IfcMetric

Definition from IAI: An IfcMetric is used to capture quantitative resultant metrics that can be applied to objectives.

HISTORY: New Entity in IFC Release 2.0

Use Definition

IfcMetric is a subtype of IfcConstraint and may be associated with any subtype of IfcObject through the IfcRelAssociatesConstraint relationship in the IfcControlExtension schema.

The aim of IfcMetric is to capture the quantitative aspects of a constraint.

EXPRESS specification:

ENTITY IfcMetric

SUBTYPE OF (

IfcConstraint);

Benchmark

IfcBenchmarkEnum;

ValueSource

OPTIONAL IfcLabel;

DataValue

IfcMetricValueSelect;

END_ENTITY;

Attribute definitions:

Benchmark	:	Enumeration that identifies the type of benchmark data.
ValueSource	:	Reference source for data values.
DataValue	:	Value with data type defined by the DataType enumeration.

Inheritance graph

ENTITY IfcMetric;

ENTITY IfcConstraint;

Name

IfcLabel;

Description

OPTIONAL IfcText;

ConstraintGrade

IfcConstraintEnum;

ConstraintSource

OPTIONAL IfcLabel;

CreatingActor

OPTIONAL IfcActorSelect;

CreationTime

OPTIONAL IfcDateTimeSelect;

UserDefinedGrade

OPTIONAL IfcLabel;

INVERSE

ClassifiedAs

SET OF IfcConstraintClassificationRelationship FOR ClassifiedConstraint;

RelatesConstraints

SET OF IfcConstraintRelationship FOR RelatingConstraint;

IsRelatedWith

SET OF IfcConstraintRelationship FOR RelatedConstraints;

PropertiesForConstraint

SET OF IfcPropertyConstraintRelationship FOR RelatingConstraint;

Aggregates

SET OF IfcConstraintAggregationRelationship FOR RelatingConstraint;

IsAggregatedIn

SET OF IfcConstraintAggregationRelationship FOR RelatedConstraints;

ENTITY IfcMetric;

Benchmark

IfcBenchmarkEnum;

ValueSource

OPTIONAL IfcLabel;

DataValue

IfcMetricValueSelect;

END_ENTITY;