8.8.3.34 IfcSectionedSolid

AbV ⓘ

ABSTRACT This definition may not be instantiated

8.8.3.34.1 Semantic definition

An IfcSectionedSolid is an abstract base type for solids constructed by sweeping potentially variable cross sections along a directrix.

8.8.3.34.2 Entity inheritance

8.8.3.34.3 Attributes

#	Attribute	Type	Description
IfcRepresentationItem (2)
	LayerAssignment	SET [0:1] OF IfcPresentationLayerAssignment FOR AssignedItems	Assignment of the representation item to a single or multiple layer(s). The LayerAssignments can override a LayerAssignments of the IfcRepresentation it is used within the list of Items. IFC2x3-CHANGE The inverse attribute LayerAssignments has been added. IFC4-CHANGE The inverse attribute LayerAssignment has been restricted to max 1. Upward compatibility for file based exchange is guaranteed.
	StyledByItem	SET [0:1] OF IfcStyledItem FOR Item	Reference to the IfcStyledItem that provides presentation information to the representation, e.g. a curve style, including colour and thickness to a geometric curve. IFC2x3-CHANGE The inverse attribute StyledByItem has been added.
IfcSolidModel (1)
*	Dim	IfcDimensionCount	This attribute is formally derived. `3` The space dimensionality of this class, it is always 3.
Click to show 3 hidden inherited attributes
IfcSectionedSolid (2)
1	Directrix	IfcCurve	The curve used to define the sweeping operation.
2	CrossSections	LIST [2:?] OF IfcProfileDef	List of cross sections in sequential order along the Directrix.

Table 8.8.3.34.A

8.8.3.34.4 Formal propositions

Name	Description
ConsistentProfileTypes	No description available.
`SIZEOF(QUERY(temp <* CrossSections \| CrossSections[1].ProfileType <> temp.ProfileType)) = 0`
DirectrixIs3D	The curve entity which is the underlying directrix shall have the dimensionality of 3.
`Directrix.Dim = 3`
SectionsSameType	The entity type for each section must be the same.
`SIZEOF(QUERY(temp <* CrossSections \| TYPEOF(CrossSections[1]) :<>: TYPEOF(temp))) = 0`

Table 8.8.3.34.B

8.8.3.34.5 Formal representation

 ENTITY IfcSectionedSolid
 ABSTRACT SUPERTYPE OF (ONEOF
	(IfcSectionedSolidHorizontal))
 SUBTYPE OF (IfcSolidModel);
	Directrix : IfcCurve;
	CrossSections : LIST [2:?] OF IfcProfileDef;
 WHERE
	ConsistentProfileTypes : SIZEOF(QUERY(temp <* CrossSections | CrossSections[1].ProfileType <> temp.ProfileType)) = 0;
	DirectrixIs3D : Directrix.Dim = 3;
	SectionsSameType : SIZEOF(QUERY(temp <* CrossSections | TYPEOF(CrossSections[1]) :<>: TYPEOF(temp))) = 0;
END_ENTITY;