Georgios Triantafyllidis
About
Registered Architect and Ph.D. Candidate at the Norwegian University of Science and Technology (NTNU), where I also serve as a Teaching Assistant in the Master’s Program in Digital Construction Processes. My research is centered on leveraging Digital Twins for the Circular Economy within the Built Environment. I specialize in the design, modeling, and integration of diverse information systems for buildings and cities, employing semantic web technologies and BIM models to support decision-making and enhance collaboration among various stakeholders, fostering sustainable urban development. My interdisciplinary approach merges design and systems thinking with information modeling, visualization, and architectural technology.
Research Supervision and Collaboration: My doctoral research is supervised by Lizhen Huang, with Daniel Beat Müller and Steffen Wellinger as co-supervisors. I contribute to the Circular City project, part of NTNU’s Interdisciplinary Sustainable Initiatives.
Academic Background: I earned my Masters degree in Architecture from the University of Florence and hold postgraduate degrees in Design Research from the Bauhaus Foundation in Dessau, Anhalt University of Applied Sciences, and the Interdisciplinary Laboratory "Image-Knowledge-Gestaltung" at Humboldt University of Berlin. I also received an Erasmus Mundus M.Sc. in Building Information Modelling from Politecnico di Milano.
Professional Experience: Prior to my current roles, I was a University Assistant at the Institute of Architecture Technology (Researcher and Teaching Assistant) at the (TU Graz) Graz University of Technology, Austria. My architectural career spans over five years with projects across various building typologies and design stages in Germany, Italy, and Greece.
Publications
2025
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Aalto, Pasi;
Dittrich, Nils Maximilian;
Triantafyllidis, Georgios;
Mutale, Lombe;
Stolz, Beatrice Alexandra Pauline.
(2025)
Mapping Trondheim’s building stock.
Academic chapter/article/Conference paper
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Triantafyllidis, Georgios;
Mueller, Daniel Beat;
Wellinger, Steffen;
Huang, Lizhen.
(2025)
Accelerating circular cities with semi-automatic building information modeling for existing buildings.
Journal of Cleaner Production
Academic article
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Triantafyllidis, Georgios;
Mahnert, Karl-Christian;
Huang, Lizhen.
(2025)
BIM to GIS: Multi-Criteria Queries for Material Tracking in Circular Built Environments.
Journal of Circular Economy
Academic article
-
Triantafyllidis, Georgios;
Mueller, Daniel Beat;
Wellinger, Steffen;
Huang, Lizhen.
(2025)
Accelerating circular cities with semi-automatic building information modeling for existing buildings.
Journal of Cleaner Production
Academic article
2023
-
Triantafyllidis, Georgios;
Huang, Lizhen.
(2023)
A framework for semi-automated creation of Building Information Models for existing buildings.
Journal of Physics: Conference Series (JPCS)
Academic article
Journal publications
-
Triantafyllidis, Georgios;
Mueller, Daniel Beat;
Wellinger, Steffen;
Huang, Lizhen.
(2025)
Accelerating circular cities with semi-automatic building information modeling for existing buildings.
Journal of Cleaner Production
Academic article
-
Triantafyllidis, Georgios;
Mahnert, Karl-Christian;
Huang, Lizhen.
(2025)
BIM to GIS: Multi-Criteria Queries for Material Tracking in Circular Built Environments.
Journal of Circular Economy
Academic article
-
Triantafyllidis, Georgios;
Mueller, Daniel Beat;
Wellinger, Steffen;
Huang, Lizhen.
(2025)
Accelerating circular cities with semi-automatic building information modeling for existing buildings.
Journal of Cleaner Production
Academic article
-
Triantafyllidis, Georgios;
Huang, Lizhen.
(2023)
A framework for semi-automated creation of Building Information Models for existing buildings.
Journal of Physics: Conference Series (JPCS)
Academic article
Part of book/report
-
Aalto, Pasi;
Dittrich, Nils Maximilian;
Triantafyllidis, Georgios;
Mutale, Lombe;
Stolz, Beatrice Alexandra Pauline.
(2025)
Mapping Trondheim’s building stock.
Academic chapter/article/Conference paper
Teaching
Supervision
- Norwegian University of Science and Technology (NTNU)
BSc. Thesis
Role: Main Supervisor, Examiner
Title: Wood-based fire walls under new regulations (1998–2021)
Interaction between safety and CO2 footprint.
Thesis Description: The thesis explores how digital tools and parametric design can support sustainable construction by quantifying the CO₂ footprint of timber-based fire-rated walls. I guided the student in building parametric evaluation systems and integrating LCA data within Revit-based BIM environments. Building parametric BIM families in Revit, integrated SimaPro data, and performed embodied carbon LCA at the component level within the BIM workflow. The study also examined how evolving building regulations affect material demands and how these changes influence CO₂ emissions over time. - Krigsskole, Norway (Norwegian Military Academy)
BSc. Thesis
Role: External Supervisor
Title: Building Viability Assessment for Life Extension and Adaptive Reuse: A Case Study in the Norwegian Defence Sector.
Thesis Description: Information Management, Parametric Design and Sustainability; This bachelor's thesis examines the viability model as a tool for assessing existing buildings' potential for conversion and life extension. The study evaluates how buildings can be systematically categorized based on their suitability for current use and adaptability for future needs, enabling better long-term investment decisions. Through a case study approach, it demonstrates how this assessment framework can support more sustainable building management by identifying which structures are worth preserving and upgrading, rather than replacing.
Outreach
2025
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Academic lectureGedde, Kristina Bringedal; Triantafyllidis, Georgios; Huang, Lizhen; Mueller, Daniel Beat. (2025) Enhanced Material Intensities Considering Building-Specific Characteristics. Circular Building Sector Conference , Lund 2025-06-01 - 2025-06-03
2024
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PosterGedde, Kristina Bringedal; Triantafyllidis, Georgios; Ross, Lone; Huang, Lizhen; Müller, Daniel. (2024) How to select representative building typologies for updating material intensities? In the context of studying the building stock for urban mining, recycling, and refurbishment. Gordon Research Conference Industrial Ecology , Les Diablerets 2024-05-26 - 2024-05-31
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Academic lectureTriantafyllidis, Georgios; Huang, Lizhen. (2024) BIM to GIS: Multi-Criteria Queries for Material Tracking in Circular Built Environments. Circular Economy: The pathway towards a Sustainable Development , Chania 2024-09-11 - 2024-09-13
2023
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PosterTriantafyllidis, Georgios; Huang, Lizhen. (2023) A framework for semi-automated creation of Building Information Models for existing buildings. CISBAT 2023 - The Built Environment in Transition , Lausanne 2023-09-13 - 2023-09-15
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Academic lectureTriantafyllidis, Georgios; Huang, Lizhen. (2023) A Novel Data Acquisition Method for Existing Building Information Modelling. International Conference on Industrial Ecology , Leiden 2023-07-02 - 2023-07-05