Link to this pageObjects may be composed into parts to indicate levels of detail, such as a building having multiple storeys, a framed wall having studs, or a task having subtasks. Composition may form a hierarchy of multiple levels, where an object must have a single parent, or if a top-level object then declared within the single project or a project library.
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<ConceptTemplate uuid="db1e5cb3-9a56-42c0-9633-90e92a89eff6" name="Surface Feature Adherence" applicableSchema="IFC4" applicableEntity="IfcElement">
<Rules>
<AttributeRule RuleID="HasSurfaceFeatures" AttributeName="HasSurfaceFeatures">
<EntityRules>
<EntityRule EntityName="IfcRelAdheresToElement">
<AttributeRules>
<AttributeRule RuleID="RelatedSurfaceFeatures" AttributeName="RelatedSurfaceFeatures">
<EntityRules>
<EntityRule EntityName="IfcSurfaceFeature">
<AttributeRules>
<AttributeRule RuleID="SurfaceFeatureName" AttributeName="Name">
<EntityRules>
<EntityRule EntityName="IfcLabel" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
</ConceptTemplate>
<ConceptTemplate uuid="9fcc5a66-22a7-41ac-9328-31759845d152" name="Type Element Aggregation" applicableSchema="IFC4" applicableEntity="IfcElementType">
<Rules>
<AttributeRule RuleID="PredefinedType" AttributeName="PredefinedType" />
<AttributeRule AttributeName="IsDecomposedBy">
<EntityRules>
<EntityRule EntityName="IfcRelAggregates">
<AttributeRules>
<AttributeRule RuleID="RelatedObjects" AttributeName="RelatedObjects">
<EntityRules>
<EntityRule EntityName="IfcElement" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
<AttributeRule AttributeName="Decomposes" />
</Rules>
</ConceptTemplate>
</SubTemplates>
</ConceptTemplate>