ifc-lite (LTplus-AG)MCADConfidence: Medium

IfcSurfaceCurveSweptAreaSolid ignores ReferenceSurface, so non-circular sections from a Revit 2025 export come out rolled 90 degrees. Slab edges swap width and height, and a sconce shrinks to a quarter of its area.

Impact Analysis

Persona

Mechanical Designer

Team Size Impact

5x Multiplier

Prototype Delay

3 Days

Est. Annual Cost

$30,000

1 user · 1 month240 min
Rest of team960 min
Rest of year13,200 min

monthly_minutes × 12 × team_multiplier ÷ 60 × $75/hr = $30k/yr

$75/hr assumed rate.

Annual team-minutes decomposed from the reported monthly inputs.

Evidence & Sources

1 Sources

LTplus-AG/ifc-lite Issue #8437: IfcSurfaceCurveSweptAreaSolid ignores ReferenceSurface: non-circular sections are rolled 90° (Revit slab edges, light fixtures)

github.com

→

Analyst Notes

From the Grok pain-radar digests, Oct 31-Nov 1 2026 (Oct 31 9:41 PM ET through Nov 1 7:41 AM ET digests plus the Haitch overnight edition). Verified live 2026-11-01: issue/PR read; title and state confirmed.