IfcSectionedSolid

Natural language names
Sectioned Solid
Change log
ItemSPFXMLChangeDescription
IFC4x1 Final 4.1.0.0
    IfcSectionedSolidADDED
IFC4x1 Final 4.1.0.0
    IfcSectionedSolidADDED
Semantic definitions at the entity
Entity definition

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

Attribute definitions
#AttributeTypeCardinalityDescription G
1DirectrixIfcCurve The curve used to define the sweeping operation. X
2CrossSectionsIfcProfileDefL[2:?] List of cross sections in sequential order along the Directrix. X
Formal Propositions
RuleDescription
DirectrixIs3DThe curve entity which is the underlying directrix shall have the dimensionality of 3.
ConsistentProfileTypesThe profile type (either AREA or CURVE) shall be consistent within the list of the profiles defining the cross sections.
SectionsSameTypeThe entity type for each section must be the same.
Inherited definitions from supertypes
Entity inheritance IfcSectionedSolidHorizontal IfcSolidModel IfcGeometricRepresentationItem IfcRepresentationItem
Attribute inheritance
#AttributeTypeCardinalityDescriptionG
IfcRepresentationItem
LayerAssignmentIfcPresentationLayerAssignment
@AssignedItems
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.
X
StyledByItemIfcStyledItem
@Item
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.
X
IfcGeometricRepresentationItem
IfcSolidModel
Dim
:=3
IfcDimensionCountThe space dimensionality of this class, it is always 3. X
IfcSectionedSolid
1DirectrixIfcCurve The curve used to define the sweeping operation. X
2CrossSectionsIfcProfileDefL[2:?] List of cross sections in sequential order along the Directrix. X
Formal representations
XML Specification
 <xs:element name="IfcSectionedSolid" type="ifc:IfcSectionedSolid" abstract="true" substitutionGroup="ifc:IfcSolidModel" nillable="true"/>
 <xs:complexType name="IfcSectionedSolid" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcSolidModel">
    <xs:sequence>
     <xs:element name="Directrix" type="ifc:IfcCurve" nillable="true"/>
     <xs:element name="CrossSections">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcProfileDef" minOccurs="2" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcProfileDef"/>
       <xs:attribute ref="ifc:cType" fixed="list"/>
       <xs:attribute ref="ifc:arraySize" use="optional"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcSectionedSolid
 ABSTRACT SUPERTYPE OF(IfcSectionedSolidHorizontal)
 SUBTYPE OF (IfcSolidModel);
  Directrix : IfcCurve;
  CrossSections : LIST [2:?] OF IfcProfileDef;
 WHERE
  DirectrixIs3D : Directrix.Dim = 3;
  ConsistentProfileTypes : SIZEOF(QUERY(temp <* CrossSections | CrossSections[1].ProfileType <> temp.ProfileType)) = 0;
  SectionsSameType : SIZEOF(QUERY(temp <* CrossSections | TYPEOF(CrossSections[1]) :<>: TYPEOF(temp))) = 0;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Link to this page  Link to this page