IfcProject

IfcProject

Definition from IAI: The undertaking of some design, engineering, construction, or maintenance activities leading towards a product. The project establishes the context for information to be exchanged or shared, and it may represent a construction project but does not have to.

The representation context, in the case of a geometric representation context, which is referenced from the IfcProject, includes:

the default units used
the world coordinate system
the coordinate space dimension
the precision used within the geometric representations, and
optionally the indication of the true north relative to the world coordinate system

HISTORY: New Entity in IFC Release 1.0.

Informal propositions:

There shall only be one project within the exchange context.

EXPRESS specification:

ENTITY IfcProject

SUBTYPE OF (

IfcObject);

LongName

OPTIONAL IfcLabel;

Phase

OPTIONAL IfcLabel;

RepresentationContexts

SET [1:?] OF IfcRepresentationContext;

UnitsInContext

IfcUnitAssignment;

WHERE

WR1

EXISTS(SELF\IfcRoot.Name);

END_ENTITY;

Attribute definitions:

LongName	:	Long name for the project as used for reference purposes.
Phase	:	Current project phase, open to interpretation for all project partner, therefore given as IfcString.
RepresentationContexts	:	Context of the representations used within the project. It includes the units used within the project and, in case of given shape representations, also the world coordinate system and the coordinate space dimensions.
UnitsInContext	:	Units globally assigned to measure types used within the context of this project.

Formal Propositions:

WR1

The Name attribute has to be provided for the project. It is the short name for the project.

Inheritance graph

ENTITY IfcProject;

ENTITY IfcRoot;

GlobalId

IfcGloballyUniqueId;

OwnerHistory

IfcOwnerHistory;

Name

OPTIONAL IfcLabel;

Description

OPTIONAL IfcText;

ENTITY IfcObject;

ObjectType

OPTIONAL IfcLabel;

INVERSE

IsDefinedBy

SET OF IfcRelDefines FOR RelatedObjects;

HasAssociations

SET OF IfcRelAssociates FOR RelatedObjects;

HasAssignments

SET OF IfcRelAssigns FOR RelatedObjects;

Decomposes

SET [0:1] OF IfcRelDecomposes FOR RelatedObjects;

IsDecomposedBy

SET OF IfcRelDecomposes FOR RelatingObject;

ENTITY IfcProject;

LongName

OPTIONAL IfcLabel;

Phase

OPTIONAL IfcLabel;

RepresentationContexts

SET [1:?] OF IfcRepresentationContext;

UnitsInContext

IfcUnitAssignment;

END_ENTITY;