IfcLoadGroupTypeEnum

Item	SPF	XML	Change
IFC2x3 to IFC4
IfcLoadGroupTypeEnum
LOAD_COMBINATION_GROUP	X	X	DELETED

Semantic definitions at the type

Type definition

This enumeration is used to distinguish between different levels of load grouping. It allows to differentiate between load groups, load cases, and load combinations.

HISTORY New enumeration in IFC2x2.

IFC4 CHANGE LOAD_COMBINATION_GROUP deprecated. Load cases are directly assigned to load combinations with different factors for each load case—load combination pair by means of IfcRelAssignsToGroupByFactor.

Enumeration definition

Constant	Description
LOAD_GROUP	Groups instances of subtypes of IfcStructuralAction. It shall be used as a container for loads grouped together for specific purposes, such as loads which are part of a special load pattern.
LOAD_CASE	Groups LOAD_GROUPs and instances of subtypes of IfcStructuralAction. It should be used as a container for loads with the same origin.
LOAD_COMBINATION	An intermediate level between LOAD_CASE and LOAD_COMBINATION. This level is obsolete and deprecated. Before the introduction of IfcRelAssignsToGroupByFactor, the purpose of this level was to provide a factor with which one or more LOAD_CASEs occur in a LOAD_COMBINATION.
USERDEFINED	A grouping level which does not follow the standard hierarchy of load group types.
NOTDEFINED	The grouping level is not yet known.

Formal representations

XML Specification

 <xs:simpleType name="IfcLoadGroupTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="load_group"/>

   <xs:enumeration value="load_case"/>

   <xs:enumeration value="load_combination"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcLoadGroupTypeEnum = ENUMERATION OF (

 LOAD_GROUP, 
 LOAD_CASE, 
 LOAD_COMBINATION, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram