5-6 June 2025

FREI OTTO 100

THE SPIRIT OF LIGHTWEIGHT CONSTRUCTION

Institute for Lightweight Structures and Conceptual Design, University of Stuttgart, Germany

Frei Otto (1925-2015) was a visionary, innovative architect and master of lightweight structures. May 31, 2025 marks the 100th anniversary of his birth. To commemorate his exceptional spirit of experimentation, his works, methods, and international networks, the University of Stuttgart organizes a two-day convention.

Frei Otto 100 | The Spirit of Lightweight Construction will take place at the Institute for Lightweight Structures and Conceptual Design (ILEK) in Stuttgart-Vaihingen, formerly known as IL (Institut für Leichte Flächentragwerke). Its tent structure, designed by Frei Otto as a prototype for the German Pavilion at the EXPO ‘67 in Montreal, provides an inspiring space for open reflection on past and present achievements in the field of lightweight construction.

The two-day event will include a historical reflection on Frei Otto’s work, methods, and networks, supported by the testimonies of several contemporary witnesses. It will also focus on how different generations of researchers and practitioners interpret the legacy of the Stuttgart School of Lightweight Construction.

About

Symposium location

Institute for Lightweight Structures and Conceptual Design (ILEK)

Pfaffenwaldring 14
70569
Stuttgart
Germany

+49 (711) 685 63 599
ilek.uni-stuttgart.de/en

Contact: freiotto100@ilek.uni-stuttgart.de

Program

Organisers

  • Lucio Blandini is an engineer and architect with a special interest in sustainable lightweight systems and the relationship between architecture, engineering, and digital technologies. He is head of the ILEK and deputy spokesperson of the CRC 1244 on adaptive skins and structures.

     

  • Christiane Weber is a professor of the history of architecture at the University of Stuttgart. Her research focuses on the development of construction technology in architecture, civil engineering and urban planning. The aim of her research is to preserve the architectural heritage as an expression of European cultural history that creates identity.

Welcome greetings

Peter Middendorf

Rector of the University of Stuttgart

Nicole Razavi

State Minister for Regional Development and Housing

Werner Sobek

Founder and former head of ILEK

Keynotes

  • Georg Vrachliotis is a full professor and head of the Design, Data, and Society Group at TU Delft. Since January 1st, 2025, he is a Head of the Architecture Department of TU Delft’s Faculty of Architecture and the Built Environment.

  • Daniela Fabricius is an Assistant Professor in history and theory at the Weitzman School of Design at the University of Pennsylvania.

  • Kai-Uwe Bletzinger is a professor emeritus at the Technical University of Munich, former head of the Chair of Structural Analysis, and renowned expert in the development of form optimization and form-finding methods.

  • Mike Schlaich is a partner at the structural engineering firm schlaich bergermann partner (sbp), as well as a Full Professor and a head of the Chair of Conceptual and Structural Design at the Technical University of Berlin.

  • Achim Menges is an architect in Frankfurt and a full professor at Stuttgart University, where he is the founding director of the Institute for Computational Design and Construction and the director of the Cluster of Excellence Integrative Computational Design and Construction for Architecture.

  • Sigrid Adriaenssens is an Associate Professor in the Department of Civil and Environmental Engineering at Princeton University. There she directs the Form Finding Lab where she teaches courses on (non‐) linear mechanics of solids and slender structures, structural design, and the integration of engineering and the arts.

  • Jenny E. Sabin is an architectural designer, Chair of the Department of Design Tech and the Arthur L. and Isabel B. Wiesenberger Professor in Architecture. Sabin is principal of Jenny Sabin Studio, an experimental architectural design studio based in Ithaca, and director of the Sabin Lab at Cornell AAP.

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