IFC 4.4.0.0 build 20261005 (IFC4X4_DEV_20260525) โš  buildingSMART Working Draft. All content is under development.

  • Help suggest improvements
  • Get user or developer support

7.5.5.14 Qto_DuctSegmentBaseQuantities

7.5.5.14.1 Semantic definition

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

7.5.5.14.2 Applicable entities

7.5.5.14.3 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.

Table A

Edit on Github

2 contributor(s): ArturTomczakbSI-Bot
Last change: Improve definition split (#876) * bring back headers headers were previously removed by mistake, now bringing them back * add new lines and rename the tag add the word 'short' in it * unify newlines make exactly one newline before and two after the tag * resolving typos Because bringing back headers required to go back in time to previous version, I'm now re-resolving the issues: #861, #860, #856 by ArturTomczak on 2024-07-16T16:07:28+02:00

Is this page difficult to understand? Let us know!

7.5.5.14.4 Changelog

7.5.5.14.4.1 IFC4

  • New resource

7.5.5.14.4.2 IFC4.3_ADD2