PR: NumberOfStoreys exports all Levels instead of just the Building Storeys
Open
problem
- Dominant language
- C#
- Stars
- 637
- Forks
- 225
- PR merge metrics
- No merged PRs in 30d
Description
### Problem Description
In R26 the NumberOfStoreys are not exported correctly.
Revit should ouly export levels marked as Building Storey to NumberOfStoreys
Instead it exports all levels.
In Revit 24 it worked just fine.
(I don't know about 25, I never used it)
### Revit Version
2026.4.x
### IFC for Revit Addon Version
26.4.1
### Windows Version
11 25H2
Contributor guide
Research direction
Start by reproducing the export with Revit 2026.4.x and IFC for Revit 26.4.1, using levels both marked and not marked as Building Storey. Compare the resulting NumberOfStoreys with Revit 24 behavior. Done means the export includes only levels marked as Building Storey.
Written by the indexing model from the issue text.
Assessment
- Tech stack
- csharp
- Domain
- backend
- Issue type
- Bug
- Difficulty
- 4/5
- Estimated time
- 3-5 days
- Activity status
- Quiet
- Clarity
- Mostly clear
- Newbie friendliness
- 45/100