IFC (IFC4X3_ADD1) development Qto_StairFlightBaseQuantities Semantic definition

Base quantities that are common to the definition of all occurrences of stair flights. Applicable entities Properties

Name Data Type Description
Length IfcQuantityLength

The length of the object.

Measured along the walking line.

GrossVolume IfcQuantityVolume

Total gross volume of the object. Openings, recesses, enclosed objects and projections are not taken into account.

NetVolume IfcQuantityVolume

Total net volume of the object, taking into account possible processing features (cut-out's, etc.) or openings and recesses.

Total net volume of the stair flight. Openings and recesses are taken into account by subtraction, projections by addition.


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