|Matériaux de construction|
|Baumaterial - Ressource|
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.
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."
Common Use Definitions
The following concepts are inherited at supertypes:
The Object Typing concept applies to this entity as shown in Table 293.
Table 293 — IfcConstructionMaterialResource Object Typing
The Quantity Sets concept applies to this entity as shown in Table 294.
Table 294 — IfcConstructionMaterialResource Quantity Sets
Resource Type Assignment
The Resource Type Assignment concept applies to this entity as shown in Table 295.
|IfcGeographicElement||Indicates a physical element manifesting the resource such as a pile of sand.|
Table 295 — IfcConstructionMaterialResource Resource Type Assignment
The Resource Cost concept applies to this entity as shown in Table 296.
Table 296 — IfcConstructionMaterialResource Resource Cost
The Resource Quantity concept applies to this entity as shown in Table 297.
|IfcQuantityVolume||GrossVolume||The unit volume of material used, such as cubic meters of concrete.|
Table 297 — IfcConstructionMaterialResource Resource Quantity
XSD Specification: <xs:element name="IfcConstructionMaterialResource" type="ifc:IfcConstructionMaterialResource" substitutionGroup="ifc:IfcConstructionResource" nillable="true"/>
<xs:attribute name="PredefinedType" type="ifc:IfcConstructionMaterialResourceTypeEnum" use="optional"/>
|CorrectPredefinedType|| : ||NOT(EXISTS(PredefinedType)) OR
(PredefinedType <> IfcConstructionMaterialResourceTypeEnum.USERDEFINED) OR
((PredefinedType = IfcConstructionMaterialResourceTypeEnum.USERDEFINED) AND EXISTS (SELF\IfcObject.ObjectType));|
|PredefinedType|| : ||
Defines types of construction material resources.
IFC4 New attribute.
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