5.3.3.9 IfcWorkControl

Contrôle des travaux
Arbeitskontrolle

An IfcWorkControl is an abstract supertype which captures information that is common to both IfcWorkPlan and IfcWorkSchedule.

HISTORY  New entity in IFC2x
CHANGE IFC4  Corrected assignment of resources to work control in documentation. Assignment of tasks to work control updated based on changes of task time definitions and the introduction of a summary task. Identifier has been renamed (now Identification) and promoted to supertype IfcControl

A work control may have resources assigned to it. This is handled by the IfcRelAssignsToControl relationship. A work control should also define a context that gives further information about its usage. If no special context information is required then the IfcProject instance as a global context should be used instead. An explicit link between the work control and the IfcProject via IfcRelDeclares should then be provided.

The attribute IfcWorkControl.Purpose is used to define the purpose of either a work schedule or a work plan. In the case of IfcWorkPlan, the purpose attribute can be used to determine if the work plan is for cost estimating, task scheduling or some other defined purpose.


Common Use Definitions

The following concepts are inherited at supertypes:

 Instance diagram

Property Sets for Objects

The Property Sets for Objects concept applies to this entity as shown in Table 17.
PredefinedTypeName
 Pset_WorkControlCommon

Table 17 — IfcWorkControl Property Sets for Objects



Control Assignment

The Control Assignment concept applies to this entity.

From IFC4 onwards the assignment of tasks to the work control is handled by the IfcRelAssignsToControl relationship. IfcRelAssignsTasks as used in previous IFC releases has been deleted and can not be used any longer. Another change in IFC4 is that it is not necessary to assign each task to a work control as it is regarded to be sufficient if the summary task (root task in the task hierarchy defined through IfcRelNests relationships) is assigned to a work control.




XSD Specification:

 <xs:element name="IfcWorkControl" type="ifc:IfcWorkControl" abstract="true" substitutionGroup="ifc:IfcControl" nillable="true"/>
 <xs:complexType name="IfcWorkControl" abstract="true">
  <xs:complexContent>
   <xs:extension base="ifc:IfcControl">
    <xs:sequence>
     <xs:element name="Creators" nillable="true" minOccurs="0">
      <xs:complexType>
       <xs:sequence>
        <xs:element ref="ifc:IfcPerson" maxOccurs="unbounded"/>
       </xs:sequence>
       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcPerson"/>
       <xs:attribute ref="ifc:cType" fixed="set"/>
       <xs:attribute ref="ifc:arraySize" use="optional"/>
      </xs:complexType>
     </xs:element>
    </xs:sequence>
    <xs:attribute name="CreationDate" type="ifc:IfcDateTime" use="optional"/>
    <xs:attribute name="Purpose" type="ifc:IfcLabel" use="optional"/>
    <xs:attribute name="Duration" type="ifc:IfcDuration" use="optional"/>
    <xs:attribute name="TotalFloat" type="ifc:IfcDuration" use="optional"/>
    <xs:attribute name="StartTime" type="ifc:IfcDateTime" use="optional"/>
    <xs:attribute name="FinishTime" type="ifc:IfcDateTime" use="optional"/>
   </xs:extension>
  </xs:complexContent>
 </xs:complexType>

EXPRESS Specification:

ENTITY IfcWorkControl
ABSTRACT SUPERTYPE OF(ONEOF(IfcWorkPlan, IfcWorkSchedule))
SUBTYPE OF IfcControl;
CreationDate : IfcDateTime;
Creators : OPTIONAL SET [1:?] OF IfcPerson;
Purpose : OPTIONAL IfcLabel;
Duration : OPTIONAL IfcDuration;
TotalFloat : OPTIONAL IfcDuration;
StartTime : IfcDateTime;
FinishTime : OPTIONAL IfcDateTime;
END_ENTITY;

Link to EXPRESS-G diagram EXPRESS-G diagram

Attribute Definitions:

CreationDate : The date that the plan is created.
Creators : The authors of the work plan.
Purpose : A description of the purpose of the work schedule.
Duration : The total duration of the entire work schedule.
TotalFloat : The total time float of the entire work schedule.
StartTime : The start time of the schedule.
FinishTime : The finish time of the schedule.

Inheritance Graph:

ENTITY IfcWorkControl
ENTITY IfcRoot
GlobalId : IfcGloballyUniqueId;
OwnerHistory : OPTIONAL IfcOwnerHistory;
Name : OPTIONAL IfcLabel;
Description : OPTIONAL IfcText;
ENTITY IfcObjectDefinition
INVERSE
HasAssignments : SET OF IfcRelAssigns FOR RelatedObjects;
Nests : SET [0:1] OF IfcRelNests FOR RelatedObjects;
IsNestedBy : SET OF IfcRelNests FOR RelatingObject;
HasContext : SET [0:1] OF IfcRelDeclares FOR RelatedDefinitions;
IsDecomposedBy : SET OF IfcRelAggregates FOR RelatingObject;
Decomposes : SET [0:1] OF IfcRelAggregates FOR RelatedObjects;
HasAssociations : SET OF IfcRelAssociates FOR RelatedObjects;
ENTITY IfcObject
ObjectType : OPTIONAL IfcLabel;
INVERSE
IsDeclaredBy : SET [0:1] OF IfcRelDefinesByObject FOR RelatedObjects;
Declares : SET OF IfcRelDefinesByObject FOR RelatingObject;
IsTypedBy : SET [0:1] OF IfcRelDefinesByType FOR RelatedObjects;
IsDefinedBy : SET OF IfcRelDefinesByProperties FOR RelatedObjects;
ENTITY IfcControl
Identification : OPTIONAL IfcIdentifier;
INVERSE
Controls : SET OF IfcRelAssignsToControl FOR RelatingControl;
ENTITY IfcWorkControl
CreationDate : IfcDateTime;
Creators : OPTIONAL SET [1:?] OF IfcPerson;
Purpose : OPTIONAL IfcLabel;
Duration : OPTIONAL IfcDuration;
TotalFloat : OPTIONAL IfcDuration;
StartTime : IfcDateTime;
FinishTime : OPTIONAL IfcDateTime;
END_ENTITY;

Link to this page  Link to this page