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The element type IfcDoorType defines commonly shared information for occurrences of doors. The set of shared information may include:

A door type defines the particular parameter of the lining and one (or several) panels through the IfcDoorLiningProperties and the IfcDoorPanelProperties as predefined property sets applicable to doors only.

It is used to define a door specification, or door style (i.e. the specific product information that is common to all occurrences of that door type). Door types may be exchanged without being already assigned to occurrences.

NOTE  The product representations are defined as representation maps (at the level of the supertype IfcTypeProduct, which gets assigned by an element occurrence instance through the IfcShapeRepresentation.Item[1] being an IfcMappedItem.

Occurrences of the IfcDoorType within building models are represented by instances of IfcDoor or IfcDoorStandardCase.

HISTORY  New entity in IFC4. The entity IfcDoorType replaces the previous definition IfcDoorStyle (which is deprecated in IFC4).

Operation type use definition

The IfcDoorTypeOperationEnum defines the general layout of the door type and its symbolic presentation. Depending on the enumerator, the appropriate instances of IfcDoorLiningProperties and IfcDoorPanelProperties are attached in the list of HasPropertySets. The IfcDoorTypeOperationEnum mainly determines the hinge side (left hung, or right hung), the operation (swinging, sliding, folding, etc.) and the number of panels.

NOTE  There are different definitions in various countries on what a left opening or left hung or left swing door is (same for right). Therefore the IFC definition may derivate from the local standard and may need to be mapped appropriately.

See geometry use definitions at IfcDoorTypeOperationEnum for the correct usage of opening symbols for different operation types.

Material Use Definition

The material of the IfcDoorType 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.

The following keywords for IfcMaterialConstituentSet.MaterialConstituents[n].Name shall be used:

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

Property Set Use Definition:

The shared property sets relating to the IfcDoorType are defined by the IfcPropertySet and are attached by the HasPropertySets attribute. The following property set definitions specific to the IfcDoorType are part of this IFC release:

NOTE  There is no differentiation between properties within the property set that are only assignable to IfcDoorType and those that are only assignable to IfcDoor. If the same property is assigned to the IfcDoorType and the IfcDoor being an occurrence of the IfcDoorType, then the occurrence property overrides the type property.

Two subtypes of IfcPreDefinedPropertySet are applicable to IfcDoorType:

Geometry Use Definitions:

The IfcDoorType may define the common shape of door occurrences. The common shape can be defined by

Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Type Body Geometry

The Type Body Geometry concept applies to this entity.

XSD Specification:

 <xs:element name="IfcDoorType" type="ifc:IfcDoorType" substitutionGroup="ifc:IfcBuildingElementType" nillable="true"/>
 <xs:complexType name="IfcDoorType">
   <xs:extension base="ifc:IfcBuildingElementType">
    <xs:attribute name="PredefinedType" type="ifc:IfcDoorTypeEnum" use="optional"/>
    <xs:attribute name="OperationType" type="ifc:IfcDoorTypeOperationEnum" use="optional"/>
    <xs:attribute name="ParameterTakesPrecedence" type="xs:boolean" use="optional"/>
    <xs:attribute name="UserDefinedOperationType" type="ifc:IfcLabel" use="optional"/>

EXPRESS Specification:

ENTITY IfcDoorType
SUBTYPE OF IfcBuildingElementType;
PredefinedType : IfcDoorTypeEnum;
OperationType : IfcDoorTypeOperationEnum;
ParameterTakesPrecedence : OPTIONAL BOOLEAN;
UserDefinedOperationType : OPTIONAL IfcLabel;
CorrectPredefinedType : (PredefinedType <> IfcDoorTypeEnum.USERDEFINED) OR ((PredefinedType = IfcDoorTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcElementType.ElementType));

Link to EXPRESS-G diagram EXPRESS-G diagram

Attribute Definitions:

PredefinedType : Identifies the predefined types of a door element from which the type required may be set.
OperationType : Type defining the general layout and operation of the door type in terms of the partitioning of panels and panel operations.
ParameterTakesPrecedence : The Boolean value reflects, whether the parameter given in the attached lining and panel properties exactly define the geometry (TRUE), or whether the attached style shape take precedence (FALSE). In the last case the parameter have only informative value. If not provided, no such information can be infered.
UserDefinedOperationType : Designator for the user defined operation type, shall only be provided, if the value of OperationType is set to USERDEFINED.

Formal Propositions:

CorrectPredefinedType : The inherited attribute ElementType shall be provided, if the PredefinedType is set to USERDEFINED.

Inheritance Graph:

ENTITY IfcDoorType
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcTypeObject
ApplicableOccurrence : OPTIONAL IfcIdentifier;
HasPropertySets : OPTIONAL SET [1:?] OF IfcPropertySetDefinition;
Types : SET [0:1] OF IfcRelDefinesByType FOR RelatingType;
ENTITY IfcTypeProduct
RepresentationMaps : OPTIONAL LIST [1:?] OF UNIQUE IfcRepresentationMap;
Tag : OPTIONAL IfcLabel;
ReferencedBy : SET OF IfcRelAssignsToProduct FOR RelatingProduct;
ENTITY IfcElementType
ElementType : OPTIONAL IfcLabel;
ENTITY IfcBuildingElementType
ENTITY IfcDoorType
PredefinedType : IfcDoorTypeEnum;
OperationType : IfcDoorTypeOperationEnum;
ParameterTakesPrecedence : OPTIONAL BOOLEAN;
UserDefinedOperationType : OPTIONAL IfcLabel;

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