ifc:IfcShell

Element Group Information

Model

ifc:IfcClosedShell | ifc:IfcOpenShell
Children: ifc:IfcClosedShell, ifc:IfcOpenShell

Used By

Element ifc:IfcShellBasedSurfaceModel/ifc:SbsmBoundary

Source 

<xs:group name="IfcShell">
  <xs:choice>
    <xs:element ref="ifc:IfcClosedShell"/>
    <xs:element ref="ifc:IfcOpenShell"/>
  </xs:choice>
</xs:group>