Base quantities are quantity definitions that are independent of a particular method of measurement and therefore internationally applicable. Base quantities are defined as gross and net values and provided by measurement of the correct geometric shape representationthe way that the information included in a model is represented visually
of the element. Additional Quantity takeoff add-on view is included to the exported IFCfile format commonly used in BIM that facilitates software interoperability
IFC is an open specification developed by the IAI (International Alliance for Interoperability).
Model can be exported into an IFC file.
model if you set Base quantities to Yes in the Tekla Structures IFC Export dialog box.
The Quantity takeoff add-on view contains the following base quantity information on the entities in the exported IFC model: