IfcRailingTypeEnum

Semantic definitions at the type

Type definition

This enumeration defines the different types of IfcRailing or IfcRailingType that can be predefined using the enumeration values.

HISTORY New enumeration type in IFC2.0

Enumeration definition

Constant	Description
HANDRAIL	A type of railing designed to serve as an optional structural support for loads applied by human occupants (at hand height). Generally located adjacent to ramps and stairs. Generally floor or wall mounted.
GUARDRAIL	A type of railing designed to guard human or vehicle occupants from falling off a stair, ramp or landing where there is a vertical drop at the edge of such floors/landings, or to provide restraint to an errant road vehicle, installed on the central reserve of or alongside a road.
BALUSTRADE	Similar to the definitions of a guardrail except the location is at the edge of a floor, rather then a stair or ramp. Examples are balustrates at roof-tops or balconies, or along a bridge or on top of a retaining wall.
FENCE	NOTE Definition from ISO6707-1: non-load bearing vertical construction, usually lightweight, which bounds or subdivides an external area.
USERDEFINED	User-defined railing element, a term to identify the user type is given by the attribute IfcRailing.ObjectType.
NOTDEFINED	Undefined railing element, no type information available.

Formal representations

XML Specification

 <xs:simpleType name="IfcRailingTypeEnum">

  <xs:restriction base="xs:string">

   <xs:enumeration value="handrail"/>

   <xs:enumeration value="guardrail"/>

   <xs:enumeration value="balustrade"/>

   <xs:enumeration value="fence"/>

   <xs:enumeration value="userdefined"/>

   <xs:enumeration value="notdefined"/>

  </xs:restriction>

 </xs:simpleType>

EXPRESS Specification


TYPE IfcRailingTypeEnum = ENUMERATION OF (

 HANDRAIL, 
 GUARDRAIL, 
 BALUSTRADE, 
 FENCE, 
 USERDEFINED, 
 NOTDEFINED);
END_TYPE;


 EXPRESS-G diagram

Item	SPF	XML	Change	Description
IFC4x2 to IFC4x3_RC1
IfcRailingTypeEnum
FENCE			ADDED

	Railing Type Enum
	Enumération des types de garde corps