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Advances in
Architectural Geometry 

October 6 – 7, 2023
University of Stuttgart,

Register now!


Geometry lies at the core of the architectural design process. It is omnipresent, from the initial form-finding stages, to novel manufacturing techniques, to the construction, and to post occupancy monitoring. But the role of geometry in architecture and engineering is also continuously evolving.

Geometry increasingly plays a role in modeling environments and processing sensing information. Modern geometric computing provides a variety of tools for the efficient design, analysis, and manufacturing of complex shapes. Besides descriptive geometry controlling form, algorithmic processes play a crucial role in integrating disciplinary input.

On the one hand this opens up new horizons for architecture. On the other hand, the architectural context also poses new problems to geometry. Around these problems the research area of architectural geometry has emerged. It is located at the common border of architecture with applied geometry, computational design, mathematics, and manufacturing.

Register now!


Advances in Architectural Geometry (AAG) is a conference where both theoretical and practical work linked to new geometrical developments is presented. It involves architects, engineers, computer scientists, mathematicians, software and algorithms designers and contractors. We aim at connecting researchers from architectural and engineering practices, academia and industry.

AAG has become a reference both in research and in practice and is supported by the direct participation of the most renowned architectural design and engineering offices along with research laboratories.

The symposium is a biennial event. It was held first in 2008 and 2010 in Vienna, 2012 in Paris, 2014 in London, 2016 in Zurich, 2018 in Gothenburg and 2020 in Paris.

In 2023, it will take place in Stuttgart from October 4 – 7, organized by the Cluster of Excellence IntCDC (Integrative Computational Design and Construction for Architecture).

Submit final paper here 



Wednesday, October 4

08:30 – 09:00 Check-In

09:00 – 09:30 Welcome

09:30 – 12:00 Parallel Workshops 1 – 6

12:00 – 13:00 Lunch Break

13:00 – 16:00 Parallel Workshops 1 – 6

16:00 – 18:00 Socializing Tour: DEMONSTRATOR D1244 and ILEK Tent.


Thursday, October 5

09:00 – 12:00 Parallel Workshops 1 – 6

12:00 – 13:00 Lunch Break

13:00 – 17:00 Parallel Workshops 1 – 6

17:00 – 18:30 Presentation workshop results



Friday, October 6

08:00 – 08:45 Check-In

08:45 – 09:00 Welcome

09:00 – 09:30 KEYNOTE – Sigrid Adriaenssens

09:30 – 10:40 PAPER SESSION I

Andrei Nejur: Structurally Aware Fabrication for Large-Scale Curved Architectural Skins

Lorenzo Santelli: A Generative Approach Towards the Design of a Spherical Structural Envelope

Lawson Spencer: The Finite Element Method (FEM) of the Unlog Tower

Dylan Wood: HYGROSHELL – In Situ Self-Shaping of Curved Timber Shells

10:40 – 11:10 Coffee Break

11:10 – 12:20 PAPER SESSION II

Mohammad Mansouri & Aly Abdelmagid: Corresponding Principal and Asymptotic Patches for Negatively-Curved Gridshell Designs

Moritz Niebler: Bent-on-Site Flat-Pack Delivery of a Timber Shell

Romain Mesnil: Design and Construction of a Pseudo-Geodesic Gridshell

Eike Schling: Asymptotic Geodesic Hybrid Timber Gridshell

12:20 – 12:50 KEYNOTE – Wolf Mangelsdorf

12:50 – 14:00 Lunch Break

14:00 – 14:30 Cluster of Excellence IntCDC – livMatS Biomimetic Shell

14:30 – 15:25 PAPER SESSION III

Daniel Chauhan: Daisy: A Data-Driven Multi-Objective Design Tool

Daria Dordina & Cyrill Milkau: Point Cloud to True-to-Deformation Free-Form NURBS

Keyan Rahimzadeh: Beyond the Hypar: Predicting Buckled Shapes in Bent Glass with Machine Learning

15:25 – 16:20 PAPER SESSION IV

Samim Mehdizadeh: Roll-Locks

Aly Abdelmagid: Design Model for Block-Based Structures from Triply Orthogonal Systems of Surfaces

Tobias Schwinn: Integrative Agent-Based Design Modelling for Segmented Timber Shells

16:20 – 17:00 Coffee Break

17:00 – 18:00 ITECH SESSION*

18:00 – 18:30 KEYNOTE – Janet Echelman

18:30 – 18:40 Conclusion Day One

18:40 – 21:00 GET-TOGETHER

*ITECH SESSION: The Integrative Technologies & Architectural Design Research M.Sc. Program (ITECH) is an interdisciplinary, research-oriented, experiment-based program shaped around contemporary aspects of the built environment and practice. The goal of the ITECH program is to prepare a new generation of students from different disciplines for the continuing advancement of technological and computational processes in development of the built environment through merging the fields of architecture, engineering, construction, computer science and natural sciences. In celebration of the program’s 10th anniversary, ITECH students and alumni will present highlights featuring the impact the program has had over the past years.


Saturday, October 7

08:55 – 09:00 Welcome

09:00 – 09:30 KEYNOTE – Molly Wright Steenson

09:30 – 10:40 PAPER SESSION V

Ayoub Lharchi: A Design Modeling Framework for Multi Material Biopolymer 3D Printing

Seiichi Suzuki: BamX: Rethinking Deployability in Architecture Through Weaving

Seri Nishimoto: Transformable Surface Mechanisms by Assembly of Geodesic Grid Mechanisms

Christoph Schlopschnat: Co-Design of Fibrous Walls for Multistory Buildings

10:40 – 11:10 Coffee Break

11:10 – 12:05 PAPER SESSION VI

Shermin Sherkat: Automated Task Planning for Prefabrication Using AI Planning

Jingwen Wang & Wenjun Liu: Multi-Robotic Assembly of Discrete Shell Structures

Mehrzad Esmaeili Charkhab & Yuxi Liu: Designing for Robotic (Dis-)Assembly

12:05 – 13:00 PAPER SESSION VII

Uday Kusupati: RUM: Reconfigurable Umbrella Mesh

Yuta Shimoda: Developable Membrane Tensegrity Structures Based on Origami Tessellations

Andrea Micheletti: Parametric Design of Tensegrity-Origami Structures

13:00 – 14:00 Lunch Break

14:00 – 14:30 KEYNOTE – Michael Wimmer

14:30 – 15:40 PAPER SESSION VIII

Rupert Maleczek: From Quad Filling to Wrinkled Surfaces

Iman Fayyad: Bending Cylinders: A Geometric Syntax for Zero-Waste Architecture

Lotte Scheder-Bieschin: Curved-Crease Flat-Foldable Bending-Active Plate Structures

Alex Seiter: Form Finding of a Sheet Metal Shell by Generative Design and Pareto Optimization According to the Principles of Structural Morphology

15:40 – 16:10 Coffee Break

16:10 – 17:05 PAPER SESSION IX

Saqib Aziz / Jamie Queisser: SearchField: Navigating N-Dimensional Design Spaces

Sarah Mokhtar: Neural Implicit Fields for Performance-Informed Geometries in Building Design

Demi Fang: Quantifying the Influence of Continuous and Discrete Design Decisions Using Sensitivities

17:05 – 18:00 PAPER SESSION X

Jelena Milosevic: An Approach to Designing Architectural Structures Using 3D Graphic Statics

Hua Chai: Rationalizing Principal Stress Line Networks Using an Agent-Based Modelling Approach

David Forster: Design and Optimization of Beam and Truss Structures Using Alternative Performance Indicators Based on the Redundancy Matrix

18:00 – 18:30 KEYNOTE – Kazuyo Sejima

18:30 – 18:40 Conclusion Day Two

Download the program here

Keynote Speakers


Novel ideas on current and emerging topics in architectural geometry, digital design, simulation, artificial intelligence, and manufacturing will be presented and discussed at the AAG 2023 workshops.
Workshops take place prior to the conference on October 4 and 5, 2023.
It is possible to register for one of the parallel workshops independently of the conference.

Scientific Chair

Paper Committee

Sigrid Adriaenssens, Princeton University

Aleksandra Anna Apolinarska, ETH Zurich

Iro Armeni, CEE Stanford University

Axel Kilian, MIT Cambridge

Tobias Bonwetsch, ROB Technologies

Daniel Bosia, IStructE

Jean Francois Caron, Ecole des Ponts Paris Tech

Jeroen Coenders, White Lioness Technologies

Matias Del Campo, University of Michigan

Bailin Deng, Cardiff University

Philipp Eversmann, University of Kassel

Billie Faircloth, KieranTimberlake

Isak Worre Foged, Royal Danish Academy

Florian Gauss, knippershelbig

David Jason Gerber, University of Southern California

Marcelyn Gow, servo los angeles

M. Hank Haeusler, University of New South Wales

Laurent Hauswirth, Gustave Eiffel University

Markus Hudert, Aarhus University

Sam Conrad Joyce, Singapore University of Technology and Design

Toni Kotnik, Aalto University

Riccardo La Magna, University of Karlsruhe

Julian Lienhard, University of Kassel

Rupert Maleczek, University of Innsbruck

Romain Mesnil, Ecole des Ponts Paris

Roi Poranne, University of Haifa

Helmut Pottmann, KAUST

Christopher Robeller, Augsburg University

Marc Schnabel, Aurel FORUM8

Bob Sheil, University College London

Paul Shepherd, University of Bath

Martin Tamke, Royal Danish Academy – CITA

Xavier Tellier, Champs-sur-Marne

Oliver Tessmann, University Darmstadt

Martha Tsigkari, Foster + Partners

Amir Vaxman, University of Utrecht


AAG 2023
The conference, workshops and opening reception take place at the city campus of the University of Stuttgart: University of Stuttgart
Keplerstr. 17
70174 Stuttgart

Socializing Tour: DEMONSTRATOR D1244 and ILEK Tent.
SFB 1244 Demonstrator
Pfaffenwaldring 14
70569 Stuttgart

The SFB 1244 Demonstrator High-Rise Building at the blue hour
Photo: René Müller Photographie, Stuttgart

We are here to help and answer any question you might have. Please contact us via e-mail or use our contact form.


Ibis Stuttgart Centrum

Ibis Stuttgart Centrum
Marienplatz 8-10
70178 Stuttgart

Single room incl. breakfast _ 125 € / night

To be booked via email or
Code: AAG 2023

Hotel Azenberg

Hotel Azenberg
Seestr. 114 – 116
70174 Stuttgart

Single room incl. breakfast _ 128 € / night

To be booked via email:
Code: AAG 2023


Join us in our socializing tour at the Institute for Lightweight Structures and Conceptual Design (ILEK). In this activity, you will visit the demonstrator D1244 as well as the ILEK tent, learning about their design, structure, functionality and history. The director of the institute, Prof. Lucio Blandini, will greet us with a speech at 17:30 p.m. and at 18:00 p.m. we will go through the structures in a learning journey. After the tour you can stay for a while to share a drink with the other participants or take the shuttle bus back to the city center (public transport is also available near the venue, in case you’d like to stay longer).

Meeting point: between the buildings KI and KII from the University of Stuttgart, campus city center.
Transport: by shuttle bus from city center to campus Vaihingen. The same bus will take you back to the city center after the tour ends.
Date: on Wednesday, October 4, 2023 at 16:00 p.m. (after the last workshop session).

The demonstrator high-rise building, D1244

D1244 is a lightweight high-rise building specifically designed to drastically reduce its consumption of resources as well as environmental impacts. The building components are conceived in a way such that they can be separated and recycled once their service life has been exceeded. The load-bearing structure was designed as a steel frame construction stiffened by a set of cross bracings that span three floors each. As one of the unique features of the demonstrator high-rise, actuators are integrated strategically in some of the columns and cross bracings. Through controlled adjustments of the actuators, the load transfer in the structure can be manipulated and thus structural performance can be significantly improved. 

Throughout the project, existing building components such as floor slabs will either be replaced by adaptive systems or equipped with newly developed actuators and sensors. In order to best capture the behaviour of the load-bearing structure with little influence from non-structural elements, a separate staircase tower has been constructed for vertical access as well as cable routing. The main tower and the staircase tower are separated by a distance of 2.7 m.

The demonstrator high-rise is instrumented by sensors that allow real-time identification of the external disturbances. Employing a closed-loop control system, the load-bearing structure can respond to a wide range of disturbances. For an instance, if the high-rise starts to vibrate under the influence of strong winds, excessive responses can be mitigated. This way, safety and comfort requirements on vibrations can be satisfied without increasing the structure’s cross-section sizes.

The Demonstrator High-Rise Building at the blue hour
Photo: René Müller Photographie, Stuttgart

The ILEK tent

About the ILEK tent (text from Manuela Brüggeboes)

  • 1964 Competition for the German Pavilion in Montreal won by Rolf Gutbrot, Frei Otto and Peter Strohmeyer.

    Form finding: The form originated in a tulle model and was checked after its construction by means of a soap skin model. For design reasons (e.g. connection details, material thickness), the shape deviates from the minimum surface at the high point, since the surface is introduced tangentially at the high point. In order to take dimensions from the model, the model and ‚original‘ must be geometrically similar. This depends on the prestress, so there must be a static-elastic similarity of these two.

  • 1966 Since computer simulations and real reference structures were not available, an experimental building (460 sqm – 1/17th of the area of the Expo Pavilion) was erected on the grounds of the University of Stuttgart, about 2 km from the present location. This involved only the rope net with a mesh size of 50 x 50 cm made of 12 mm stranded spiral ropes completely prefabricated. Extensive tests on vibration behavior, deformation behavior and the like were carried out. It was also used to test assembly and detailing. The assembly was adopted for Montreal. Some of the details had to be further developed.
  • 1967 Expo Montreal
  • 1968 Due to the decision to move the IL from the city center to Vahingen, the test building is moved to its present location. This process takes one day. The perimeter cables are hooked into the prepared foundations and the net was prestressed by erecting the pylon and tightening the guy points. The vertical glass frames of the facade are prestressed to minimize the deformation of the edge rope for the glass panes. The pylon (d=42cm) is supported at the bottom bearing in a ’sand pot‘. The entire interior was designed by Frei Otto especially for this building. The roof was covered with Eternit shingles. Underneath is thermal insulation made of mineral wool.
  • 1990 One of Frei Otto’s few permanently used tent buildings becomes one of the youngest listed buildings in BW.
  • 1993 Extensive renovation. Roofing, skylight, all-round glazing, electrical and sanitary installations, heating and flooring are renewed.

The ILEK tent
Photo: ILEK

Symposium Organizers

Symposium Organizers

Media Partners

AAG 2023 Media Partner


AAG2023 gold partner

AAG2023 silver partner

AAG2023 bronze

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AAG 2023 Newsletter

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