Autodesk / Autodesk/revit-ifc

Steel beams with different start and end level and structural connections are exported wrong

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#476 16 comments 0 reactions 0 assignees View on GitHub
Dominant language
C#
Stars
637
Forks
225
PR merge metrics
No merged PRs in 30d

Description

Using 22.5 IFC exporter (unsure if it was a problem with earlier version) it seems that the steel fabrication element generated when using steel connections does not have the correct end points when exported to IFC. It seems to be completely horizontal, and the end elevation the same as the start elevation.

Beam start Revit
![image](https://user-images.githubusercontent.com/58807838/176699672-216eabd7-b306-4c92-a02c-934169ed1cf0.png)

Beam start IFC
![image](https://user-images.githubusercontent.com/58807838/176700580-23867961-b985-4a48-878d-e29da137976f.png)

Beam end Revit
![image](https://user-images.githubusercontent.com/58807838/176697940-ee55a7ad-21aa-40a5-98b8-9b82e7750ade.png)

Beam end IFC
![image](https://user-images.githubusercontent.com/58807838/176697987-e719ef5e-d6aa-4ecc-ad7c-afd0a775fbc7.png)

Contributor guide

Open the contributing guide

Research direction

Reproduce the IFC export with a Revit steel beam whose start and end levels differ and that uses structural connections, comparing the Revit and IFC endpoints. Done means the exported steel fabrication element preserves the distinct end elevation instead of becoming horizontal; no source files, tests, or entry points are named.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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