IFC 4.3.x development Pset_ChimneyCommon Semantic definitions at the entity

Properties common to the definition of all occurrence and type objects of chimneys.

Name Type Description
FireRating IfcPropertySingleValueFire rating for this object. It is given according to the national fire safety code or regulation.
IsExternal IfcPropertySingleValueIndication whether the element is designed for use in the exterior (TRUE) or not (FALSE). If (TRUE) it is an external element and faces the outside of the building.
LoadBearing IfcPropertySingleValueIndicates whether the object is intended to carry loads (TRUE) or not (FALSE).
NumberOfDrafts IfcPropertySingleValueNumber of the chimney drafts, continuous holes in the chimney through which the air passes, within the single chimney.
Reference IfcPropertySingleValueReference ID for this specified type in this project (e.g. type 'A-1'), Also referred to as "construction type". It should be provided as an alternative to the name of the "object type", if the software does not support object types.
Status IfcPropertySingleValueStatus of the element, predominately used in renovation or retrofitting projects. The status can be assigned to as "New" - element designed as new addition, "Existing" - element exists and remains, "Demolish" - element existed but is to be demolished, "Temporary" - element will exists only temporary (like a temporary support structure).
ThermalTransmittanceIfcPropertySingleValueNote: new property in IFC4