Navigation

IfcConnectionConstraint

Definition from IAI: The connection constraint is an addional constraint that acts on an element connection. It can be used to describe either an expansion joint, edge condition, control joint.

HISTORY New Entity in IFC Release 2.0, entity has been renamed from IfcRelJoinsElements in IFC Release 2x.
ISSUES See issue and change logs for changes made in IFC Release 2x

EXPRESS specification:

ENTITY IfcConnectionConstraint;
WaterproofingRequired  :  LOGICAL;
VentilationRequired  :  LOGICAL;
JoinType  :  IfcJointEnum;
RangeOfMovement  :  IfcPositiveLengthMeasure;
FireRating  :  IfcTimeMeasure;
ConstraintOf  :  IfcRelConnectsElements;
END_ENTITY;

Attribute definitions:

WaterproofingRequired  :  Flag that indicates that the joint should be waterproof or not.
VentilationRequired  :  Is ventilation required for this joint?
JoinType  :  Purpose of the joint.
RangeOfMovement  :  Distance the joint can open before failing.
FireRating  :  Time duration for fire resistence the roof assembly is rated.
ConstraintOf  :  Refers to the connection relationship to which the constraint relates.

Inheritance graph

ENTITY IfcConnectionConstraint;
ENTITY IfcConnectionConstraint;
WaterproofingRequired  :  LOGICAL;
VentilationRequired  :  LOGICAL;
JoinType  :  IfcJointEnum;
RangeOfMovement  :  IfcPositiveLengthMeasure;
FireRating  :  IfcTimeMeasure;
ConstraintOf  :  IfcRelConnectsElements;
END_ENTITY;