IfcConstructionMaterialResource

Natural language names
deBaumaterial - Ressource
enConstruction Material Resource
frMatériaux de construction
Change log
ItemSPFXMLChangeDescription
IFC2x3 to IFC4
    IfcConstructionMaterialResource
      OwnerHistoryMODIFIEDInstantiation changed to OPTIONAL.
      IdentificationXMODIFIEDName changed from ResourceIdentifier to Identification.
      LongDescriptionMODIFIEDName changed from ResourceGroup to LongDescription.
Type changed from IfcLabel to IfcText.
      UsageXXMODIFIEDName changed from ResourceConsumption to Usage.
Type changed from IfcResourceConsumptionEnum to IfcResourceTime.
      BaseCostsXXMODIFIEDName changed from BaseQuantity to BaseCosts.
Type changed from IfcMeasureWithUnit to IfcAppliedValue.
Aggregation changed from NONE to LIST.
      BaseQuantityXXMODIFIEDName changed from Suppliers to BaseQuantity.
Type changed from IfcActorSelect to IfcPhysicalQuantity.
Aggregation changed from SET to NONE.
      PredefinedTypeXXMODIFIEDName changed from UsageRatio to PredefinedType.
Type changed from IfcRatioMeasure to IfcConstructionMaterialResourceTypeEnum.
Semantic definitions at the entity
Entity definition

IfcConstructionMaterialResource identifies a material resource type in a construction project.

HISTORY  New entity in IFC2.0.
IFC4 CHANGE  The attribute Suppliers has been deleted; use IfcRelAssignsToResource to assign an IfcActor to fulfill the role as a supplier. The attribute UsageRatio has been deleted; use BaseQuantityConsumed and BaseQuantityProduced to indicate material usage.

Occurrences of IfcConstructionMaterialResource are consumed (wholly or partially), or occupied during a construction work task (IfcTask).

Similar to IfcConstructionProductResource, sometimes things such as 5000kg of gravel are already instantiated as an instance of an IfcProduct subtype because it is a result of a work task (for example, ‘transporting gravel’). In this case, the instance of IfcConstructionMaterialResource can be associated with the product instance ‘5000kg of gravel’ to provide more information for resource uses. Nevertheless, IfcConstructionMaterialResource should only be used to represent resource usage, but not product substances.

NOTE  This entity is not the same as IfcMaterial. One one hand, IfcConstructionMaterialResource represents usage of bulk materials such as sand, gravels, nails and so on. Physical manifestations can be instantiated from IfcProduct as well, depending on their uses in the system, and such an IfcProduct object can be assigned to the IfcConstructionMaterialResource object via IfcRelAssignsToResource. On the other hand, IfcMaterial is about physical materials that a physical building element consists of, possibly with detailed material layering information."
Attribute definitions
#AttributeTypeCardinalityDescription C
11PredefinedTypeIfcConstructionMaterialResourceTypeEnum[0:1] Defines types of construction material resources. X
Inherited definitions from supertypes
Entity inheritance IfcConstructionResource IfcResource IfcObject IfcObjectDefinition IfcRoot
Attribute inheritance
#AttributeTypeCardinalityDescriptionC
IfcRoot
1GlobalIdIfcGloballyUniqueId[1:1] Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory[0:1] Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
NOTE  only the last modification in stored - either as addition, deletion or modification.
X
3NameIfcLabel[0:1] Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule. X
4DescriptionIfcText[0:1] Optional description, provided for exchanging informative comments.X
IfcObjectDefinition
HasAssignmentsIfcRelAssigns
@RelatedObjects		S[0:?]Reference to the relationship objects, that assign (by an association relationship) other subtypes of IfcObject to this object instance. Examples are the association to products, processes, controls, resources or groups.X
NestsIfcRelNests
@RelatedObjects		S[0:1]References to the decomposition relationship being a nesting. It determines that this object definition is a part within an ordered whole/part decomposition relationship. An object occurrence or type can only be part of a single decomposition (to allow hierarchical strutures only). X
IsNestedByIfcRelNests
@RelatingObject		S[0:?]References to the decomposition relationship being a nesting. It determines that this object definition is the whole within an ordered whole/part decomposition relationship. An object or object type can be nested by several other objects (occurrences or types). X
HasContextIfcRelDeclares
@RelatedDefinitions		S[0:1]References to the context providing context information such as project unit or representation context. It should only be asserted for the uppermost non-spatial object. X
IsDecomposedByIfcRelAggregates
@RelatingObject		S[0:?]References to the decomposition relationship being an aggregation. It determines that this object definition is whole within an unordered whole/part decomposition relationship. An object definitions can be aggregated by several other objects (occurrences or parts). X
DecomposesIfcRelAggregates
@RelatedObjects		S[0:1]References to the decomposition relationship being an aggregation. It determines that this object definition is a part within an unordered whole/part decomposition relationship. An object definitions can only be part of a single decomposition (to allow hierarchical strutures only). X
HasAssociationsIfcRelAssociates
@RelatedObjects		S[0:?]Reference to the relationship objects, that associates external references or other resource definitions to the object.. Examples are the association to library, documentation or classification.X
IfcObject
5ObjectTypeIfcLabel[0:1] The type denotes a particular type that indicates the object further. The use has to be established at the level of instantiable subtypes. In particular it holds the user defined type, if the enumeration of the attribute PredefinedType is set to USERDEFINED.
X
IsDeclaredByIfcRelDefinesByObject
@RelatedObjects		S[0:1]Link to the relationship object pointing to the declaring object that provides the object definitions for this object occurrence. The declaring object has to be part of an object type decomposition. The associated IfcObject, or its subtypes, contains the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes. X
DeclaresIfcRelDefinesByObject
@RelatingObject		S[0:?]Link to the relationship object pointing to the reflected object(s) that receives the object definitions. The reflected object has to be part of an object occurrence decomposition. The associated IfcObject, or its subtypes, provides the specific information (as part of a type, or style, definition), that is common to all reflected instances of the declaring IfcObject, or its subtypes. X
IsTypedByIfcRelDefinesByType
@RelatedObjects		S[0:1]Set of relationships to the object type that provides the type definitions for this object occurrence. The then associated IfcTypeObject, or its subtypes, contains the specific information (or type, or style), that is common to all instances of IfcObject, or its subtypes, referring to the same type. X
IsDefinedByIfcRelDefinesByProperties
@RelatedObjects		S[0:?]Set of relationships to property set definitions attached to this object. Those statically or dynamically defined properties contain alphanumeric information content that further defines the object. X
IfcResource
6IdentificationIfcIdentifier[0:1] An identifying designation given to a resource. It is the identifier at the occurrence level. X
7LongDescriptionIfcText[0:1] A detailed description of the resource (e.g. the skillset for a labor resource). X
ResourceOfIfcRelAssignsToResource
@RelatingResource		S[0:?]Set of relationships to other objects, e.g. products, processes, controls, resources or actors, for which this resource object is a resource.X
IfcConstructionResource
8UsageIfcResourceTime[0:1] Indicates the work, usage, and times scheduled and completed. Some attributes on this object may have associated constraints or time series; see documentation of IfcResourceTime for specific usage. If the resource is nested, then certain values may be calculated based on the component resources as indicated at IfcResourceTime. X
9BaseCostsIfcAppliedValueL[1:?] Indicates the unit costs for which accrued amounts should be calculated. Such unit costs may be split into Name designations (for example, 'Standard', 'Overtime'), and may contain a hierarchy of cost values that apply at different dates (using IfcCostValue.ApplicableDate and IfcCostValue.FixedUntilDate). X
10BaseQuantityIfcPhysicalQuantity[0:1] Identifies the base quantity consumed of the resource relative to assignments. For crew, labour, subcontract, and equipment resources, this refers to IfcQuantityTime. For material resources, this refers to IfcQuantityVolume. For product resources, this refers to IfcQuantityCount. X
IfcConstructionMaterialResource
11PredefinedTypeIfcConstructionMaterialResourceTypeEnum[0:1] Defines types of construction material resources. X
Definitions applying to Common Use Definitions

 Instance diagram

Concept usage

Object Typing

The Object Typing concept applies to this entity as shown in Table 292.

Type
IfcConstructionMaterialResourceType
IfcConstructionResourceType

Table 292 — IfcConstructionMaterialResource Object Typing



Quantity Sets

The Quantity Sets concept applies to this entity as shown in Table 293.

Name
Qto_ConstructionMaterialResourceBaseQuantities

Table 293 — IfcConstructionMaterialResource Quantity Sets



Resource Type Assignment

The Resource Type Assignment concept applies to this entity as shown in Table 294.

TypeDescription
IfcGeographicElementIndicates a physical element manifesting the resource such as a pile of sand.

Table 294 — IfcConstructionMaterialResource Resource Type Assignment



Resource Cost

The Resource Cost concept applies to this entity as shown in Table 295.

CostTypeCostNameValueTypeDescription
IfcCostValueMaterialIfcMonetaryMeasureThe amount incurred per unit volume of the material.

Table 295 — IfcConstructionMaterialResource Resource Cost



Resource Quantity

The Resource Quantity concept applies to this entity as shown in Table 296.

QuantityTypeQuantityNameDescription
IfcQuantityVolumeGrossVolumeThe unit volume of material used, such as cubic meters of concrete.

Table 296 — IfcConstructionMaterialResource Resource Quantity



Concept inheritance

#ConceptModel View
IfcRoot
Software IdentityCommon Use Definitions
Revision ControlCommon Use Definitions
IfcObject
Object Occurrence Predefined TypeCommon Use Definitions
IfcConstructionResource
Document AssociationCommon Use Definitions
Constraint AssociationCommon Use Definitions
Property Sets for ObjectsCommon Use Definitions
Object NestingCommon Use Definitions
IfcConstructionMaterialResource
Object TypingCommon Use Definitions
Quantity SetsCommon Use Definitions
Resource Type AssignmentCommon Use Definitions
Resource CostCommon Use Definitions
Resource QuantityCommon Use Definitions
Formal representations
XSD Specification
 <xs:element name="IfcConstructionMaterialResource" type="ifc:IfcConstructionMaterialResource" substitutionGroup="ifc:IfcConstructionResource" nillable="true"/>
 <xs:complexType name="IfcConstructionMaterialResource">
  <xs:complexContent>
   <xs:extension base="ifc:IfcConstructionResource">
    <xs:attribute name="PredefinedType" type="ifc:IfcConstructionMaterialResourceTypeEnum" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>
EXPRESS Specification
ENTITY IfcConstructionMaterialResource
 SUBTYPE OF (IfcConstructionResource);
  PredefinedType : OPTIONAL IfcConstructionMaterialResourceTypeEnum;
 WHERE
  CorrectPredefinedType : NOT(EXISTS(PredefinedType)) OR (PredefinedType <> IfcConstructionMaterialResourceTypeEnum.USERDEFINED) OR ((PredefinedType = IfcConstructionMaterialResourceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

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