IfcStructuralSurfaceActivityTypeEnum

Item	SPF	XML	Change	Description
IFC2x3 to IFC4
IfcStructuralSurfaceActivityTypeEnum			ADDED

Semantic definitions at the type

Type definition

This enumeration defines the distribution of load values in a surface action or reaction.

HISTORY New enumeration in IFC4

Enumeration definition

Constant	Description
CONST	The load has a constant value over its entire extent.
BILINEAR	The load value is bilinearly distributed over the load's extent.
DISCRETE	The load is specified as a series of discrete load points.
ISOCONTOUR	The load is specified by a series of iso-curves (level sets), i.e. curves at which the load value is constant. These curves run perpendicularly to the load gradient.
USERDEFINED	The load distribution is user-defined.
NOTDEFINED	The load distribution is undefined.

Formal representations

XSD Specification

 <xs:simpleType name="IfcStructuralSurfaceActivityTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="const"/>

   <xs:enumeration value="bilinear"/>

   <xs:enumeration value="discrete"/>

   <xs:enumeration value="isocontour"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcStructuralSurfaceActivityTypeEnum = ENUMERATION OF (

 CONST, 
 BILINEAR, 
 DISCRETE, 
 ISOCONTOUR, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram