IFC-Bench V2.0.0: 21 projects, 1027 QA pairs, 37 BIM models

.gitattributes

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+*.ifc filter=lfs diff=lfs merge=lfs -text
+*.pdf filter=lfs diff=lfs merge=lfs -text
+*.png filter=lfs diff=lfs merge=lfs -text
+*.xlsx filter=lfs diff=lfs merge=lfs -text

README.md

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+---
+license: cc-by-4.0
+task_categories:
+  - question-answering
+language:
+  - en
+tags:
+  - bim
+  - ifc
+  - building-information-modeling
+  - benchmark
+  - construction
+size_categories:
+  - 1K<n<10K
+---
+
+# IFC-Bench
+
+![Dataset Version](https://img.shields.io/badge/version-v2.0-blue)
+![License](https://img.shields.io/badge/license-CC%20BY%204.0-green)
+![QA Pairs](https://img.shields.io/badge/QA%20pairs-1027-orange)
+
+A benchmark dataset for evaluating BIM (Building Information Modeling) comprehension and reasoning capabilities in AI systems. Provides curated IFC models with question-answer pairs across 4 complexity categories for testing BIM-related AI implementations.
+
+**Dataset snapshot:**
+
+| | question | ground_truth | ifc_model | project | category |
+|---|----------|--------------|-----------|---------|----------|
+| 0 | What modelling program and IFC standard were used to create this model? | The model was created using... | arc | 4351 | 1 |
+| 1 | What are the estimated capacities for each waiting area in the building? | The information is not directly available... | arc | dental_clinic | 4 |
+| 2 | What are the slab types in the building, their quantities, and available thicknesses? | The building contains the following slab types... | arc | fantasy_residential_building_1 | 2 |
+| 3 | What are all the residential units on level 8, with their approximate gross areas? | Level 8 residential units... | arc | sixty5 | 3 |
+
+## Table of Contents
+
+- [Features](#features)
+- [Dataset Structure](#dataset-structure)
+- [Models Overview](#models-overview)
+- [Question Taxonomy](#question-taxonomy)
+- [Getting Started](#getting-started)
+- [Dataset Integrity](#dataset-integrity)
+- [Contributing](#contributing)
+- [License](#license)
+- [Citation](#citation)
+- [Acknowledgments](#acknowledgments)
+
+## Features
+
+- **21 BIM projects** with 37 IFC models across architectural, structural, MEP, and specialty disciplines
+- **1,027 question-answer pairs** covering diverse BIM information retrieval tasks
+- **4 question categories** based on data retrieval complexity (direct retrieval, computational aggregation, geometric/spatial computation, incomplete information)
+- **Rich contextual data**: original IFC files, model cards, license documentation
+- **Machine-readable format**: CSV dataset with clear column structure
+- **Versioned**: V2 dataset with V1 preserved for backwards compatibility
+
+## Dataset Structure
+
+```
+ifc-bench/
+├── projects/
+│   ├── 4351/
+│   ├── ac20/
+│   ├── city_house_munich/
+│   ├── dental_clinic/
+│   ├── digital_hub/
+│   ├── duplex/
+│   ├── ettenheim_gis/
+│   ├── fantasy_hotel_1/
+│   ├── fantasy_hotel_2/
+│   ├── fantasy_office_building_1/
+│   ├── fantasy_office_building_2/
+│   ├── fantasy_office_building_3/
+│   ├── fantasy_residential_building_1/
+│   ├── fzk_house/
+│   ├── hitos/
+│   ├── molio/
+│   ├── samuel_macalister_sample_house/
+│   ├── schependomlaan/
+│   ├── sixty5/
+│   ├── smiley_west/
+│   └── wbdg_office/
+│       ├── arc.ifc            # IFC model files
+│       ├── model_card.md      # Project metadata
+│       ├── license.txt        # Model license
+│       └── snapshot.png       # Visual snapshot
+├── questions/
+│   ├── ifc-bench-v2.csv       # V2 dataset (1,027 QA pairs)
+│   └── ifc-bench-v1.csv       # V1 dataset (preserved)
+└── docs/
+    └── CONTRIBUTING.md
+```
+
+## Models Overview
+
+| Project | Disciplines | License | Usage | Source |
+|---------|-------------|---------|-------|--------|
+| `4351` | Architecture | GNU GPL v3 | unspecified | [BIMserver TestFiles](https://github.com/opensourceBIM/TestFiles) |
+| `ac20` | Architecture | unrestricted | office | [KIT IFC Examples](https://www.ifcwiki.org/index.php?title=KIT_IFC_Examples) |
+| `city_house_munich` | Architecture | CC BY 4.0 | living | N/A |
+| `dental_clinic` | Architecture, Structural, MEP | CC BY 4.0 | healthcare | [buildingSMART](https://github.com/buildingsmart-community/Community-Sample-Test-Files) |
+| `digital_hub` | Architecture, Heating, Plumbing, Ventilation | MIT | office | [RWTH E3D](https://github.com/RWTH-E3D/DigitalHub) |
+| `duplex` | Architecture, MEP | CC BY 4.0 | living | [buildingSMART](https://github.com/buildingsmart-community/Community-Sample-Test-Files) |
+| `ettenheim_gis` | GIS | GNU GPL v3 | mix | [BIMserver TestFiles](https://github.com/opensourceBIM/TestFiles) |
+| `fantasy_hotel_1` | Architecture | MIT | hospitality | TUM BIM Fundamentals SS2025 |
+| `fantasy_hotel_2` | Architecture | MIT | hospitality | TUM BIM Fundamentals SS2025 |
+| `fantasy_office_building_1` | Architecture | MIT | office | TUM BIM Fundamentals SS2025 |
+| `fantasy_office_building_2` | Architecture | MIT | office | TUM BIM Fundamentals SS2025 |
+| `fantasy_office_building_3` | Architecture | MIT | office | TUM BIM Fundamentals SS2025 |
+| `fantasy_residential_building_1` | Architecture | MIT | living | TUM BIM Fundamentals SS2025 |
+| `fzk_house` | Architecture | unrestricted | living | [KIT IFC Examples](https://www.ifcwiki.org/index.php?title=KIT_IFC_Examples) |
+| `hitos` | Architecture | GNU GPL v3 | office | [BIMserver TestFiles](https://github.com/opensourceBIM/TestFiles) |
+| `molio` | Architecture | CC BY 4.0 | office | [buildingSMART](https://github.com/buildingsmart-community/Community-Sample-Test-Files) |
+| `samuel_macalister_sample_house` | Architecture, MEP | GNU GPL v3 | living | [BIMserver TestFiles](https://github.com/opensourceBIM/TestFiles) |
+| `schependomlaan` | Architecture | CC BY 4.0 | living | [openBIM Archive](https://github.com/openBIMstandards/Archive-DataSetSchependomlaan) |
+| `sixty5` | Architecture, Electrical, Facade, Kitchen, Plumbing, Structural, Ventilation | CC BY 4.0 | living | [buildingSMART](https://github.com/buildingsmart-community/Community-Sample-Test-Files) |
+| `smiley_west` | Architecture | unrestricted | living | [KIT IFC Examples](https://www.ifcwiki.org/index.php?title=KIT_IFC_Examples) |
+| `wbdg_office` | Architecture, MEP, Structural | CC BY 4.0 | office | [WBDG](https://www.wbdg.org/bim/cobie/common-bim-files) |
+
+<table>
+  <tr>
+    <td align="center"><img src="projects/4351/snapshot.png" width="250"/><br><b>4351</b></td>
+    <td align="center"><img src="projects/ac20/snapshot.png" width="250"/><br><b>ac20</b></td>
+    <td align="center"><img src="projects/city_house_munich/snapshot.png" width="250"/><br><b>city_house_munich</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/dental_clinic/snapshot.png" width="250"/><br><b>dental_clinic</b></td>
+    <td align="center"><img src="projects/digital_hub/snapshot.png" width="250"/><br><b>digital_hub</b></td>
+    <td align="center"><img src="projects/duplex/snapshot.png" width="250"/><br><b>duplex</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/ettenheim_gis/snapshot.png" width="250"/><br><b>ettenheim_gis</b></td>
+    <td align="center"><img src="projects/fantasy_hotel_1/snapshot.png" width="250"/><br><b>fantasy_hotel_1</b></td>
+    <td align="center"><img src="projects/fantasy_hotel_2/snapshot.png" width="250"/><br><b>fantasy_hotel_2</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/fantasy_office_building_1/snapshot.png" width="250"/><br><b>fantasy_office_building_1</b></td>
+    <td align="center"><img src="projects/fantasy_office_building_2/snapshot.png" width="250"/><br><b>fantasy_office_building_2</b></td>
+    <td align="center"><img src="projects/fantasy_office_building_3/snapshot.png" width="250"/><br><b>fantasy_office_building_3</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/fantasy_residential_building_1/snapshot.png" width="250"/><br><b>fantasy_residential_building_1</b></td>
+    <td align="center"><img src="projects/fzk_house/snapshot.png" width="250"/><br><b>fzk_house</b></td>
+    <td align="center"><img src="projects/hitos/snapshot.png" width="250"/><br><b>hitos</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/molio/snapshot.png" width="250"/><br><b>molio</b></td>
+    <td align="center"><img src="projects/samuel_macalister_sample_house/snapshot.png" width="250"/><br><b>samuel_macalister_sample_house</b></td>
+    <td align="center"><img src="projects/schependomlaan/snapshot.png" width="250"/><br><b>schependomlaan</b></td>
+  </tr>
+  <tr>
+    <td align="center"><img src="projects/sixty5/snapshot.png" width="250"/><br><b>sixty5</b></td>
+    <td align="center"><img src="projects/smiley_west/snapshot.png" width="250"/><br><b>smiley_west</b></td>
+    <td align="center"><img src="projects/wbdg_office/snapshot.png" width="250"/><br><b>wbdg_office</b></td>
+  </tr>
+</table>
+
+## Question Taxonomy
+
+Questions are classified into 4 categories based on data retrieval complexity and computational requirements, adapted from the classification framework by [Solihin et al. (2015)](https://doi.org/10.1016/j.autcon.2015.03.004) for automated BIM compliance checking.
+
+| Category | Name | Count | Description |
+|----------|------|-------|-------------|
+| 1 | Direct Information Retrieval | 152 | Answerable through direct access to explicitly stored BIM element properties, without requiring computation. |
+| 2 | Computational Aggregation | 569 | Require simple, unambiguous mathematical operations (counting, summation, averaging, filtering) on directly accessible data. |
+| 3 | Geometric/Spatial Computation | 112 | Require complex computations involving geometric properties, spatial relationships, or derived measurements not directly stored. |
+| 4 | Incomplete Information | 194 | The required information is not fully available in the BIM model; answering requires assumptions or acknowledging limitations. |
+
+For details on how the taxonomy is used in evaluation, see:
+
+> Hellin, S., Nousias, S., & Borrmann, A. (2026). *Evaluating AI Systems for BIM Information Retrieval: A Multi-Dimensional Framework Beyond Binary Accuracy.* GNI 2026.
+
+## Getting Started
+
+### Prerequisites
+- Python 3.8+
+- [uv](https://github.com/astral-sh/uv) (recommended for virtual environment management)
+
+### Quick Start
+
+```bash
+git clone https://github.com/sylvainHellin/ifc-bench.git
+cd ifc-bench
+
+# Install dependencies (using uv)
+uv pip install pandas ifcopenshell
+```
+
+### Using the Dataset
+
+```python
+import pandas as pd
+
+# Load V2 dataset
+df = pd.read_csv('questions/ifc-bench-v2.csv')
+
+print(f"Total QA pairs: {len(df)}")
+print(f"Projects: {df['project'].nunique()}")
+print(f"Category distribution:\n{df['category'].value_counts().sort_index()}")
+
+# Filter by category
+spatial_questions = df[df['category'] == 3]
+print(f"\nGeometric/Spatial questions: {len(spatial_questions)}")
+
+# Filter by project
+duplex_questions = df[df['project'] == 'duplex']
+print(f"Duplex questions: {len(duplex_questions)}")
+```
+
+### Dataset Columns
+
+| Column | Description | Example |
+|--------|-------------|---------|
+| `question` | Natural language question about a BIM model | "What is the total gross floor area of the building?" |
+| `ground_truth` | Reference answer | "The total gross floor area is 354.67 sqm" |
+| `ifc_model` | Model filename (without `.ifc` extension) | "arc" |
+| `project` | Project name (matches directory under `projects/`) | "duplex" |
+| `category` | Question complexity category (1-4) | 2 |
+
+## Dataset Integrity
+
+Verify dataset integrity using SHA-256 checksums:
+
+```bash
+# V2 dataset
+shasum -a 256 questions/ifc-bench-v2.csv
+# Expected: 8f08f5d04834a79310eb7de81f2d6812e74d53a01363affdb815bf86dfc4dbf4
+
+# V1 dataset (preserved for backwards compatibility)
+shasum -a 256 questions/ifc-bench-v1.csv
+# Expected: f67a48770d74b6e0ff0868c923c3e1d976110350b2c439564d7ceccc16a46f35
+```
+
+## Contributing
+
+We welcome contributions:
+- New IFC models (with permissive licensing)
+- Additional QA pairs for existing models
+- Documentation improvements
+- Error corrections in existing answers
+
+Please see our [Contribution Guidelines](docs/CONTRIBUTING.md) for details.
+
+## License
+
+- **Dataset**: Licensed under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/)
+- **Models**: Inherit their original licenses (see individual project folders)
+
+## Citation
+
+If using in research, please cite:
+
+```bibtex
+@inproceedings{hellinNaturalLanguageInformation2025,
+  title = {Natural {{Language Information Retrieval}} from {{BIM Models}}: {{An LLM-Based Agentic Workflow Approach}}},
+  booktitle = {{{EC3}}},
+  author = {Hellin, Sylvain and Nousias, Stavros and Borrmann, Andr{\'e}},
+  year = 2025,
+  doi = {http://www.doi.org/10.35490/EC3.2025.265},
+  abstract = {While Building Information Models (BIM) effectively store building-related information, accessing it requires specialized software and expertise. Natural Language (NL) interfaces for BIM data retrieval can mitigate this challenge, but existing approaches are limited by rigid ontological frameworks or extensive pre-processing requirements. We present a Large Language Model-based agentic workflow that processes NL queries and automatically interacts with IFC-encoded BIM models without ontological or pre-processing constraints. In tests across architectural, structural, and MEP domains, our approach achieves 80\% overall accuracy. We provide open access to IFC-Bench-v1, our evaluation dataset containing various queries, answers, and reference BIM models.},
+  copyright = {CC0 1.0 Universal Public Domain Dedication},
+  langid = {english}
+}
+```
+
+## Acknowledgments
+
+- [buildingSMART International](https://www.buildingsmart.org/) for providing sample files
+- [RWTH Aachen University E3D Institute](https://github.com/RWTH-E3D) for the Digital Hub models
+- [KIT IAI](https://www.ifcwiki.org/) for IFC example models
+- Tamira Wrabel and Zijian Wang for preparing and curating the BIM Fundamentals SS2025 student models
+- TUM BIM Fundamentals SS2025 students for fantasy building models
+- [Selahattin Doelger](https://github.com/buildingsmart-community/Community-Sample-Test-Files) for the Sixty5 models
+- The openBIM community for quality assurance
+
+---
+
+**Maintainer**: Sylvain Hellin | **Contact**: [sylvain.hellin@tum.de](mailto:sylvain.hellin@tum.de) | **Issues**: [GitHub Issues](https://github.com/sylvainHellin/ifc-bench/issues)

docs/CONTRIBUTING.md

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+# Contributing to ifc-bench
+
+We welcome contributions to the `ifc-bench` dataset! This document outlines the guidelines for contributing new models, QA pairs, documentation, or code improvements.
+
+## How to Contribute
+
+### 1. Reporting Issues
+
+If you find a bug, an error in the dataset, or have a suggestion, please open an issue on our [GitHub issue tracker](https://github.com/sylvainHellin/ifc-bench/issues).
+
+### 2. Contributing New IFC Models
+
+We are always looking for new IFC models to expand the dataset. When contributing a new model, please ensure: 
+
+-   **Licensing**: The model must be available under a permissive open-source license (e.g., CC BY 4.0, MIT).
+-   **Format**: The model must be in the IFC format.
+-   **Documentation**: Provide a brief description of the model, including its purpose, size, and complexity.
+-   **Organization**: Place the model files in a new folder under the `projects/` directory. Include a `license.txt` file and a `model_card.md` (Markdown format) with the model's metadata.
+-   **QA Pairs** (Optional): Include question-answer pairs for the new model.
+
+### 3. Contributing New QA Pairs
+
+If you want to add more question-answer pairs to existing models:
+
+-   **Format**: Add new rows to the `questions/ifc-bench-v2.csv` file.
+-   **Category**: Each question must include a `category` value (1-4): 1=Direct Information Retrieval, 2=Computational Aggregation, 3=Geometric/Spatial Computation, 4=Incomplete Information.
+-   **Accuracy**: Ensure the answers are accurate and verifiable.
+-   **Clarity**: Questions should be clear and unambiguous.
+-   **Diversity**: Try to cover different aspects of the model (spatial, properties, systems, etc.).
+-   **Consistency**: Follow the existing format for columns: `question`, `ground_truth`, `ifc_model`, `project`, `category`.
+
+### 4. Correcting Existing Answers
+If you find inaccuracies in existing QA pairs:
+- **Verification**: Provide evidence for the correction (screenshots, model measurements)
+- **Format**: Modify the answer cell in `questions/ifc-bench-v2.csv` while keeping the original question
+- **Traceability**: Include a brief explanation in the pull request description
+
+### 5. Contributing Documentation
+
+If you want to improve the documentation:
+
+-   **Clarity**: Ensure the documentation is clear, concise, and easy to understand.
+-   **Accuracy**: Ensure the documentation is accurate and up-to-date.
+-   **Format**: Follow the Markdown format.
+-   **Organization**: Place new documentation files in the `docs/` directory.
+
+
+## Contribution Workflow
+
+1.  **Fork the repository** on GitHub.
+2.  **Create a new branch** for your changes.
+3.  **Make your changes** and commit them with clear messages.
+4.  **Push your branch** to your forked repository.
+5.  **Submit a pull request** to the main repository.
+
+
+## Questions
+
+If you have any questions, please open an issue on our [GitHub issue tracker](https://github.com/sylvainHellin/ifc-bench/issues).
+
+**Before starting major work:**
+- Check open issues for existing discussions
+- For large contributions, consider opening an issue first to discuss the approach
+
+Thank you for your contributions!

projects/4351/arc.ifc

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+oid sha256:96077863a6734f574fadc33c77199a9b82222fc4b3f4c0da6612eef9347c99a9
+size 7288853

projects/4351/license.txt

@@ -0,0 +1,14 @@
+Copyright (C) 2009-2017  BIMserver.org
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.

projects/4351/model_card.md

@@ -0,0 +1,20 @@
+---
+project: 4351
+models:
+  - file: arc.ifc
+    discipline: Architecture
+license: GNU GPL v3
+usage: unspecified
+author: "2009-2017 BIMserver.org"
+source: "https://github.com/opensourceBIM/TestFiles/tree/master"
+---
+
+# 4351
+
+## Description
+Architectural model of an unidentified building.
+
+## Models
+| File | Discipline | Description |
+|------|-----------|-------------|
+| `arc.ifc` | Architecture | The architectural model of an unidentified building |

projects/ac20/arc.ifc

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+version https://git-lfs.github.com/spec/v1
+oid sha256:cfb2124497b25d9a72101075e84be0feb44ff669cb1bd3251be11efebeea945c
+size 10934237

projects/ac20/license.txt

@@ -0,0 +1,4 @@
+(C) Institute for Automation and Applied Informatics (IAI) / Karlsruhe Institute of Technology (KIT), https://www.ifcwiki.org/index.php?title=KIT_IFC_Examples
+
+This work is licensed under the Creative Commons Attribution 4.0 International License. 
+More info and a link to the full license text is available on http://creativecommons.org/licenses/by/4.0/

projects/ac20/model_card.md

@@ -0,0 +1,20 @@
+---
+project: ac20
+models:
+  - file: arc.ifc
+    discipline: Architecture
+license: unrestricted use
+usage: office
+author: Institute for Automation and Applied Informatics (IAI) / Karlsruhe Institute of Technology (KIT)
+source: "https://www.ifcwiki.org/index.php?title=KIT_IFC_Examples"
+---
+
+# ac20
+
+## Description
+A fantasy office building.
+
+## Models
+| File | Discipline | Description |
+|------|-----------|-------------|
+| `arc.ifc` | Architecture | The architectural model of a fantasy office building |

projects/city_house_munich/arc.ifc

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+version https://git-lfs.github.com/spec/v1
+oid sha256:d03e5268dc55b2494b12f278c7dab978fb689b7095a970771eda4e5f88ce3dd3
+size 33499586

projects/city_house_munich/license.txt

@@ -0,0 +1,13 @@
+Creative Commons Attribution 4.0 International (CC BY 4.0)
+
+Copyright (c) 2025 Sylvain Hellin
+
+You are free to:
+- Share: copy and redistribute the material in any medium or format
+- Adapt: remix, transform, and build upon the material for any purpose, even commercially
+
+Under the following terms:
+- Attribution: You must give appropriate credit, provide a link to the license,
+  and indicate if changes were made.
+
+Full license text: https://creativecommons.org/licenses/by/4.0/legalcode

projects/city_house_munich/model_card.md

@@ -0,0 +1,20 @@
+---
+project: city_house_munich
+models:
+  - file: arc.ifc
+    discipline: Architecture
+license: CC BY 4.0
+usage: living
+author: Sylvain Hellin
+source: N/A
+---
+
+# city_house_munich
+
+## Description
+Architectural model of a residential house in Munich.
+
+## Models
+| File | Discipline | Description |
+|------|-----------|-------------|
+| `arc.ifc` | Architecture | The architectural model of a residential house in Munich |

projects/dental_clinic/arc.ifc

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+oid sha256:b90fe57b8aa9329d762a564770e697d4f7357677484e3a78ede4ab6d2163c0c0
+size 13208096

projects/dental_clinic/license.txt

@@ -0,0 +1,4 @@
+(C) "BSI (2020) "Medical-Dental Test Files," buildingSMART International", https://github.com/buildingsmart-community/Community-Sample-Test-Files/tree/main/IFC%202.3.0.1%20(IFC%202x3)/Medical-Dental%20Clinic
+
+This work is licensed under the Creative Commons Attribution 4.0 International License. 
+More info and a link to the full license text is available on http://creativecommons.org/licenses/by/4.0/

projects/dental_clinic/mep.ifc

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+version https://git-lfs.github.com/spec/v1
+oid sha256:72bdbfeb104d044bcd1ae644f9a5c6e72fd7750c2fd15fe98de2c53a04850e8d
+size 125780663

projects/dental_clinic/model_card.md

@@ -0,0 +1,26 @@
+---
+project: dental_clinic
+models:
+  - file: arc.ifc
+    discipline: Architecture
+  - file: mep.ifc
+    discipline: MEP
+  - file: str.ifc
+    discipline: Structural
+license: CC BY 4.0
+usage: healthcare
+author: "BSI (2020) Medical-Dental Test Files"
+source: "https://github.com/buildingsmart-community/Community-Sample-Test-Files/tree/main/IFC%202.3.0.1%20(IFC%202x3)/Medical-Dental%20Clinic"
+---
+
+# dental_clinic
+
+## Description
+A two-story clinic with medical, dental, pediatric, and imaging suites. This is a real building whose information has been redacted.
+
+## Models
+| File | Discipline | Description |
+|------|-----------|-------------|
+| `arc.ifc` | Architecture | The architectural model of a dental clinic building |
+| `mep.ifc` | MEP | The MEP model of a dental clinic building |
+| `str.ifc` | Structural | The structural model of a dental clinic building. It also contains some non-structural elements like the roof. |

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projects/digital_hub/license.txt

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+MIT License
+
+Copyright (c) 2020 RWTH Aachen University - E3D Institute of Energy Efficiency and Sustainable Building
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.

projects/digital_hub/model_card.md

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+---
+project: digital_hub
+models:
+  - file: arc.ifc
+    discipline: Architecture
+  - file: heating.ifc
+    discipline: "MEP-Heating"
+  - file: plumbing.ifc
+    discipline: "MEP-Plumbing"
+  - file: ventilation.ifc
+    discipline: "MEP-Ventilation"
+license: MIT
+usage: office
+author: "2020 RWTH Aachen University - E3D Institute of Energy Efficiency and Sustainable Building"
+source: "https://github.com/RWTH-E3D/DigitalHub/tree/master"
+---
+
+# digital_hub
+
+## Description
+An office building from RWTH Aachen University.
+
+## Models
+| File | Discipline | Description |
+|------|-----------|-------------|
+| `arc.ifc` | Architecture | The architectural model of an office building from RWTH (Germany) |
+| `heating.ifc` | MEP-Heating | The MEP-heating model of an office building from RWTH (Germany) |
+| `plumbing.ifc` | MEP-Plumbing | The MEP-plumbing model of an office building from RWTH (Germany) |
+| `ventilation.ifc` | MEP-Ventilation | The MEP-ventilation model of an office building from RWTH (Germany) |

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