Autodesk / Autodesk/revit-ifc

Qto_SpaceBaseQuantities: GrossPerimeter

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#552 3 comments 0 reactions 0 assignees View on GitHub
2021 2022 2023 export parameters-properties problem Revit Triage
Dominant language
C#
Stars
637
Forks
225
PR merge metrics
No merged PRs in 30d

Description

When exporting Revit BaseQuantities (Revit 2021 - IFC Exporter 21.4.0.0.) the Perimeter (default Revit parameter) get's exported to IFC in feet instead of meter/millimeter as set up in Revit itself. The unit in the IFC file is meter/millimeter but hasn't been converted from feet to meter/millimeter. See files and screen shots attached. Is it possible to fix this?

[Project1.ifc.log](https://github.com/Autodesk/revit-ifc/files/10103152/Project1.ifc.log)
![Bimvision_QtoBaseQuantities GrossPerimeter](https://user-images.githubusercontent.com/118900217/204265498-2ba3da9e-ccc5-42b9-84fe-eec9a27becc7.png)
![Revit2021_QtoBaseQuantities GrossPerimeter](https://user-images.githubusercontent.com/118900217/204265503-9b11f64a-83f9-451c-a414-d238baa58d9d.png)

Contributor guide

Open the contributing guide

Research direction

Start with the attached Project1.ifc.log and the Revit 2021 export scenario shown in the screenshots, focusing on Qto_SpaceBaseQuantities: GrossPerimeter. Reproduce the export and compare the perimeter value with Revit's configured meter/millimeter units; done means the IFC GrossPerimeter is converted from feet to the declared unit.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
data
Issue type
Bug
Difficulty
3/5
Estimated time
1-2 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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