IfcWindowLiningProperties

BACnet MVD

#### IfcWindowLiningProperties

Natural language names

| Festdefinierte Merkmale des Fensterrahmens / der Fensterzarge
| Window Lining Properties
| Propriétés de cadre de fenêtre

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcWindowLiningProperties |  |  | MOVED | Schema changed from IFCSHAREDBLDGELEMENTS to IFCARCHITECTUREDOMAIN.
OwnerHistory |  |  | MODIFIED | Instantiation changed to OPTIONAL.
LiningThickness |  |  | MODIFIED | Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
TransomThickness |  |  | MODIFIED | Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
MullionThickness |  |  | MODIFIED | Type changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure.
LiningOffset |  |  | ADDED |
LiningToPanelOffsetX |  |  | ADDED |
LiningToPanelOffsetY |  |  | ADDED |

##### Semantic definitions at the entity

Entity definition

The window lining is the outer frame which enables the window to be fixed in position. The window lining is used to hold the window panels or other casements. The parameter of the IfcWindowLiningProperties define the geometrically relevant parameter of the lining.

> NOTE The IfcWindowLiningProperties shall only be applied to construct the 3D shape of a window, if the attribute IfcWindowType.ParameterTakesPrecedence is set TRUE.

The IfcWindowLiningProperties are included in the set of properties of IfcWindowStyle.HasPropertySets. More information about the window lining can be included in the same set of the IfcWindowType using another IfcPropertySet for dynamic extensions.

The IfcWindowLiningProperties does not hold a geometric representation. However it defines parameters which can be used to create the shape of the window type(which is inserted by the IfcWindow into the spatial context of the project) as shown in Figure 258. The parameters at the IfcWindowLiningProperties define a standard window lining, including (if given) a mullion and a transom (for horizontal and vertical splits). The outer boundary of the lining is determined by the 'Profile' shape representation assigned to the IfcWindow, which inserts the IfcWindowType.

The lining is applied to all faces of the opening reveal. The parameter are:

- LiningDepth
- LiningThickness
- LiningOffset
- LiningToPanelOffsetX
- LiningToPanelOffsetY

The inner side is defined as the direction of the window panel opening operation.

If the OperationType of the window style is

- DoublePanelVertical (shown)
- TriplePanelBottom
- TriplePanelTop
- TriplePanelLeft
- TriplePanelRight

the following additional parameter apply:

- MullionThickness
- FirstMullionOffset measured as offset to the Z axis (in XZ plane) as a normalized ratio measure

If the OperationType of the window type is:

- DoublePanelHorizontal
- TriplePanelBottom
- TriplePanelTop
- TriplePanelLeft
- TriplePanelRight

the following additional parameter apply

- TransomThickness
- FirstTransomOffset measured as offset to the X axis (in XZ plane) as a normalized ratio measure

If the OperationType of the window type is:

- TriplePanelVertical

the following additional parameter apply:

- SecondMullionOffset measured as offset to the Z axis (in XZ plane) as a normalized ratio measure

If the OperationType of the window type is:

- TriplePanelHorizontal

the following additional parameter apply:

- SecondTransomOffset measured as offset to the X axis (in XZ plane) as a normalized ratio measure

Figure 258 — Window lining properties

> HISTORY New entity in IFC2.0. Has been renamed from IfcWindowLining in IFC2x.

> IFC4 CHANGE The following attributes have been added LiningOffset, LiningToPanelOffsetX, LiningToPanelOffsetY. The attribute ShapeAspectStyle is deprecated and shall no longer be used. Supertype changed to new IfcPreDefinedPropertySet.

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
5 | LiningDepth | IfcPositiveLengthMeasure | ? | Depth of the window lining (dimension measured perpendicular to window elevation plane). |  | X

6

LiningThickness

IfcNonNegativeLengthMeasure

?

Thickness of the window lining as explained in the figure above. If LiningThickness value is 0. (zero) it denotes a window without a lining (all other lining parameters shall be set to NIL in this case). If the LiningThickness is NIL it denotes that the value is not available.

> IFC4 CHANGE Data type modified to be IfcNonNegativeLengthMeasure.

X

7

TransomThickness

IfcNonNegativeLengthMeasure

?

Thickness of the transom (horizontal separator of window panels within a window), measured parallel to the window elevation plane. The transom is part of the lining and the transom depth is assumed to be identical to the lining depth. If the TransomThickness is set to zero (and the TransomOffset set to a positive length), then the window is divided vertically without a physical divider.

> IFC4 CHANGE Data type changed to IfcNonNegativeLengthMeasure.

X

8

MullionThickness

IfcNonNegativeLengthMeasure

?

Thickness of the mullion (vertical separator of window panels within a window), measured parallel to the window elevation plane. The mullion is part of the lining and the mullion depth is assumed to be identical to the lining depth. If the MullionThickness is set to zero (and the MullionOffset set to a positive length), then the window is divided horizontally without a physical divider.

> IFC4 CHANGE Data type changed to IfcNonNegativeLengthMeasure.

X

9 | FirstTransomOffset | IfcNormalisedRatioMeasure | ? | Offset of the transom centerline, measured along the z-axis of the window placement co-ordinate system. An offset value = 0.5 indicates that the transom is positioned in the middle of the window. |  | X
10 | SecondTransomOffset | IfcNormalisedRatioMeasure | ? | Offset of the transom centerline for the second transom, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.666 indicates that the second transom is positioned at two/third of the window. |  | X
11 | FirstMullionOffset | IfcNormalisedRatioMeasure | ? | Offset of the mullion centerline, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.5 indicates that the mullion is positioned in the middle of the window. |  | X
12 | SecondMullionOffset | IfcNormalisedRatioMeasure | ? | Offset of the mullion centerline for the second mullion, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.666 indicates that the second mullion is positioned at two/third of the window. |  | X

13

ShapeAspectStyle

IfcShapeAspect

?

Optional link to a shape aspect definition, which points to the part of the geometric representation of the window style, which is used to represent the lining.

> IFC4 CHANGE The attribute is deprecated and shall no longer be used, i.e. the value shall be NIL ($).

X

14

LiningOffset

IfcLengthMeasure

?

Offset of the window lining. The offset is given as distance along the y axis of the local placement (perpendicular to the window plane).

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

15

LiningToPanelOffsetX

IfcLengthMeasure

?

Offset between the lining and the window panel measured along the x-axis of the local placement. Should be smaller or equal to the LiningThickness.

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

16

LiningToPanelOffsetY

IfcLengthMeasure

?

Offset between the lining and the window panel measured along the y-axis of the local placement. Should be smaller or equal to the IfcWindowPanelProperties.PanelThickness.

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

Formal Propositions

Rule | Description
--- | ---

WR31

Either both parameter, LiningDepth and LiningThickness are given, or only the LiningThickness, then the LiningDepth is variable. It is not valid to only assert the LiningDepth.

> NOTE A LiningDepth with NIL ($) value indicates a window style with a lining equal to the wall thickness.

> IFC4 CHANGE Rule corrected.

WR32 | Either both parameter, FirstTransomOffset and SecondTransomOffset are given, or only the FirstTransomOffset, or none of both. It is not valid to only assert the SecondTransomOffset.
WR33 | Either both parameter, FirstMullionOffset and SecondMullionOffset are given, or only the FirstMullionOffset, or none of both. It is not valid to only assert the SecondMullionOffset.

WR34

The IfcWindowPanelProperties shall only be used in the context of an IfcDoorType.

> NOTE The deprecated entity IfcWindowStyle is applicable as well.

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcRoot
1 | GlobalId | IfcGloballyUniqueId |  | Assignment of a globally unique identifier within the entire software world. | X | X

2

OwnerHistory

IfcOwnerHistory

?

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

X

3 | Name | IfcLabel | ? | 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 | X
4 | Description | IfcText | ? | Optional description, provided for exchanging informative comments. |  | X
IfcPropertyDefinition
| HasContext | IfcRelDeclares @RelatedDefinitions | S[0:1] |  |  | X
| HasAssociations | IfcRelAssociates @RelatedObjects | S[0:?] | Reference to the relationship IfcRelAssociates and thus to those externally defined concepts, like classifications, documents, or library information, which are associated to the property definition. |  | X
IfcPropertySetDefinition

DefinesType

IfcTypeObject
@HasPropertySets

S[0:?]

The type object to which the property set is assigned. The property set acts as a shared property set to all occurrences of the type object.

> NOTE The relationship between the IfcPropertySetDefinition and the IfcTypeObject is a direct relationship, not utilizing IfcRelDefinesByProperties, for maintaining compatibility with earlier releases of this standard.

> IFC4 CHANGE The cardinality has been changed from 0:1 to 0:? with upward compatibility for file based exchange.

X

IsDefinedBy

IfcRelDefinesByTemplate
@RelatedPropertySets

S[0:?]

Relation to the property set template, via the objectified relationship IfcRelDefinesByTemplate, that, if given, provides the definition template for the property set or quantity set and its properties.

> IFC4 CHANGE New inverse relationship, change made with upward compatibility for file based exchange.

X

DefinesOccurrence

IfcRelDefinesByProperties
@RelatingPropertyDefinition

S[0:?]

Reference to the relation to one or many object occurrences that are characterized by the property set definition. A single property set can be assigned to multiple object occurrences using the objectified relationship IfcRefDefinesByProperties.

> IFC4 CHANGE Inverse attribute renamed from PropertyDefinitionOf with upward compatibility for file-based exchange.

X

IfcPreDefinedPropertySet
IfcWindowLiningProperties
5 | LiningDepth | IfcPositiveLengthMeasure | ? | Depth of the window lining (dimension measured perpendicular to window elevation plane). |  | X

6

LiningThickness

IfcNonNegativeLengthMeasure

?

Thickness of the window lining as explained in the figure above. If LiningThickness value is 0. (zero) it denotes a window without a lining (all other lining parameters shall be set to NIL in this case). If the LiningThickness is NIL it denotes that the value is not available.

> IFC4 CHANGE Data type modified to be IfcNonNegativeLengthMeasure.

X

7

TransomThickness

IfcNonNegativeLengthMeasure

?

Thickness of the transom (horizontal separator of window panels within a window), measured parallel to the window elevation plane. The transom is part of the lining and the transom depth is assumed to be identical to the lining depth. If the TransomThickness is set to zero (and the TransomOffset set to a positive length), then the window is divided vertically without a physical divider.

> IFC4 CHANGE Data type changed to IfcNonNegativeLengthMeasure.

X

8

MullionThickness

IfcNonNegativeLengthMeasure

?

Thickness of the mullion (vertical separator of window panels within a window), measured parallel to the window elevation plane. The mullion is part of the lining and the mullion depth is assumed to be identical to the lining depth. If the MullionThickness is set to zero (and the MullionOffset set to a positive length), then the window is divided horizontally without a physical divider.

> IFC4 CHANGE Data type changed to IfcNonNegativeLengthMeasure.

X

9 | FirstTransomOffset | IfcNormalisedRatioMeasure | ? | Offset of the transom centerline, measured along the z-axis of the window placement co-ordinate system. An offset value = 0.5 indicates that the transom is positioned in the middle of the window. |  | X
10 | SecondTransomOffset | IfcNormalisedRatioMeasure | ? | Offset of the transom centerline for the second transom, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.666 indicates that the second transom is positioned at two/third of the window. |  | X
11 | FirstMullionOffset | IfcNormalisedRatioMeasure | ? | Offset of the mullion centerline, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.5 indicates that the mullion is positioned in the middle of the window. |  | X
12 | SecondMullionOffset | IfcNormalisedRatioMeasure | ? | Offset of the mullion centerline for the second mullion, measured along the x-axis of the window placement co-ordinate system. An offset value = 0.666 indicates that the second mullion is positioned at two/third of the window. |  | X

13

ShapeAspectStyle

IfcShapeAspect

?

Optional link to a shape aspect definition, which points to the part of the geometric representation of the window style, which is used to represent the lining.

> IFC4 CHANGE The attribute is deprecated and shall no longer be used, i.e. the value shall be NIL ($).

X

14

LiningOffset

IfcLengthMeasure

?

Offset of the window lining. The offset is given as distance along the y axis of the local placement (perpendicular to the window plane).

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

15

LiningToPanelOffsetX

IfcLengthMeasure

?

Offset between the lining and the window panel measured along the x-axis of the local placement. Should be smaller or equal to the LiningThickness.

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

16

LiningToPanelOffsetY

IfcLengthMeasure

?

Offset between the lining and the window panel measured along the y-axis of the local placement. Should be smaller or equal to the IfcWindowPanelProperties.PanelThickness.

> IFC4 CHANGE New attribute added at the end of the entity definition.

X

##### Definitions applying to Design Transfer View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Definitions applying to BACnet View

Concept inheritance

# | Concept | Template | Model View
--- | --- | --- | ---
IfcRoot
| Revision Control | Revision Control | Design Transfer View

##### Formal representations

XML Specification
`<xs:element name="IfcWindowLiningProperties" type="ifc:IfcWindowLiningProperties" substitutionGroup="ifc:IfcPreDefinedPropertySet" nillable="true"/>
<xs:complexType name="IfcWindowLiningProperties">
<xs:complexContent>
<xs:extension base="ifc:IfcPreDefinedPropertySet">
<xs:sequence>
<xs:element name="ShapeAspectStyle" type="ifc:IfcShapeAspect" nillable="true" minOccurs="0"/>
</xs:sequence>
<xs:attribute name="LiningDepth" type="ifc:IfcPositiveLengthMeasure" use="optional"/>
<xs:attribute name="LiningThickness" type="ifc:IfcNonNegativeLengthMeasure" use="optional"/>
<xs:attribute name="TransomThickness" type="ifc:IfcNonNegativeLengthMeasure" use="optional"/>
<xs:attribute name="MullionThickness" type="ifc:IfcNonNegativeLengthMeasure" use="optional"/>
<xs:attribute name="FirstTransomOffset" type="ifc:IfcNormalisedRatioMeasure" use="optional"/>
<xs:attribute name="SecondTransomOffset" type="ifc:IfcNormalisedRatioMeasure" use="optional"/>
<xs:attribute name="FirstMullionOffset" type="ifc:IfcNormalisedRatioMeasure" use="optional"/>
<xs:attribute name="SecondMullionOffset" type="ifc:IfcNormalisedRatioMeasure" use="optional"/>
<xs:attribute name="LiningOffset" type="ifc:IfcLengthMeasure" use="optional"/>
<xs:attribute name="LiningToPanelOffsetX" type="ifc:IfcLengthMeasure" use="optional"/>
<xs:attribute name="LiningToPanelOffsetY" type="ifc:IfcLengthMeasure" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcWindowLiningProperties
SUBTYPE OF (IfcPreDefinedPropertySet);
LiningDepth : OPTIONAL IfcPositiveLengthMeasure;
LiningThickness : OPTIONAL IfcNonNegativeLengthMeasure;
TransomThickness : OPTIONAL IfcNonNegativeLengthMeasure;
MullionThickness : OPTIONAL IfcNonNegativeLengthMeasure;
FirstTransomOffset : OPTIONAL IfcNormalisedRatioMeasure;
SecondTransomOffset : OPTIONAL IfcNormalisedRatioMeasure;
FirstMullionOffset : OPTIONAL IfcNormalisedRatioMeasure;
SecondMullionOffset : OPTIONAL IfcNormalisedRatioMeasure;
ShapeAspectStyle : OPTIONAL IfcShapeAspect;
LiningOffset : OPTIONAL IfcLengthMeasure;
LiningToPanelOffsetX : OPTIONAL IfcLengthMeasure;
LiningToPanelOffsetY : OPTIONAL IfcLengthMeasure;
WHERE
WR31 : NOT(EXISTS(LiningDepth) AND NOT(EXISTS(LiningThickness)));
WR32 : NOT(NOT(EXISTS(FirstTransomOffset)) AND EXISTS(SecondTransomOffset));
WR33 : NOT(NOT(EXISTS(FirstMullionOffset)) AND EXISTS(SecondMullionOffset));
WR34 : (EXISTS(SELF\IfcPropertySetDefinition.DefinesType[1]))
AND
(
('IFCSHAREDBLDGELEMENTS.IfcWindowType' IN TYPEOF(SELF\IfcPropertySetDefinition.DefinesType[1]))
OR
('IFCARCHITECTUREDOMAIN.IfcWindowStyle' IN TYPEOF(SELF\IfcPropertySetDefinition.DefinesType[1]))
);
END_ENTITY;

EXPRESS-G diagram

`

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