IFC 4.3.1.0 (IFC4X3_ADD1) development

6.1.5.6 Qto_CurtainWallQuantities

6.1.5.6.1 Semantic definition

Base quantities that are common to the definition of all occurrences of curtain walls.

6.1.5.6.2 Applicable entities

6.1.5.6.3 Properties

Name Data Type Description
Length IfcQuantityLength

The length of the object.

Along center line (even if different to the wall path).

Height IfcQuantityLength

Characteristic height

Total height of the curtain wall. It should only be provided, if it is constant along the curtain wall path.

Width IfcQuantityLength

The width of the object. Only given, if the object has constant thickness (prismatic).

Only be provided, if it is constant along the curtain wall path.

GrossSideArea IfcQuantityArea

Area of the wall as viewed by an elevation view of the middle plane of the wall. It does not take into account any wall modifications (such as openings).

NetSideArea IfcQuantityArea

Area of the object as viewed by an elevation view of the middle plane of the object. It does take into account all object modifications (such as openings).

Table 6.1.5.6.A

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6.1.5.6.4 Changelog

6.1.5.6.4.1 IFC4

  • New resource

6.1.5.6.4.2 IFC4.3_DEV_9f90c1f0