IfcWorkControl

Definition from IAI: An IfcWorkControl is an abstract supertype which captures information that is common to both IfcWorkPlan and IfcWorkSchedule

HISTORY: New class in IFC Release 2x

Use Definitions

A work control may have resources assigned to it, this is handled by the IfcRelAssignsToControl relationship. The assignment of tasks to the work control is handled by the IfcRelAssignsTasks relationship.

The inherited attributes have the following meaning:

IfcControl.Controls - references to the IfcRelAssignsTasks, that assign instances of IfcTask including time schedule controls.

IfcObject.HasAssignments - references to the IfcRelAssignsToResources, that assigns an instance of IfcResource to the IfcWorkControl.

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.

EXPRESS specification:

ENTITY IfcWorkControl

ABSTRACT SUPERTYPE OF

(ONEOF(IfcWorkPlan, IfcWorkSchedule))

SUBTYPE OF (

IfcControl);

Identifier

IfcIdentifier;

CreationDate

IfcDateTimeSelect;

Creators

OPTIONAL SET [1:?] OF IfcPerson;

Purpose

OPTIONAL IfcLabel;

Duration

OPTIONAL IfcTimeMeasure;

TotalFloat

OPTIONAL IfcTimeMeasure;

StartTime

IfcDateTimeSelect;

FinishTime

OPTIONAL IfcDateTimeSelect;

WorkControlType

OPTIONAL IfcWorkControlTypeEnum;

UserDefinedControlType

OPTIONAL IfcLabel;

WHERE

WR1

(WorkControlType <> IfcWorkControlTypeEnum.USERDEFINED) OR ((WorkControlType = IfcWorkControlTypeEnum.USERDEFINED) AND EXISTS(SELF\IfcWorkControl.UserDefinedControlType));

END_ENTITY;

Attribute definitions:

Identifier	:	Identifier of the work plan, given by user.
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.
WorkControlType	:	Predefined work control types from which that required may be set.
UserDefinedControlType	:	A user defined work control type.

Formal Propositions:

WR1

The attribute UserDefinedControlType must be asserted when the value of the IfcWorkControlTypeEnum is set to USERDEFINED.

Inheritance graph

ENTITY IfcWorkControl;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObjectDefinition;

INVERSE

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

IsDecomposedBy

SET OF IfcRelDecomposes FOR RelatingObject;

Decomposes

SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

ENTITY IfcControl;

INVERSE

Controls

SET OF IfcRelAssignsToControl FOR RelatingControl;

ENTITY IfcWorkControl;

Identifier

IfcIdentifier;

CreationDate

IfcDateTimeSelect;

Creators

OPTIONAL SET [1:?] OF IfcPerson;

Purpose

OPTIONAL IfcLabel;

Duration

OPTIONAL IfcTimeMeasure;

TotalFloat

OPTIONAL IfcTimeMeasure;

StartTime

IfcDateTimeSelect;

FinishTime

OPTIONAL IfcDateTimeSelect;

WorkControlType

OPTIONAL IfcWorkControlTypeEnum;

UserDefinedControlType

OPTIONAL IfcLabel;

END_ENTITY;