IFC 4.3.2.20240809 (IFC4X3_ADD2) under development

6.1.2.12 IfcMemberTypeEnum

6.1.2.12.1 Semantic definition

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

6.1.2.12.2 Type values

Type Description
ARCH_SEGMENT

Individual segment of an arch structure.

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.

STAY_CABLE

A sloped element suspending a structure (such as bridge deck) from a pylon.

STIFFENING_RIB

A linear element added to a flange or a web plate of a girder for local stiffening.

STRINGER

A linear element used to support stair or ramp flights, usually used with slope.

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.

STRUT

A linear element often used within a girder or truss.

STUD

Vertical element in wall framing.

SUSPENDER

A vertical element suspending a structure (such as bridge deck) from a suspension cable or an arch.

SUSPENSION_CABLE

A suspended element, typically comprising steel wire, sheath, etc.

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.

Table 6.1.2.12.A

6.1.2.12.3 Formal representation

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

6.1.2.12.4 References

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6.1.2.12.5 Changelog

6.1.2.12.5.1 IFC4.2

  • item, ARCH_SEGMENT
  • item, STAY_CABLE
  • item, STIFFENING_RIB
  • item, SUSPENDER
  • item, SUSPENSION_CABLE

6.1.2.12.5.2 IFC4.3_DEV_20bdb3d

  • item, STRUCTURALCABLE
  • item, TIEBAR