Digital design of automatically wound shear reinforcement for non-prismatic concrete beams

Anna Perepechay, Saverio Spadea, Eduardo Costa, Paul Shepherd

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Concrete is the world’s most widely used man-made material, accounting for around 7% of global CO2 emissions. Currently, up to half of the concrete used in buildings is unnecessary, as it is there because it is shaped using prismatic formworks, which are structurally inefficient. Recent research has demonstrated that flexible formwork can be used to form concrete members of any shape and that reinforcement can be woven into geometrically appropriate cages. This process is well suited for robotic automation, enabling off-site casting of non-prismatic beams with minimal human involvement. In a previous contribution, an iterative optimisation process was implemented in a parametric modelling framework to generate and analyse non-prismatic beams in bending, considering the constraints imposed by the use of fabric formwork. The current effort focuses on the winding process, which triggers further design constraints while considerably contributing, together with the concrete shape sections, to the shear strength of the beams. The analytical tool is linked to the generative geometry process and an optimisation tool, which can inform the parametric design of flexible beams with minimal embodied carbon.

Original languageEnglish
Title of host publication14th fib Phd Symposium in Civil Engineering, 2022, Proceedings
EditorsMarco di Prisco, Alberto Meda, Gyorgy L. Balazs
Publisherfib. The International Federation for Structural Concrete
Number of pages8
ISBN (Print)9782940643172
Publication statusPublished - 2022
Event14th fib PhD Symposium in Civil Engineering, 2022 - Rome, Italy
Duration: 5 Sept 20227 Sept 2022

Publication series

Namefib Symposium
ISSN (Print)2617-4820


Conference14th fib PhD Symposium in Civil Engineering, 2022

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Materials Science (miscellaneous)


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