IfcApproval

BACnet MVD

#### IfcApproval

Natural language names

| Genehmigung
| Approval
| Approbation

Change log

Item | SPF | XML | Change | Description
--- | --- | --- | --- | ---
IFC2x3 to IFC4
IfcApproval |  |  |  |
Identifier |  |  | MODIFIED | Name changed from Description to Identifier. Type changed from IfcText to IfcIdentifier.
Name | X | X | MODIFIED | Name changed from ApprovalDateTime to Name. Type changed from IfcDateTimeSelect to IfcLabel. Instantiation changed to OPTIONAL.
Description |  |  | MODIFIED | Name changed from ApprovalStatus to Description. Type changed from IfcLabel to IfcText.
TimeOfApproval |  |  | MODIFIED | Name changed from ApprovalLevel to TimeOfApproval. Type changed from IfcLabel to IfcDateTime.
Status |  |  | MODIFIED | Name changed from ApprovalQualifier to Status. Type changed from IfcText to IfcLabel.
Level |  | X | MODIFIED | Name changed from Name to Level. Instantiation changed to OPTIONAL.
Qualifier |  |  | MODIFIED | Name changed from Identifier to Qualifier. Type changed from IfcIdentifier to IfcText. Instantiation changed to OPTIONAL.
RequestingApproval |  |  | ADDED |
GivingApproval |  |  | ADDED |

##### Semantic definitions at the entity

Entity definition

An IfcApproval represents information about approval processes such as for a plan, a design, a proposal, or a change order in a construction or facilities management project. IfcApproval is referenced by IfcRelAssociatesApproval in IfcControlExtension schema, and thereby can be related to all subtypes of IfcRoot. An approval may also be given to resource objects using IfcResourceApprovalRelationship

> HISTORY New entity in IFC2.0

> IFC4 CHANGE Attributes Identifier and Name made optional, where rule added to require at least one of them being asserted. Inverse attributes ApprovedObjects, ApprovedResources and HasExternalReferences added. Inverse attribute Properties deleted (more general relationship via inverse ApprovedResources to be used instead).

Attribute definitions

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
1 | Identifier | IfcIdentifier | ? | A computer interpretable identifier by which the approval is known. |  | X
2 | Name | IfcLabel | ? | A human readable name given to an approval. |  | X
3 | Description | IfcText | ? | A general textual description of a design, work task, plan, etc. that is being approved for. |  | X

4

TimeOfApproval

IfcDateTime

?

Date and time when the result of the approval process is produced.

> IFC4 CHANGE Attribute data type changed to IfcDateTime using ISO 8601 representation, renamed from ApprovalDateTime and made OPTIONAL.

X

5 | Status | IfcLabel | ? | The result or current status of the approval, e.g. Requested, Processed, Approved, Not Approved. |  | X
6 | Level | IfcLabel | ? | Level of the approval e.g. Draft v.s. Completed design. |  | X
7 | Qualifier | IfcText | ? | Textual description of special constraints or conditions for the approval. |  | X

8

RequestingApproval

IfcActorSelect

?

The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and requesting an approval.

> IFC4 CHANGE New attribute for approval request replacing IfcApprovalActorRelationship (being deleted).

X

9

GivingApproval

IfcActorSelect

?

The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and giving an approval.

> IFC4 CHANGE New attribute for approval provision replacing IfcApprovalActorRelationship (being deleted).

X

HasExternalReferences

IfcExternalReferenceRelationship
@RelatedResourceObjects

S[0:?]

Reference to external references, e.g. library, classification, or document information, that are associated to the Approval.

> IFC4 CHANGE New inverse attribute.

X

| ApprovedObjects | IfcRelAssociatesApproval @RelatingApproval | S[0:?] | Reference to the IfcRelAssociatesApproval instances associating this approval to objects (subtypes of IfcRoot |  | X
| ApprovedResources | IfcResourceApprovalRelationship @RelatingApproval | S[0:?] | The set of relationships by which resource objects that are are approved by this approval are known. |  | X
| IsRelatedWith | IfcApprovalRelationship @RelatedApprovals | S[0:?] | The set of relationships by which this approval is related to others. |  | X
| Relates | IfcApprovalRelationship @RelatingApproval | S[0:?] | The set of relationships by which other approvals are related to this one. |  | X

Formal Propositions

Rule | Description
--- | ---
HasIdentifierOrName | Either Identifier or Name (or both) by which the approval is known shall be given.

##### Inherited definitions from supertypes

Entity inheritance
Attribute inheritance

# | Attribute | Type | Cardinality | Description | B
--- | --- | --- | --- | --- | ---
IfcApproval
1 | Identifier | IfcIdentifier | ? | A computer interpretable identifier by which the approval is known. |  | X
2 | Name | IfcLabel | ? | A human readable name given to an approval. |  | X
3 | Description | IfcText | ? | A general textual description of a design, work task, plan, etc. that is being approved for. |  | X

4

TimeOfApproval

IfcDateTime

?

Date and time when the result of the approval process is produced.

> IFC4 CHANGE Attribute data type changed to IfcDateTime using ISO 8601 representation, renamed from ApprovalDateTime and made OPTIONAL.

X

5 | Status | IfcLabel | ? | The result or current status of the approval, e.g. Requested, Processed, Approved, Not Approved. |  | X
6 | Level | IfcLabel | ? | Level of the approval e.g. Draft v.s. Completed design. |  | X
7 | Qualifier | IfcText | ? | Textual description of special constraints or conditions for the approval. |  | X

8

RequestingApproval

IfcActorSelect

?

The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and requesting an approval.

> IFC4 CHANGE New attribute for approval request replacing IfcApprovalActorRelationship (being deleted).

X

9

GivingApproval

IfcActorSelect

?

The actor that is acting in the role specified at IfcOrganization or individually at IfcPerson and giving an approval.

> IFC4 CHANGE New attribute for approval provision replacing IfcApprovalActorRelationship (being deleted).

X

HasExternalReferences

IfcExternalReferenceRelationship
@RelatedResourceObjects

S[0:?]

Reference to external references, e.g. library, classification, or document information, that are associated to the Approval.

> IFC4 CHANGE New inverse attribute.

X

| ApprovedObjects | IfcRelAssociatesApproval @RelatingApproval | S[0:?] | Reference to the IfcRelAssociatesApproval instances associating this approval to objects (subtypes of IfcRoot |  | X
| ApprovedResources | IfcResourceApprovalRelationship @RelatingApproval | S[0:?] | The set of relationships by which resource objects that are are approved by this approval are known. |  | X
| IsRelatedWith | IfcApprovalRelationship @RelatedApprovals | S[0:?] | The set of relationships by which this approval is related to others. |  | X
| Relates | IfcApprovalRelationship @RelatingApproval | S[0:?] | The set of relationships by which other approvals are related to this one. |  | X

##### Formal representations

XML Specification
`<xs:element name="IfcApproval" type="ifc:IfcApproval" substitutionGroup="ifc:Entity" nillable="true"/>
<xs:complexType name="IfcApproval">
<xs:complexContent>
<xs:extension base="ifc:Entity">
<xs:sequence>
<xs:element name="RequestingApproval" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcActorSelect"/>
</xs:complexType>
</xs:element>
<xs:element name="GivingApproval" nillable="true" minOccurs="0">
<xs:complexType>
<xs:group ref="ifc:IfcActorSelect"/>
</xs:complexType>
</xs:element>
</xs:sequence>
<xs:attribute name="Identifier" type="ifc:IfcIdentifier" use="optional"/>
<xs:attribute name="Name" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="Description" type="ifc:IfcText" use="optional"/>
<xs:attribute name="TimeOfApproval" type="ifc:IfcDateTime" use="optional"/>
<xs:attribute name="Status" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="Level" type="ifc:IfcLabel" use="optional"/>
<xs:attribute name="Qualifier" type="ifc:IfcText" use="optional"/>
</xs:extension>
</xs:complexContent>
</xs:complexType>
`
EXPRESS Specification
`ENTITY IfcApproval;
Identifier : OPTIONAL IfcIdentifier;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
TimeOfApproval : OPTIONAL IfcDateTime;
Status : OPTIONAL IfcLabel;
Level : OPTIONAL IfcLabel;
Qualifier : OPTIONAL IfcText;
RequestingApproval : OPTIONAL IfcActorSelect;
GivingApproval : OPTIONAL IfcActorSelect;
INVERSE
HasExternalReferences : SET [0:?] OF IfcExternalReferenceRelationship FOR RelatedResourceObjects;
ApprovedObjects : SET [0:?] OF IfcRelAssociatesApproval FOR RelatingApproval;
ApprovedResources : SET [0:?] OF IfcResourceApprovalRelationship FOR RelatingApproval;
IsRelatedWith : SET [0:?] OF IfcApprovalRelationship FOR RelatedApprovals;
Relates : SET [0:?] OF IfcApprovalRelationship FOR RelatingApproval;
WHERE
HasIdentifierOrName : EXISTS (Identifier) OR EXISTS (Name);
END_ENTITY;

EXPRESS-G diagram

`

References: IfcRelAssociatesApproval IfcApprovalRelationship IfcResourceApprovalRelationship IfcResourceObjectSelect

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