IfcCivilElementType

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcCivilElementType			ADDED

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	B
IfcRoot
1	GlobalId	IfcGloballyUniqueId	[1:1]	Assignment of a globally unique identifier within the entire software world.	X
2	OwnerHistory	IfcOwnerHistory	[0:1]	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 - either as addition, deletion or modification.	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
	HasAssignments	IfcRelAssigns @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
	Nests	IfcRelNests @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).
	IsNestedBy	IfcRelNests @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).	X
	HasContext	IfcRelDeclares @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.
	IsDecomposedBy	IfcRelAggregates @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).	X
	Decomposes	IfcRelAggregates @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).	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
IfcTypeObject
5	ApplicableOccurrence	-		This attribute is out of scope for this model view definition and shall not be set.
6	HasPropertySets	IfcPropertySetDefinition	S[1:?]	Set ~~list~~ of unique property sets, that are associated with the object type and are common to all object occurrences referring to this object type.	X
	Types	IfcRelDefinesByType @RelatingType	S[0:1]	Reference to the relationship IfcRelDefinedByType and thus to those occurrence objects, which are defined by this type.
IfcTypeProduct
7	RepresentationMaps	IfcRepresentationMap	~L[1:?]	List of unique representation maps. Each representation map describes a block definition of the shape of the product style. By providing more than one representation map, a multi-view block definition can be given.	X
8	Tag	-		This attribute is out of scope for this model view definition and shall not be set.
	ReferencedBy	IfcRelAssignsToProduct @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 type.
IfcElementType
9	ElementType	-		This attribute is out of scope for this model view definition and shall not be set.
IfcCivilElementType

Definitions applying to Bridge View

Instance diagram

This element captures re-usable definitions for piers and abutments. Such definitions may be fixed or parametric.

Piers are typically decomposed into piles, footings, and columns, where each may have rebar embedded. Each component may be connected using an element connection relationship, which is required for structural analysis, construction sequencing, and parametric layout.

Parametric layout may be accomplished by using one or more decomposed elements of variable shape connected to other elements of fixed shape.

Any element that may be stretched in one dimension (usually straight line but can be arbitrary curve) may provide a material profile set applied to an 'Axis' representation.
Any element that may be stretched in two dimensions (usually rectangular area but can be arbitrary boundary) may provide a material layer set applied to a 'FootPrint' representation.
Any element that may be stretched in three dimensions may provide a material constituent set applied to a 'Box' representation.

For components of a single material filling parametric constraints, material definitions may be used. For multiple components, connectivity relationships may be used to anchor elements such that if a dimension changes on one component, any connected components are repositioned and resized accordingly.

In addition to implicit parametric behavior, explicit parameters and formulas may be defined using constraint relationships.

Figure 65 — Bridge pier components

Concept usage

Type Element Aggregation

The Type Element Aggregation concept applies to this entity as shown in Table 13.

PredefinedType	RelatedObjects	Description
	IfcPile	Piles of piers and abutments
	IfcFooting	Footings of piers and abutments
	IfcColumn	Vertical segments of piers separated by construction joints
	IfcMember	Top segments of piers supporting bridge girder(s)

Table 13 — IfcCivilElementType Type Element Aggregation

Exchange
Import	O	O
Export	O	O

Type Axis Geometry

The Type Axis Geometry concept applies to this entity.

For bridge elements that may be parametrically positioned, the Axis representation indicates the path and boundary of how the component may be stretched. To support dynamic layout, either a parametric material association must be defined such as IfcMaterialProfileSet, or an aggregated element must exist having such parametric association and connected to other components along the Axis curve.

Exchange
Import	O	O
Export	O	O

Concept inheritance

#	Concept	Model View
IfcRoot
	Software Identity	Bridge View
	User Identity	Bridge View
	Object Ownership	Bridge View
IfcTypeObject
	Property Sets for Types	Bridge View
IfcCivilElementType
	Type Element Aggregation	Bridge View
	Type Axis Geometry	Bridge View

Formal representations

XSD Specification

 <xs:element name="IfcCivilElementType" type="ifc:IfcCivilElementType" substitutionGroup="ifc:IfcElementType" nillable="true"/>

 <xs:complexType name="IfcCivilElementType">

  <xs:complexContent>

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

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcCivilElementType

 SUBTYPE OF (IfcElementType);

END_ENTITY;

 EXPRESS-G diagram

Link to this page

	Tiefbau Element - Typ
	Civil Element Type

IfcCivilElementType

Semantic definitions at the entity

Inherited definitions from supertypes

Definitions applying to Bridge View

Formal representations