# 7.3.3.6 IfcConstructionProductResourceType

AbRV ⓘ
RV ⓘ

## 7.3.3.6.1 Semantic definition

The resource type IfcConstructionProductType defines commonly shared information for occurrences of construction product resources. The set of shared information may include:

• common productivities
• common cost rates
• common properties within shared property sets

It is used to define a construction product resource specification (i.e. the specific resource information that is common to all occurrences of that resource). Resource types may be exchanged without being already assigned to occurrences.

Occurrences of the IfcConstructionProductResourceType are represented by instances of IfcConstructionProductResource.

Assignment use definition

In addition to assignments specified at the base class IfcConstructionResourceType, a construction product resource type may have assignments of its own using IfcRelAssignsToResource where RelatingResource refers to the IfcConstructionProductResourceType and RelatedObjects contains one or more IfcTypeProduct subtypes. Such relationship indicates the type of product to be used as input, which is instantiated as an occurrence assigned for each resource occurrence. There may be multiple chains of production where such product type may have its own task and resource types assigned.

## 7.3.3.6.5 Property sets

• Pset_ConstructionResource
• ScheduleWorkProgression
• ActualWorkTime
• RemainingWorkProgression
• ScheduleCost
• ActualCost
• RemainingCost
• ScheduleCompletion
• ActualCompletion

## 7.3.3.6.7 Formal representation

ENTITY IfcConstructionProductResourceType
SUBTYPE OF (IfcConstructionResourceType);
PredefinedType : IfcConstructionProductResourceTypeEnum;
WHERE
CorrectPredefinedType : (PredefinedType <> IfcConstructionProductResourceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcConstructionProductResourceTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcTypeResource.ResourceType));
END_ENTITY;