Autodesk / Autodesk/revit-ifc

PR: IfcBuilding attributes export from RVT 2025

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#819 10 comments 1 reaction 0 assignees View on GitHub
problem
Dominant language
C#
Stars
637
Forks
225
PR merge metrics
No merged PRs in 30d

Description

### Problem Description

I have discovered that export from RVT 2025 does not include these mapped attributes of **IfcBuilding**:

- Long name
- Description
- Object Type

Using shared parameters, does not work at all at RVT 2025 using latest release of Plugin (25.2.0.5)
- BuildingLongName
- BuildingDescription
- BuildingObjectType

In RVT2024 it works prefectly well!

In RVT2025 there is one extra parameter in Export Setup that is not in 2024. Is that possible that this is the case of incorrect export?
![image](https://github.com/user-attachments/assets/94899535-ae53-43ca-8983-ca443b04d235)

Attached RVT24 + RVT25 files + IFCs of both in 2x3 and 4x3:
[RVT-IfcBuilding-Bug.zip](https://github.com/user-attachments/files/17675076/RVT-IfcBuilding-Bug.zip)

### Revit Version

2024.0.x

### IFC for Revit Addon Version

24.x.x

### Windows Version

11 22H2

Contributor guide

Open the contributing guide

Research direction

Start with the attached RVT-IfcBuilding-Bug.zip and compare the RVT 2024 and RVT 2025 IFC exports, focusing on IfcBuilding Long name, Description, and Object Type. Inspect the RVT 2025 Export Setup and the shared parameters BuildingLongName, BuildingDescription, and BuildingObjectType; done means these attributes export correctly in the affected RVT 2025 cases as they do in RVT 2024.

Written by the indexing model from the issue text.

Assessment

Tech stack
csharp
Domain
desktop, tooling
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Active
Clarity
Mostly clear
Newbie friendliness
55/100

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