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Formeo residential buildings (IFC4)
4 verifiable residential environments as IFC4. World = a unique building per seed; tasks = count, locate, edit, check; grader = 10 deterministic architectural gates. This teaser shows the files and the verdict format under Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0). Contact info@formeo.ai.
Summary
| Role | What it is |
|---|---|
| World | Multi-storey residential building (architecture + generic concrete frame), deterministic from seed |
| Tasks | Count, locate, edit, check against the building and its feature list |
| Grader | 10 deterministic architectural gates; ok only when every gate passes |
One sample is one building: an .ifc (IFC4, metres) and a _features.md list of measured counts. The generator is deterministic (seed → whole building, 50 mm grid).
- HF dataset:
Formeo/residential-ifc4 - Files in this teaser: 4 buildings, different archetypes and seeds
- Access: granted on request
- Licensed corpora: generated fresh per engagement
- Developed by: Kisfali Engineering Srls.
Open one building in the browser. This is an Autodesk Viewer share of one sample. It is a view of the model, not the dataset download.
Spatial tree: IfcProject > IfcSite > IfcBuilding > IfcBuildingStorey (Foundations, L0..Ln) > elements. Units are IfcSpace. Rooms are child spaces. Doors and windows are openings that void a wall and fill it. Stairs are IfcStair with flights and landings. Building parts are not proxies. Entourage (planting, furniture, people) is marked Formeo_Entourage.IsEntourage = True and is left out of the counts. Geometry is extruded solids.
Formeo_Generator on IfcBuilding stores the seed and the parameter vector. A sample can be regenerated from those.
Grader (architectural)
Every published building in this teaser passed the grader. Verdict shape (gate names and pass/fail — never the implementation):
| Gate | What it asserts |
|---|---|
counts |
Minimums (with margin): storeys, footprint, openings, stairs, structural members, parts |
spaces |
No overlap between units / cores / corridors / connectors / rooms; rooms cover the unit interior |
walls |
No wall–wall overlap beyond tolerance |
openings |
Every opening inside its host wall and below the wall top |
stairs |
Risers match storey height; flights meet half-landing and storey level |
connectivity |
Door graph: every room reaches hall → corridor → stair → ground |
travel |
Corridor distance from each unit door to the nearest stair ≤ limit |
daylight |
Every living/bedroom has ≥ 1 window; window/floor area reported |
realism |
Plan not mirror-symmetric; distinct unit widths; archetype asymmetries |
stacking |
Cores and columns of storey i exist on storey i−1 (nothing floats) |
Overall verdict: ok = true only when every gate returns ok = true. Feature lists ship measured counts; gate results stay with the licensed grader.
Eurocode member sizing (Pset_Formeo_StructuralVerification) is a separate structural grader layer, not yet on these residential files. The architectural grader above already exists and gates every sample.
This package
Measured on the files in this repository:
| Archetype | Seed | Storeys | Footprint m | Units | Openings | Structural members | File |
|---|---|---|---|---|---|---|---|
| L | 9 | 5 | 82 × 56 | 103 | 926 | 951 | L_9.ifc |
| U | 3 | 5 | 82 × 56 | 121 | 1153 | 1611 | U_3.ifc |
| O | 7 | 5 | 82 × 56 | 177 | 1606 | 1831 | O_7.ifc |
| H | 11 | 5 | 82 × 56 | 123 | 1082 | 1381 | H_11.ifc |
Each *_features.md lists the measured contents of that file: footprint, units, openings, structure, stairs, and the other counts in the model.
What varies
| Parameter | Range |
|---|---|
| Archetype | L, U, O, H, T |
| Site width × depth | 82–100 × 56–72 m, 2 m steps |
| Storeys | 3–8 |
| Arm length | 0.6–1.0 of the site side |
| Wing depth | 15.0–17.5 m |
| Structural module | 5.4 / 6.0 / 6.6 / 7.2 / 7.8 / 8.1 m, per wing |
| Storey heights | ground 3.6–4.0 m, typical 3.0–3.2 m |
| Unit mix | studio / 1 / 2 / 3 / 4-bed |
| Window style | conservative / tall / full |
The topology changes with the parameters: wings, cores, units, rooms, walls, and openings differ between samples.
Known limitations
Orthogonal geometry only. One room-template family. Kitchens and baths are internal. Interior corner cells under wing junctions are utility rooms, not L-shaped apartments. No MEP, no handrails, no roof build-up. The structure is a generic concrete frame (0.4 m columns, 0.3×0.5 m beams, 0.25 m slabs), not yet member-sized. The code basis for future structural checks is generic European practice, not a named national annex.
Intended use
Open one building and its feature list. These 4 files are not a training corpus. Use them to inspect the world format and the grader's gate vocabulary.
Legal
- Copyright: © 2026 Kisfali Engineering Srls. All rights reserved.
- License: Creative Commons Attribution-NonCommercial 4.0 International (CC BY-NC 4.0) (
cc-by-nc-4.0). Attribution required. Non-commercial only. Commercial use, including training, fine-tuning, or evaluating a commercial model or product, requires a written license from Kisfali Engineering Srls. - Licensed corpora are generated fresh per engagement. The generator, grader, and full corpus stay with the engagement.
- Access: granted on request.
Contact info@formeo.ai.
Citation
@dataset{formeo_residential_ifc4_2026,
author = {Kisfali Engineering Srls.},
title = {Formeo residential buildings (IFC4)},
year = 2026,
publisher = {Hugging Face},
url = {https://huggingface.co/datasets/Formeo/residential-ifc4}
}
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