IfcMemberTypeEnum

Semantic definitions at the type

Type definition

This enumeration defines the different types of linear elements an IfcMember or IfcMemberType object can fulfill.

HISTORY New enumeration type in IFC2x2.

IFC2x2 CHANGE The additional identifiers CHORD, PLATE, STUD are added.

IFC2x3 CHANGE The additional identifier MULLION are added.

Enumeration definition

Constant	Description
BRACE	A linear element (usually sloped) often used for bracing of a girder or truss.
CHORD	Upper or lower longitudinal member of a truss, used horizontally or sloped.
COLLAR	A linear element (usually used horizontally) within a roof structure to connect rafters and posts.
MEMBER	A linear element within a girder or truss with no further meaning.
MULLION	A linear element within a curtain wall system to connect two (or more) panels.
PLATE	A linear continuous horizontal element in wall framing, such as a head piece or a sole plate.
POST	A linear (usually vertical) member used to support something or to mark a point.
PURLIN	A linear element (usually used horizontally) within a roof structure to support rafters.
RAFTER	A linear elements used to support roof slabs or roof covering, usually used with slope.
STRINGER	A linear element used to support stair or ramp flights, usually used with slope.
STRUT	A linear element often used within a girder or truss.
STUD	Vertical element in wall framing.
STIFFENING_RIB	A linear element added to a flange or a web plate of a girder for local stiffening.
ARCH_SEGMENT	Individual segment of an arch structure.
SUSPENSION_CABLE	A suspended element, typically comprising steel wire, sheath, etc.
SUSPENDER	A vertical element suspending a structure (such as bridge deck) from a suspension cable or an arch.
STAY_CABLE	A sloped element suspending a structure (such as bridge deck) from a pylon.
STRUCTURALCABLE	A linear cable element used to secure or stabilise a structure by resisting lateral and longitudinal loading through tension only, but cannot resist compression. usually formed of a flexible cable or wire.
TIEBAR	A linear bar element used to secure or stabilise a structure by resisting lateral and longitudinal loading through tension and or compression. usually formed by a solid bar.
USERDEFINED	User-defined linear element.
NOTDEFINED	Undefined linear element.

Formal representations

XML Specification

 <xs:simpleType name="IfcMemberTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="brace"/>

   <xs:enumeration value="chord"/>

   <xs:enumeration value="collar"/>

   <xs:enumeration value="member"/>

   <xs:enumeration value="mullion"/>

   <xs:enumeration value="plate"/>

   <xs:enumeration value="post"/>

   <xs:enumeration value="purlin"/>

   <xs:enumeration value="rafter"/>

   <xs:enumeration value="stringer"/>

   <xs:enumeration value="strut"/>

   <xs:enumeration value="stud"/>

   <xs:enumeration value="stiffening_rib"/>

   <xs:enumeration value="arch_segment"/>

   <xs:enumeration value="suspension_cable"/>

   <xs:enumeration value="suspender"/>

   <xs:enumeration value="stay_cable"/>

   <xs:enumeration value="structuralcable"/>

   <xs:enumeration value="tiebar"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcMemberTypeEnum = ENUMERATION OF (

 BRACE, 
 CHORD, 
 COLLAR, 
 MEMBER, 
 MULLION, 
 PLATE, 
 POST, 
 PURLIN, 
 RAFTER, 
 STRINGER, 
 STRUT, 
 STUD, 
 STIFFENING_RIB, 
 ARCH_SEGMENT, 
 SUSPENSION_CABLE, 
 SUSPENDER, 
 STAY_CABLE, 
 STRUCTURALCABLE, 
 TIEBAR, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

Item	SPF	XML	Change	Description
IFC4x2 Candidate 4.2.0.0
IfcMemberTypeEnum
STIFFENING_RIB			ADDED
ARCH_SEGMENT			ADDED
SUSPENSION_CABLE			ADDED
SUSPENDER			ADDED
STAY_CABLE			ADDED
IFC4x2 to IFC4x3_RC1
IfcMemberTypeEnum
STRUCTURALCABLE			ADDED
TIEBAR			ADDED

	Member Type Enum
	Enumération des types de membre