Natural language names
Sich verjüngender Festkörper - durch Rotation
Revolved Area Solid Tapered
Change log
Semantic definitions at the entity
Entity definition

IfcRevolvedAreaSolidTapered is defined by revolving a cross section along a circular arc. The cross section may change along the revolving sweep from the shape of the start cross section into the shape of the end cross section. Corresponding vertices of the start and end cross sections are then connected. The bounded surface may have holes which will sweep into holes in the solid.

The rotation axis is defined by:

The start cross section is defined by SELF\IfcSweptAreaSolid.SweptArea:

The end cross section is defined by EndSweptArea:

The solid is generated by transforming the start cross section into to end cross section. A start face, an end face (each defined by start and end cross sections), and one or more lateral faces. Each lateral face is a ruled surface defined by a pair of corresponding edges of the start and end section. The ruled surfaces are constructed in the cylindrical coordinate space defined by the supertype IfcRevolvedAreaSolid.

HISTORY  New entity in IFC4.

Informal Propositions:

  1. Mirroring within IfcDerivedProfileDef.Operator shall not be used
Attribute definitions
#AttributeTypeCardinalityDescription G
5EndSweptAreaIfcProfileDef X
Formal Propositions
CorrectProfileAssignmentThe SweptArea as start profile and the EndSweptArea as end profile shall be compatible.
Inherited definitions from supertypes
Entity inheritance IfcRevolvedAreaSolid IfcSweptAreaSolid IfcSolidModel IfcGeometricRepresentationItem IfcRepresentationItem
Attribute inheritance
S[0:1]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.
S[0:1]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.
IfcDimensionCountThe space dimensionality of this class, it is always 3. X
1SweptAreaIfcProfileDef The surface defining the area to be swept. It is given as a profile definition within the xy plane of the position coordinate system.X
2PositionIfcAxis2Placement3D? Position coordinate system for the resulting swept solid of the sweeping operation. The position coordinate system allows for re-positioning of the swept solid. If not provided, the swept solid remains within the position as determined by the cross section or by the directrix used for the sweeping operation.
IFC4 CHANGE  The attribute has been changed to OPTIONAL with upward compatibility for file-based exchange.
3AxisIfcAxis1Placement Axis about which revolution will take place.X
4AngleIfcPlaneAngleMeasure The angle through which the sweep will be made. This angle is measured from the plane of the swept area provided by the XY plane of the position coordinate system.X
:=IfcRepresentationItem() || IfcGeometricRepresentationItem () || IfcCurve() || IfcLine(Axis.Location, IfcRepresentationItem() || IfcGeometricRepresentationItem () || IfcVector(Axis.Z,1.0))
IfcLineThe line of the axis of revolution. X
5EndSweptAreaIfcProfileDef X
Formal representations
XML Specification
 <xs:element name="IfcRevolvedAreaSolidTapered" type="ifc:IfcRevolvedAreaSolidTapered" substitutionGroup="ifc:IfcRevolvedAreaSolid" nillable="true"/>
 <xs:complexType name="IfcRevolvedAreaSolidTapered">
   <xs:extension base="ifc:IfcRevolvedAreaSolid">
     <xs:element name="EndSweptArea" type="ifc:IfcProfileDef" nillable="true"/>
EXPRESS Specification
ENTITY IfcRevolvedAreaSolidTapered
 SUBTYPE OF (IfcRevolvedAreaSolid);
  EndSweptArea : IfcProfileDef;
  CorrectProfileAssignment : IfcTaperedSweptAreaProfiles(SELF\IfcSweptAreaSolid.SweptArea, SELF.EndSweptArea);

Link to EXPRESS-G diagram EXPRESS-G diagram

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