IFC (IFC4X3_ADD2) under development Qto_DuctSegmentBaseQuantities Semantic definition

Base quantities that are common to the definition of all types and occurrences of duct segments. Applicable entities Properties

Name Data Type Description
Length IfcQuantityLength

The length of the object.

Calculated at midpoint of cross-section, equal to the distance between inlet and outlet ports.

GrossCrossSectionArea IfcQuantityArea

Area of the cross section.

Including the duct itself and the interior flow space.

NetCrossSectionArea IfcQuantityArea

Area of the cross section of the object.

Excluding the interior flow space.

OuterSurfaceArea IfcQuantityArea

Total area of the surfaces of the object (not taking into account the end cap areas), normally generated as perimeter * length in case of extrusions.

GrossWeight IfcQuantityWeight

Total Gross Weight of the object without any add-on parts and not taking into account possible processing features (cut-out's, etc.) or openings and recesses.


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