| id |
ascaad2023_077 |
| authors |
Tabassum, Nusrat; Duarte, Jose; Nazarian, Shadi |
| year |
2023 |
| title |
Advancing 3D Concrete Printing for Affordable Housing: A Shape Grammar-Based Approach to Print Spanning Roof Structures |
| source |
C+++: Computation, Culture, and Context – Proceedings of the 11th International Conference of the Arab Society for Computation in Architecture, Art and Design (ASCAAD), University of Petra, Amman, Jordan [Hybrid Conference] 7-9 November 2023, pp. 344-364. |
| summary |
3D concrete printing (3DCP) technology is expected to address the construction industry's inefficiency, lack of skilled labor, and safety concerns, while tackling the housing shortage due to global population growth. Current applications in academia and industry have mainly focused on fabricating wall elements, which do not fulfill the potential of this technology to fully automate the construction process, including enclosures. In concrete construction, formwork is an essential part that fundamentally influences labor needs, quality, time, and cost. Many building components, such as walls, beams, columns, and prefabricated blocks, have been successfully printed without formwork using various additive manufacturing (AM) techniques for 3DCP. However, due to a 60-degree printing angle restriction when using a horizontal slicing technique and a corbelling printing method, to print spanning structures without formwork remains a challenge. Most state-of-the-art studies in 3DCP have focused on developing strategies to fabricate formwork, rather than developing new techniques for printing them without formwork. This research aims to leverage the power of shape grammar to overcome the challenges of printing spanning roof structures in 3DCP. By drawing inspiration from historical structures, we propose a multi-directional printing approach, integrating corbelling, radial, and inclined slicing techniques for toolpath design. Our objective is to establish shape grammar rules to break down enclosures into printable patches, design corresponding toolpaths using various slicing techniques, and validate the effectiveness of this approach by physically fabricating a prototype. To achieve this objective, an algorithm, incorporating shape grammar rules and numerical modelling software, to optimize the 3D concrete printing process for spanning roof structures was developed. Through this generative design system, designers can efficiently generate diverse and sustainable roof designs, specifically tailored for affordable housing solutions. |
| series |
ASCAAD |
| email |
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| full text |
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| references |
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| last changed |
2024/02/13 14:40 |
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