4.1.1 Project Declaration

The project provides a directory of object types and property templates contained within using declaration relationships.

NOTE  The actual object occurrences used within the context of a project, such as walls, beams, air outlets, are assigned to a spatial hierarchy that is linked to the project using the aggregation hierarchy. See concept Spatial Decomposition for linking a spatial structure to the project.
HISTORY  New concept template enabled by schema enhancements in IFC4.

Figure 2 illustrates an instance diagram.

Project DeclarationIfcContextIfcLabelIfcLabelIfcLabelIfcRelDeclares

Figure 2 — Project Declaration

mvdXML Specification
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="ab1e2cfd-9f21-4f4a-b6af-cc26d84e45ac" name="Project Declaration" status="sample" applicableSchema="IFC4" applicableEntity="IfcContext">
  <Rules>
    <AttributeRule AttributeName="Declares">
      <EntityRules>
        <EntityRule EntityName="IfcRelDeclares">
          <AttributeRules>
            <AttributeRule RuleID="Type" AttributeName="RelatedDefinitions" />
          </AttributeRules>
        </EntityRule>
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="Phase">
      <EntityRules>
        <EntityRule EntityName="IfcLabel" />
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="ObjectType">
      <EntityRules>
        <EntityRule EntityName="IfcLabel" />
      </EntityRules>
    </AttributeRule>
    <AttributeRule AttributeName="LongName">
      <EntityRules>
        <EntityRule EntityName="IfcLabel" />
      </EntityRules>
    </AttributeRule>
  </Rules>
</ConceptTemplate>

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