IFC 4.3.x development

7.1.3.5 IfcWindowLiningProperties

Change log

IFC4

additions attributes LiningOffset
additions attributes LiningToPanelOffsetX
additions attributes LiningToPanelOffsetY
modificationsattributes LiningThickness definition Changed from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure
modificationsattributes MullionThickness definitionChanged from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure
modificationsattributes TransomThickness definitionChanged from IfcPositiveLengthMeasure to IfcNonNegativeLengthMeasure
modificationssupertype Changed from IfcPropertySetDefinition to IfcPreDefinedPropertySet
modificationswhere_rules WR31 definition Changed from not(not(exists(LiningDepth)) and exists(LiningThickness)) to not(exists(LiningDepth) and not(exists(LiningThickness)))
modificationswhere_rules WR34 definition Changed from exists(self\IfcPropertySetDefinition.DefinesType[1]) and ('ifc2x3.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) to (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1])))

IFC4X1

modificationswhere_rules WR34 definitionChanged from (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1]))) to (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4x1.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4x1.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1])))

IFC4X2

modificationswhere_rules WR34 definitionChanged from (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4x1.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4x1.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1]))) to (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4x2.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4x2.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1])))

IFC4X3_RC3

modificationswhere_rules WR34 definitionChanged from (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4x2.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4x2.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1]))) to (exists(self\IfcPropertySetDefinition.DefinesType[1])) and (('ifc4x3_rc3.ifcwindowtype' in typeof(self\IfcPropertySetDefinition.DefinesType[1])) or ('ifc4x3_rc3.ifcwindowstyle' in typeof(self\IfcPropertySetDefinition.DefinesType[1])))

7.1.3.5.1 Semantic definitions at the entity

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 1. 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.

 

lining 5 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.
lining 1 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
lining 2 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
lining 3 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
lining 4 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 1 — 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.

7.1.3.5.1 Attributes

# Attribute Type Description
IfcRoot
1 GlobalId IfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world.
2 OwnerHistory OPTIONAL 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.
3 Name OPTIONAL 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.
4 Description OPTIONAL IfcText Optional description, provided for exchanging informative comments.
IfcPropertyDefinition
HasContext SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions
HasAssociations SET [0:?] OF IfcRelAssociates FOR RelatedObjects 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.
IfcPropertySetDefinition
DefinesType SET [0:?] OF IfcTypeObject FOR HasPropertySets 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.
IsDefinedBy SET [0:?] OF IfcRelDefinesByTemplate FOR RelatedPropertySets 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.
DefinesOccurrence SET [0:?] OF IfcRelDefinesByProperties FOR RelatingPropertyDefinitionReference 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.
IfcPreDefinedPropertySet
IfcWindowLiningProperties
5 LiningDepth OPTIONAL IfcPositiveLengthMeasure Depth of the window lining (dimension measured perpendicular to window elevation plane).
6 LiningThickness OPTIONAL 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.
7 TransomThickness OPTIONAL 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.
8 MullionThickness OPTIONAL 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.
9 FirstTransomOffset OPTIONAL 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.
10 SecondTransomOffset OPTIONAL 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.
11 FirstMullionOffset OPTIONAL 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.
12 SecondMullionOffset OPTIONAL 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.
13 ShapeAspectStyle OPTIONAL 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 ($).
14 LiningOffset OPTIONAL 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.
15 LiningToPanelOffsetXOPTIONAL 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.
16 LiningToPanelOffsetYOPTIONAL 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.

7.1.3.5.2 Entity inheritance

dot_inheritance IfcWindowLiningProperties IfcWindowLiningProperties IfcPreDefinedPropertySet IfcPreDefinedPropertySet IfcWindowLiningProperties->IfcPreDefinedPropertySet IfcPreDefinedPropertySet_children 5 more... IfcPreDefinedPropertySet_children->IfcPreDefinedPropertySet IfcPropertySetDefinition IfcPropertySetDefinition IfcPreDefinedPropertySet->IfcPropertySetDefinition IfcPropertySet IfcPropertySet IfcPropertySet->IfcPropertySetDefinition IfcPropertyDefinition IfcPropertyDefinition IfcPropertySetDefinition->IfcPropertyDefinition IfcQuantitySet IfcQuantitySet IfcQuantitySet->IfcPropertySetDefinition IfcPropertyTemplateDefinition IfcPropertyTemplateDefinition IfcPropertyTemplateDefinition->IfcPropertyDefinition IfcRoot IfcRoot IfcPropertyDefinition->IfcRoot IfcObjectDefinition IfcObjectDefinition IfcObjectDefinition->IfcRoot IfcRelationship IfcRelationship IfcRelationship->IfcRoot

7.1.3.5.3 Definitions applying to General Usage

7.1.3.5.3.1 Identity

IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.

7.1.3.5.3.2 Revision Control

Ownership, history, and merge state is captured using IfcOwnerHistory.

7.1.3.5.4 Formal representations

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 
(
 ('IFC4X3_DEV.IFCWINDOWTYPE' IN TYPEOF(SELF\IfcPropertySetDefinition.DefinesType[1]))
  OR
 ('IFC4X3_DEV.IFCWINDOWSTYLE' IN TYPEOF(SELF\IfcPropertySetDefinition.DefinesType[1]))
);
END_ENTITY;