Definition from IAI: The IfcChangeOrder represents a
change order in a construction project. A change order can reference to the
building elements such as walls to be changed through the control relationship
(IfcRelAssignedToControl) provided through IfcObject. A change
order can also reference to the design documents that are to be changed. The
document(s) that represents the change order itself can also be referenced
through the IfcRelAssociatesDocument from IfcObject. It also
specifies the cost estimate and work plan for the work requested by the change
order. In addition to the properties provided by IfcProjectOrder, it also
specify information such as change description, reasons for change, requested
start time and requested finish time.
HISTORY New Entity in IFC
Release 2.0.
ISSUES See issue and change
log for changes made in IFC Release 2x.
Use Definitions
An instance of IfcChangeOrder may be driven by requirements from one or
more documents (the design, specification, or plan documents etc.). Reference
to these documents is achieved through the INVERSE 'HasAssociations'
relationship from IfcObject to IfcRelAssociatesDocument. This relationship is
inherited by the IfcChangeOrder (the relation between the object and the
documents being managed by the instance of IfcRelAssociatesDocument)
