Resources may be defined according to a base quantity, where assigned tasks consume such amount of resource relative to an output quantity.
For work-based resources such as labor and equipment, quantities are based on time. For product-based resources, quantities are based on count. For material-based resources, quantities are based on volume.
Figure 103 illustrates an instance diagram.
Figure 103 — Resource Quantity |
<?xml version="1.0"?>
<ConceptTemplate xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:xsd="http://www.w3.org/2001/XMLSchema" uuid="a057d708-23d4-47d2-a84d-89ffc93d8fe8" name="Resource Quantity" status="sample" applicableSchema="IFC4" applicableEntity="IfcConstructionResource">
<Rules>
<AttributeRule RuleID="QuantityType" AttributeName="BaseQuantity">
<EntityRules>
<EntityRule EntityName="IfcPhysicalSimpleQuantity">
<AttributeRules>
<AttributeRule RuleID="QuantityName" AttributeName="Name">
<EntityRules>
<EntityRule EntityName="IfcLabel" />
</EntityRules>
</AttributeRule>
</AttributeRules>
</EntityRule>
</EntityRules>
</AttributeRule>
</Rules>
</ConceptTemplate>