLabel
Single ValueFireRatingIfcLabel
Single ValueSecurityRatingIfcLabel
Single ValueIsExternalIfcBoolean
Single ValueInfiltrationIfcVolumetricFlowRateMeasure
Single ValueThermalTransmittanceIfcThermalTransmittanceMeasure
Single ValueGlazingAreaFractionIfcPositiveRatioMeasure
Single ValueHasSillExternalIfcBoolean
Single ValueHasSillInternalIfcBoolean
Single ValueHasDriveIfcBoolean
Single ValueSmokeStopIfcBoolean
Single ValueFireExitIfcBoolean
Single ValueWaterTightnessRatingIfcLabel
Single ValueMechanicalLoadRatingIfcLabel
Single ValueWindLoadRatingIfcLabel
Enumerated ValueStatusIfcLabel

Table 209 — IfcWindow Property Sets for Objects



Object Typing

The Object Typing concept template applies to this entity as shown in Table 210.

HasTypeRelatingType
IfcWindowType

Table 210 — IfcWindow Object Typing



Quantity Sets

The Quantity Sets concept template applies to this entity as shown in Table 211.

QsetNameQuantities
Qto_WindowBaseQuantities

Table 211 — IfcWindow Quantity Sets



Material Constituent Set

The Material Constituent Set concept template applies to this entity as shown in Table 212.

Description
Indicates that the material constituent applies to the window lining.

Table 212 — IfcWindow Material Constituent Set

The material of the IfcWindow is defined by the IfcMaterialConstituentSet or as fall back by IfcMaterial and attached by the IfcRelAssociatesMaterial.RelatingMaterial. It is accessible by the inverse HasAssociations relationship.

If the fall back single IfcMaterial is referenced, it applies to the lining and framing of the window.



Spatial Containment

The Spatial Containment concept template applies to this entity as shown in Table 213.

RelatingStructure
IfcBuildingStorey

Table 213 — IfcWindow Spatial Containment

The IfcWindow, as any subtype of IfcBuildingElement, may participate alternatively in one of the two different containment relationships:

The IfcWindow may also be connected to the IfcOpeningElement in which it is placed as a filler. In this case, the spatial containment relationship shall be provided, see Figure 271.

Containment
NOTE  The containment shall be defined independently of the filling relationship, that is, even if the IfcWindow is a filling of an opening established by IfcRelFillsElement, it is also contained in the spatial structure by an IfcRelContainedInSpatialStructure.

Figure 271 — Window spatial containment

 


Product Local Placement

The Product Local Placement concept template applies to this entity as shown in Table 214.

Table 214 — IfcWindow Product Local Placement

The following restriction is imposed:

  1. The PlacementRelTo relationship of IfcLocalPlacement shall point to the local placement of the same element (if given), in which the IfcWindow is used as a filling (normally an IfcOpeningElement), as provided by the IfcRelFillsElement relationship.
  2. If the IfcWindow is not inserted into an IfcOpeningElement, then the PlacementRelTo relationship of IfcLocalPlacement shall point (if given) to the local placement of the same IfcSpatialStructureElement that is used in the ContainedInStructure inverse attribute or to a referenced spatial structure element at a higher level.
  3. If the relative placement is not used, the absolute placement is defined within the world coordinate system.
NOTE  The product placement is used to determine the opening direction of the window.


Profile 3D Geometry

The Profile 3D Geometry concept applies to this entity.

The window profile is represented by a three-dimensional closed curve within a particular shape representation. The profile is used to apply the parameter of the parametric window representation. The following attribute values for the IfcShapeRepresentation holding this geometric representation shall be used:

A 'Profile' representation has to be provided if:



mvdXML Specification
<?xml version="1.0"?>
<ConceptRoot xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="36bb11f4-6640-4083-866d-f730573d7d50" name="IfcWindow" status="sample" applicableRootEntity="IfcWindow">
  <Applicability uuid="00000000-0000-0000-0000-000000000000" status="sample">
    <Template ref="2c55936b-96d2-411d-886e-ce05994d32cb" />
    <TemplateRules operator="and" />
  </Applicability>
  <Concepts>
    <Concept uuid="9c7141e5-c06b-43a5-8bbe-b784054f8668" name="Door Attributes" status="sample" override="false">
      <Template ref="1e5da429-cf7c-4f23-8b32-53ad98e238ad" />
    </Concept>
    <Concept uuid="6f2dbd1b-bdf8-48c7-be18-7d740113b55c" name="Property Sets for Objects" status="sample" override="false">
      <Template ref="f74255a6-0c0e-4f31-84ad-24981db62461" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="PsetName[Value]='Pset_WindowCommon'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="ea5fab64-65c0-4a70-ac13-066b78eecc34" name="Object Typing" status="sample" override="false">
      <Template ref="35a2e10e-20df-40f4-ab2f-dacf0a6744f4" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="RelatingType[Type]='IfcWindowType'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="a62a90cb-6b85-41f2-9c38-7d27f46e0dbb" name="Quantity Sets" status="sample" override="false">
      <Template ref="6652398e-6579-4460-8cb4-26295acfacc7" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="QsetName[Value]='Qto_WindowBaseQuantities'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="a709a029-be81-45a5-b6c5-5d4e90e4a58c" name="Material Constituent Set" status="sample" override="false">
      <Template ref="d96f7f7d-e742-4db8-9b5d-18a36a6df884" />
      <TemplateRules operator="and">
        <TemplateRule Description="Indicates that the material constituent applies to the window lining." Parameters="" />
        <TemplateRule Description="Indicates that the material constituent applies to the windows panels(s); if not provided, the 'Lining' material information applies to panel(s) as well." Parameters="" />
        <TemplateRule Description="Indicates that the material constituent applies to the glazing part." Parameters="" />
      </TemplateRules>
    </Concept>
    <Concept uuid="4f761250-1800-46f5-898e-fbfacaeddb1f" name="Spatial Containment" status="sample" override="false">
      <Template ref="d9a3f822-0014-4bc2-8d94-9d9067759045" />
      <TemplateRules operator="and">
        <TemplateRule Parameters="RelatingStructure[Type]='IfcBuildingStorey'" />
      </TemplateRules>
    </Concept>
    <Concept uuid="1f7a9900-f8ab-495d-bd16-edbb307acb65" name="Product Local Placement" status="sample" override="false">
      <Template ref="cbe85b5f-7912-4a43-8bb7-1e63bf40b26d" />
    </Concept>
    <Concept uuid="ca942783-7fe2-4844-9e7f-836b96aa30ab" name="Profile 3D Geometry" status="sample" override="false">
      <Template ref="1d897220-740d-4793-9a8d-5d2774c7bc00" />
    </Concept>
  </Concepts>
</ConceptRoot>
Concept inheritance

#ConceptTemplateModel View
IfcRoot
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
IfcObjectDefinition
Classification AssociationClassification AssociationGeneral Usage
IfcObject
Object User IdentityObject User IdentityGeneral Usage
Object Predefined TypeObject Predefined TypeGeneral Usage
Property Sets with OverrideProperty Sets with OverrideGeneral Usage
IfcProduct
Product PlacementProduct PlacementGeneral Usage
Product Geometric RepresentationProduct Geometric RepresentationGeneral Usage
IfcElement
CoG GeometryCoG GeometryGeneral Usage
Box GeometryBox GeometryGeneral Usage
FootPrint GeometryFootPrint GeometryGeneral Usage
Body SurfaceOrSolidModel GeometryBody SurfaceOrSolidModel GeometryGeneral Usage
Body SurfaceModel GeometryBody SurfaceModel GeometryGeneral Usage
Body Tessellation GeometryBody Tessellation GeometryGeneral Usage
Body Brep GeometryBody Brep GeometryGeneral Usage
Body AdvancedBrep GeometryBody AdvancedBrep GeometryGeneral Usage
Body CSG GeometryBody CSG GeometryGeneral Usage
Mapped GeometryMapped GeometryGeneral Usage
Element VoidingElement VoidingGeneral Usage
Element ProjectingElement ProjectingGeneral Usage
Linear PlacementProduct Linear PlacementGeneral Usage
IfcBuildingElement
Product AssignmentProduct AssignmentGeneral Usage
Surface 3D GeometrySurface 3D GeometryGeneral Usage
IfcWindow
Door AttributesDoor AttributesGeneral Usage
Property Sets for ObjectsProperty Sets for ObjectsGeneral Usage
Object TypingObject TypingGeneral Usage
Quantity SetsQuantity SetsGeneral Usage
Material Constituent SetMaterial Constituent SetGeneral Usage
Spatial ContainmentSpatial ContainmentGeneral Usage
Product Local PlacementProduct Local PlacementGeneral Usage
Profile 3D GeometryProfile 3D GeometryGeneral Usage
Examples
Formal representations
XML Specification
 <xs:element name="IfcWindow" type="ifc:IfcWindow" substitutionGroup="ifc:IfcBuildingElement" nillable="true"/>
 <xs:complexType name="IfcWindow">
  <xs:complexContent>
   <xs:extension base="ifc:IfcBuildingElement">
    <xs:attribute name="OverallHeight" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
    <xs:attribute name="OverallWidth" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
    <xs:attribute name="PredefinedType" type="ifc:IfcWindowTypeEnum" use="optional"/>
    <xs:attribute name="PartitioningType" type="ifc:IfcWindowTypePartitioningEnum" use="optional"/>
    <xs:attribute name="UserDefinedPartitioningType" type="ifc:IfcLabel" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcWindow
 SUPERTYPE OF(IfcWindowStandardCase)
 SUBTYPE OF (IfcBuildingElement);
  OverallHeight : OPTIONAL IfcPositiveLengthMeasure;
  OverallWidth : OPTIONAL IfcPositiveLengthMeasure;
  PredefinedType : OPTIONAL IfcWindowTypeEnum;
  PartitioningType : OPTIONAL IfcWindowTypePartitioningEnum;
  UserDefinedPartitioningType : OPTIONAL IfcLabel;
 WHERE
  CorrectStyleAssigned : (SIZEOF(IsTypedBy) = 0)
OR ('IFCSHAREDBLDGELEMENTS.IfcWindowType' IN TYPEOF(SELF\IfcObject.IsTypedBy[1].RelatingType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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