IfcStructuralLoadConfiguration

Item	SPF	XML	Change	Description
IFC2x3 to IFC4 4.0.0.0
IfcStructuralLoadConfiguration			ADDED

Semantic definitions at the entity

Entity definition

This class combines one or more load or result values in a 1- or 2-dimensional configuration.

HISTORY New entity in IFC4.

Informal Propositions:

All items in Values shall be of the same type.
If the loads or results comprise a curve activity, 1-dimensional locations shall be given, measured locally along the curve. The location shall not exceed the bounds of the curve actvity. The load samples and corresponding locations shall be given in ascending order of locations.
If the loads or results comprise a surface activity, 2-dimensional locations shall be given, measured in the surface activity's local x and y directions. The location shall not exceed the bounds of the surface activity.

NOTE There are no ordering requirements in the 2-dimensional case, but the 1-dimensional case shall be spatially ordered for simplicity.

Attribute definitions

#	Attribute	Type	Cardinality	Description	G
2	Values	IfcStructuralLoadOrResult	L[1:?]	List of load or result values.	X
3	Locations	IfcLengthMeasure	? L[1:?] L[1:2]	Locations of the load samples or result samples, given within the local coordinate system defined by the instance which uses this resource object. Each item in the list of locations pertains to the values list item at the same list index. This attribute is optional for configurations in which the locations are implicitly known from higher-level definitions.	X

Formal Propositions

Rule	Description
ValidListSize	If locations are provided, there shall be as many location items as there are value items.

Inherited definitions from supertypes

Entity inheritance

Attribute inheritance

#	Attribute	Type	Cardinality	Description	G
IfcStructuralLoad
1	Name	IfcLabel	?	Optionally defines a name for this load.	X
IfcStructuralLoadConfiguration
2	Values	IfcStructuralLoadOrResult	L[1:?]	List of load or result values.	X
3	Locations	IfcLengthMeasure	? L[1:?] L[1:2]	Locations of the load samples or result samples, given within the local coordinate system defined by the instance which uses this resource object. Each item in the list of locations pertains to the values list item at the same list index. This attribute is optional for configurations in which the locations are implicitly known from higher-level definitions.	X

Formal representations

XML Specification

 <xs:element name="IfcStructuralLoadConfiguration" type="ifc:IfcStructuralLoadConfiguration" substitutionGroup="ifc:IfcStructuralLoad" nillable="true"/>

 <xs:complexType name="IfcStructuralLoadConfiguration">

  <xs:complexContent>

   <xs:extension base="ifc:IfcStructuralLoad">

    <xs:sequence>

     <xs:element name="Values">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcStructuralLoadOrResult" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcStructuralLoadOrResult"/>

       <xs:attribute ref="ifc:cType" fixed="list"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

     <xs:element name="Locations" nillable="true" minOccurs="0">

      <xs:complexType>

       <xs:sequence>

        <xs:element ref="ifc:IfcLengthMeasure-wrapper" minOccurs="1" maxOccurs="unbounded"/>

       </xs:sequence>

       <xs:attribute ref="ifc:itemType" fixed="ifc:IfcLengthMeasure-wrapper"/>

       <xs:attribute ref="ifc:cType" fixed="list-unique list"/>

       <xs:attribute ref="ifc:arraySize" use="optional"/>

      </xs:complexType>

     </xs:element>

    </xs:sequence>

   </xs:extension>

  </xs:complexContent>

 </xs:complexType>

EXPRESS Specification


ENTITY IfcStructuralLoadConfiguration

 SUBTYPE OF (IfcStructuralLoad);

  Values : LIST [1:?] OF IfcStructuralLoadOrResult;

  Locations : OPTIONAL LIST [1:?] OF UNIQUE LIST [1:2] OF IfcLengthMeasure;

 WHERE

  ValidListSize : NOT EXISTS(Locations) OR (SIZEOF(Locations) = SIZEOF(Values));
END_ENTITY;

 EXPRESS-G diagram

	Lastanordnung
	Structural Load Configuration