IfcFastener

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	A
IfcRoot
1	GlobalId	IfcGloballyUniqueId	[1:1]	Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	IfcOwnerHistory	[1:1]	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.	X
3	Name	IfcLabel	[0:1]	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
4	Description	IfcText	[0:1]	Optional description, provided for exchanging informative comments.	X
IfcObjectDefinition
	IsDecomposedBy	IfcRelDecomposes @RelatingObject	S[0:?]	Reference to the decomposition relationship, that allows this object to be the composition of other objects. An object can be decomposed by several other objects.	X
	Decomposes	IfcRelDecomposes @RelatedObjects	S[0:1]	References to the decomposition relationship, that allows this object to be a part of the decomposition. An object can only be part of a single decomposition (to allow hierarchical strutures only).	X
	HasAssociations	IfcRelAssociates @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
5	ObjectType	IfcLabel	[0:1]	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
	IsDefinedBy	IfcRelDefines @RelatedObjects	S[0:?]	Set of relationships to type or property (statically or dynamically defined) information that further define the object. In case of type information, the associated IfcTypeObject contains the specific information (or type, or style), that is common to all instances of IfcObject referring to the same type.	X
IfcProduct
6	ObjectPlacement	IfcObjectPlacement	[0:1]	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
7	Representation	IfcProductRepresentation	[0:1]	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
IfcElement
8	Tag	-		This attribute is out of scope for this model view definition and shall not be set.
	ConnectedTo	IfcRelConnectsElements @RelatingElement	S[0:?]	Reference to the element connection relationship. The relationship then refers to the other element to which this element is connected to.
	HasOpenings	IfcRelVoidsElement @RelatingBuildingElement	S[0:?]	Reference to the Voids Relationship that creates an opening in an element. An element can incorporate zero-to-many openings.	X
	IsConnectionRealization	IfcRelConnectsWithRealizingElements @RealizingElements	S[0:?]	Reference to the connection relationship with realizing element. The relationship then refers to the realizing element which provides the physical manifestation of the connection relationship.	X
	ConnectedFrom	IfcRelConnectsElements @RelatedElement	S[0:?]	Reference to the element connection relationship. The relationship then refers to the other element that is connected to this element.	X
	ContainedInStructure	IfcRelContainedInSpatialStructure @RelatedElements	S[0:1]	Containment relationship to the spatial structure element, to which the element is primarily associated.	X
IfcElementComponent
IfcFastener

Definitions applying to AISC Model View

Instance diagram

Concept usage

Properties on Occurrences

The Properties on Occurrences concept applies to this entity as shown in Table 35.

Property
AISC_EM11_Pset_Weld

Table 35 — IfcFastener Properties on Occurrences

Exchange
Import	O
Export	O

Placement

The Placement concept applies to this entity.

Exchange
Import	O
Export	O

Simple Path Geometry

The Simple Path Geometry concept applies to this entity.

Welding path is a theoretical contact line between the two parts to be joined. But it does not need to be precise information and the approximation is acceptable. The Curve for welding path should be either Polyline (IfcPolyline) or Composite Curve (IfcCompositeCurve). Segments of Composit Curve should be Polyline (IfcPolyline), Line (IfcLine), or Trimmed Curve(IfcTrimmedCurve). The Basis Curve of Trimmed Curve should be either Polyine, Line, or Circle (IfcCircle).

Exchange
Import	O
Export	O

Mapped Geometry

The Mapped Geometry concept applies to this entity.

Exchange
Import	O
Export	O

Realizing Connection

The Realizing Connection concept applies to this entity.

Exchange
Import	O
Export	O

Realizing Connection Singular

The Realizing Connection Singular concept applies to this entity.

There are case where weld on one piece a steel plate, which is wrapped to form a circle hollow profile column (see picture below). The seam of the column is welded. This single piece welding utilizes 'Realizing Connection Singular' concept.

Exchange
Import	O
Export	O

Material Solid

The Material Solid concept applies to this entity.

Exchange
Import	O
Export	O

Concept inheritance

#	Concept	Model View
IfcFastener
	Properties on Occurrences	AISC Model View
	Placement	AISC Model View
	Simple Path Geometry	AISC Model View
	Mapped Geometry	AISC Model View
	Realizing Connection	AISC Model View
	Realizing Connection Singular	AISC Model View
	Material Solid	AISC Model View

Formal representations

XSD Specification

 <xs:element name="IfcFastener" type="ifc:IfcFastener" substitutionGroup="ifc:IfcElementComponent" nillable="true"/>

 <xs:complexType name="IfcFastener">

  <xs:complexContent>

   <xs:extension base="ifc:IfcElementComponent"/>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcFastener

 SUPERTYPE OF(IfcMechanicalFastener)

 SUBTYPE OF (IfcElementComponent);

END_ENTITY;

 EXPRESS-G diagram

Link to this page

Standard fastener type designation	Description
'Glue'	A fastening connection where glue is used to join together elements.
'Weld'	A weld seam used to join together building elements.
'Jointing mortar'	Mortar used to join together building elements. The strength of the joint may be taken into consideration in calculations.

IfcFastener

Semantic definitions at the entity

Inherited definitions from supertypes

Definitions applying to AISC Model View

Formal representations