Updating the info regarding "Base Quantities with IFC export"
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2025-02-24
12:23 PM
- last edited on
2025-02-25
08:19 PM
by
Laszlo Nagy
Regarding this "already closed" thread from 2018 https://community.graphisoft.com/t5/Collaboration-with-other/Base-Quantities-with-IFC-export/m-p/257... , with a last comment by @stefan , I wanted to update the features from the IFC 4.0.2.1. schema version regarding IfcPile Base Quantities:
https://standards.buildingsmart.org/IFC/DEV/IFC4_2/FINAL/HTML/link/qto_pilebasequantities.htm
And this is how Graphisoft Archicad 28 uses IFC4 RV adding Base Quantities checkbox to publish a Pile
Operating system used: Windows 28.0.3. (3120) INT FULL
http://www.daviddelgado.cat
i7-7820HK CPU 2,90GHz 32GB RAM
Triple Monitor 17"+25"+32" Nvidia Geforce GTX 1080
SSD+HDD, Win10 Home - 64 ENG
AC18-AC28 INT/SPA (64-bit, latest build)
Surfing with Archicad since 2013

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2025-02-25 08:22 PM
So, if I understand correctly, instead of exporting 8 IFC Base Quantities, as defined by the IFC 4 schema, Archicad exports only the "NetVolume" Base Quantity for Ifc Piles?
Question: how did you model the element? Using the Column tool/a Library Part/Morph tool/other?
Can you check if there are any differences when modeling it using the various options?
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28
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2025-02-25 09:30 PM
Hi @Laszlo Nagy
The tool choice creates different outputs, regardless the correct class mapping.
Here you have the three scenarios:
http://www.daviddelgado.cat
i7-7820HK CPU 2,90GHz 32GB RAM
Triple Monitor 17"+25"+32" Nvidia Geforce GTX 1080
SSD+HDD, Win10 Home - 64 ENG
AC18-AC28 INT/SPA (64-bit, latest build)
Surfing with Archicad since 2013

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2025-02-25 09:48 PM
Thanks for the images. OK, no matter which tool is used, only the "NetVolume" is generated in the IFC file.
I will forward this to GS HQ.
AMD Ryzen9 5900X CPU, 64 GB RAM 3600 MHz, Nvidia GTX 1060 6GB, 500 GB NVMe SSD
2x28" (2560x1440), Windows 10 PRO ENG, Ac20-Ac28
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2025-02-26 03:16 PM
Thanks.
Notice that there was also one without QTO_ and it was the Object tool.
http://www.daviddelgado.cat
i7-7820HK CPU 2,90GHz 32GB RAM
Triple Monitor 17"+25"+32" Nvidia Geforce GTX 1080
SSD+HDD, Win10 Home - 64 ENG
AC18-AC28 INT/SPA (64-bit, latest build)
Surfing with Archicad since 2013