CumInCAD is a Cumulative Index about publications in Computer Aided Architectural Design
supported by the sibling associations ACADIA, CAADRIA, eCAADe, SIGraDi, ASCAAD and CAAD futures

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_id 0b24
authors Chilton, J.C., Wester, T. and Yu, J.
year 1993
title Exploring Structural Morphology Using CAD
source [eCAADe Conference Proceedings] Eindhoven (The Netherlands) 11-13 November 1993
summary Often in the design process the student's imagination is restricted by their inability to visualise, model or accurately sketch ideas for innovative structural systems. By using CAD as a design tool it is possible to explore the morphology of complex structures and to be able to produce perspective drawings of them with relative ease. Within AutoCAD there is a small library of standard three-dimensional objects and surfaces that can be called upon to generate more complex forms. However, to further facilitate the architectural design process, an extended library of innovative structural forms would allow the professional designer, or student, greater design freedom and any increase in the palette of structural forms available should stimulate creativity. As practical examples, the paper describes how students have been encouraged to experiment with the use of structures which can only be physically modelled with difficulty and which are also difficult to represent on the two- dimensional surface of the drawing board unless the geometry has previously been determined by the methods described. These are (i) Reciprocal Frame three-dimensional beam grillage structures and (ii) plate domes created from lattice structures by point-to- plane duality. The problem, of representation of these structures has been overcome, in the first case, by generating AutoLISP procedures to draw the complex three-dimensional geometrical form automatically in AutoCAD and, in the second case, by the development of the computer program CADual.

series eCAADe
last changed 1998/08/24 09:08

_id ecaade2017_044
id ecaade2017_044
authors Fernando, Shayani, Reinhardt, Dagmar and Weir, Simon
year 2017
title Simulating Self Supporting Structures - A Comparison study of Interlocking Wave Jointed Geometry using Finite Element and Physical Modelling Methods
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 2, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 177-184
summary Self-supporting modular block systems of stone or masonry architecture are amongst ancient building techniques that survived unchanged for centuries. The control over geometry and structural performance of arches, domes and vaults continues to be exemplary and structural integrity is analysed through analogue and virtual simulation methods. With the advancement of computational tools and software development, finite and discrete element modeling have become efficient practices for analysing aspects for economy, tolerances and safety of stone masonry structures. This paper compares methods of structural simulation and analysis of an arch based on an interlocking wave joint assembly. As an extension of standard planar brick or stone modules, two specific geometry variations of catenary and sinusoidal curvature are investigated and simulated in a comparison of physical compression tests and finite element analysis methods. This is in order to test the stress performance and resilience provided by three-dimensional joints respectively through their capacity to resist vertical compression, as well as torsion and shear forces. The research reports on the threshold for maximum sinusoidal curvature evidenced by structural failure in physical modelling methods and finite element analysis.
keywords Mortar-less; Interlocking; Structures; Finite Element Modelling; Models
series eCAADe
last changed 2017/09/13 13:31

_id sigradi2016_809
id sigradi2016_809
authors García Amen, Fernando; Martín Iglesias, Rodrigo; Schieda, Alejandro; Lagomarsino, Federico; Miret, Santiago
year 2016
title Digital domes that become urban symbionts
source SIGraDi 2016 [Proceedings of the 20th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-7051-86-1] Argentina, Buenos Aires 9 - 11 November 2016, pp.892-896
summary Montevideo has a new visitor. In the heritage building of the german architect Karl Trambauer, located in the Old City, a new presence was installed filling the vacuum left by its former collapsed dome, seeking to restore a message, adding a new vision and recovering the lost dialogue between the architecture, the city and its inhabitants. This paper summarizes and explains the experience of the workshop Adaptation 2015, held on September 2015 at the Universidad de la República, Uruguay. Exposing the theoretical framework, design strategies, morphogenetic development, digital manufacturing experimentations, conclusions and open questions from the experience made. We will go through this temporary intervention on Trambauer’s building, being a rare but symbiotic object, with parametric genes, digital and handcrafted manufacture, and also looking for the impact of theory and academic practices in the city.
keywords Urban intervention – Cities – Heritage – Parametric design – Digital fabrication
series SIGraDi
last changed 2017/06/21 12:21

_id ecaade2017_037
id ecaade2017_037
authors Hassan Khalil, Mohamed
year 2017
title Learning by Merging 3D Modeling for CAAD with the Interactive Applications - Bearing walls, Vaults, Domes as Case study
source Fioravanti, A, Cursi, S, Elahmar, S, Gargaro, S, Loffreda, G, Novembri, G, Trento, A (eds.), ShoCK! - Sharing Computational Knowledge! - Proceedings of the 35th eCAADe Conference - Volume 1, Sapienza University of Rome, Rome, Italy, 20-22 September 2017, pp. 353-362
summary The development and the innovation of tools, techniques and digital applications represent a challenge for those who are in charge of architectural education to keep up with this development. This is because these techniques provide potentials that are not available in the traditional method of teaching. This raises an important question: can these tools and techniques help to achieve the targeted outcomes of education? This research paper discusses how to integrate both digital 3D models, of CAAD, and interactive applications for the development of architectural education curriculum. To test this, a case study has been conducted on the subject of building construction, for the second year at the faculty of engineering, specifically, the bearing walls construction system. In addition, this study has been divided into three parts. Through the first part, the scientific content of the curriculum, which tackles the bearing walls, has been prepared. The second part shows how to convert the scientific content into an interactive content in which the students learn through the experiment and the simulation of the traditional construction methods as the students a acquire construction skills and the ability to imagine different structural complexities. The third part includes the creation of both the application and the software containing the interactive curriculum. Workshop for the students has been held as a case study to test the effectiveness of this development and to recognize the pros and cons. The results confirmed the importance of integrating this applications into architectural education.
keywords CAAD; 3D modeling ; Building Construction; Interactive applications; Bearing walls systems
series eCAADe
last changed 2017/09/13 13:21

_id acadia19_310
id acadia19_310
authors Leblanc, Maxime; Vardouli, Theodora
year 2019
title Bursting the Bubble
source ACADIA 19:UBIQUITY AND AUTONOMY [Proceedings of the 39th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-578-59179-7] (The University of Texas at Austin School of Architecture, Austin, Texas 21-26 October, 2019) pp. 310-319
summary The “bubble" is an oft-used keyword in discussions about Virtual Reality (VR) and Virtual Environments (VE). Apart from pointing to the growing, yet precarious, rise of these domains in technology markets, the “bubble" is also a prolific metaphor for spatial, experiential, and technical aspects of virtual worlds. Combining material from architectural history and history of computing, this paper situates and critically activates two threads of the “bubble" metaphor: the bubble as a closed, autonomous system severed from its surroundings, and the bubble as an ubiquitous, limitless environment. Through historical episodes from the development of Head Mounted Displays (HMDs), the paper positions current VR HDMs into a genealogy of miniaturization of actual architectural “bubbles”— from military simulation domes to wearable “micro environments”—and examines the techniques that support the illusion of these closed, autonomous worlds as limitless and ubiquitous. The paper concludes with the description of a critical design project that exposes the limits of VR's limitless worlds and the role of context (physical, architectural) in both making and breaking the VR bubble.
series ACADIA
type normal paper
last changed 2019/12/18 08:03

_id sigradi2017_084
id sigradi2017_084
authors Macêdo dos Santos, Deborah; José Nuno Dinis Cabral Beirão
year 2017
title Generative tool to support architectural design decision of earthbag building domes
source SIGraDi 2017 [Proceedings of the 21th Conference of the Iberoamerican Society of Digital Graphics - ISBN: 978-956-227-439-5] Chile, Concepción 22 - 24 November 2017, pp.584-589
summary The interest in earthbag dome construction (also known as sandbag, superadobe or superblock construction) is increasing as a world consciousness develops to achieve the planet’s equilibrium for sustainable living. The main objective of this research is to develop a parametric tool to help architects modeling virtual earthbag domes from ideation to construction phase. This challenge has been addressed by adopting an experimental methodology that explores parametric generative design with the use of visual programming language (VPL). In this paper we present the development of a tool for the ideation level including features that allow for the calculation of material quantification. The usability of the tool was validated by earthbag constructors and architects.
series SIGraDi
last changed 2018/07/27 08:08

_id ijac20086401
id ijac20086401
authors Maleki, Maryam M.; Woodbury, Robert F.
year 2008
title Reinterpreting Rasmi Domes with Geometric Constraints:A Case of Goal-seeking in Parametric Systems
source International Journal of Architectural Computing vol. 6 - no. 4, 375-395
summary Geometry has long been a generator of architecture. In traditional Persian architecture, Rasmi domes project a drawing onto a predefined 3D geometry. In fact, the word 'rasmi' and the verb for drawing in Persian have the same linguistic root. Projection is readily done in manual drawings or conventional CAD programs. From a constraint perspective, the dome is constrained by the drawing and the 3D geometry. If the latter constraint is replaced by invariance of distance on the original drawing, a class of domes results, but members of this class cannot be computed conventionally. Class members are developable from a planar layout of triangles, which is, in turn, generated by a simple drawing rule. This yields a parametric structure of four parameters. Three determine the initial planar diagram. One determines configuration. Further, domes in the class are mechanisms: they are not fully specified by the constraints and parameters. We develop the geometric constraints representing the location of the defining points of a dome and present a goal-seeking algorithm to solve the constraints within a propagation-based parametric modeling system.
series journal
last changed 2009/03/03 06:48

_id ecaade2020_468
id ecaade2020_468
authors Mostafavi, Sina, Kastrati, Valmir, Badr, Hossam and Mazlan, Shazwan
year 2020
title Design Computation to Robotic Production Methods for Reciprocal Tessellation of Free-from Timber Structures - Design, production, and assembly of 100 years Bauhaus wood Pavilion
source Werner, L and Koering, D (eds.), Anthropologic: Architecture and Fabrication in the cognitive age - Proceedings of the 38th eCAADe Conference - Volume 2, TU Berlin, Berlin, Germany, 16-18 September 2020, pp. 413-422
summary In a reciprocal frame structure, at any given joint, there are only two members connecting to each other. Therefore, the joints in a standard reciprocal structure are topologically identical. Due to these topological similarities between the joints, the parametric modeling of a reciprocal frame structure applied to a geometrically regular surface, such as domes and symmetric shells, is practical, and it has been explored in several projects previously. In this context, this paper presents an integrated computational design to robotic production process of a free form wooden pavilion with a non-uniform tessellation pattern with differentiated cell sizes. The case study, on the one hand, elaborates on the challenges of solving reciprocal tessellation on complex geometries, and on the other hand, discusses the chosen and developed robotic production approach as a feedback loop that informs the design process.
keywords Reciprocal Structure; Wood Assembly; Design to Robotic Production; Reciprocal Tessellation; Free Form Timber Structure
series eCAADe
last changed 2020/09/09 09:54

_id cf2009_poster_45
id cf2009_poster_45
authors Okuda, Shinya
year 2009
title Bio-shell (Biodegradable vacuum-formed modularized shelter)
source T. Tidafi and T. Dorta (eds) Joining Languages Cultures and Visions: CAADFutures 2009 CD-Rom
summary This poster demonstrates how digitally fabricated vacuum-formed components can provide a new type of lightweight construction applicable to architecture. Surface-active systems such as a thin-shell concrete domes are some of the most material-efficient structures. Despite their efficiency few have been constructed recently due to necessary extensive labor cost. However, the growing concern for a worldwide shortage of natural resources and rising material costs, suggests that we reconsider the use of efficient structures, such as surface-active systems. Vacuum formed plastics mainly used in industrial design have strong merit based on their fast and low-cost mass production. Together with the recent emergence of digital fabrication technologies, the vacuum forming process is becoming an attractive fabrication technique for new and innovative lightweight structures.
keywords Digital Fabrication, Biodegradable, lightweight structure
series CAAD Futures
type poster
last changed 2009/08/21 05:41

_id acadia14projects_83
id acadia14projects_83
authors Peters, Brian
year 2014
title Vertex.3D
source ACADIA 14: Design Agency [Projects of the 34th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 9789126724478]Los Angeles 23-25 October, 2014), pp. 83-86
summary Inspired by geodesic domes, Vertex.3D juxtaposes historic mass production manufacturing techniques and the mass customization possible with 3D printing. This project is an exploration of the feasibility of using standard desktop 3D printing machines and plastic filament to fabricate full scale structures.
keywords Digital fabrication and construction 3D Printing, Parametric Design, Temporary Structure, Geodesic, Tectonics, Materials Logic
series ACADIA
type Research Projects
last changed 2014/09/29 05:57

_id caadria2013_258
id caadria2013_258
authors Reinhardt, Dagmar; William Martens and Luis Miranda
year 2013
title Sonic Domes – Solving Acoustic Performance of Curved Surfaces by Interfacing Parametric Design, Structural Engineering and Acoustic Analysis
source Open Systems: Proceedings of the 18th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2013) / Singapore 15-18 May 2013, pp. 529-538
wos WOS:000351496100052
summary This paper addresses the acoustic performance of complex curved surface geometries that are commonly known to pose problems of sound concentration, thus affecting speech intelligibility and audience experience in spaces of temporal arts performance. It reviews an open system of design research in which parametric design process, structural analysis and acoustic analysis are deployed to improve the sound of ellipsoidal structures in relation to sound source and audience positions, by adapting the height, dimension and centre point of a dome structure, consequently improving the acoustic behaviour of the performance space. The paper discusses an iterative design, analysis and optimization processes, in which a number of generative form variations were developed in Grasshopper, and reworked in McNeel Rhino, tested in engineering software (Strand7), and evaluated in acoustic simulation (ODEON). This allowed an interdisciplinary team to develop, test and evolve a design proposal that shows one solution for avoiding sound concentration and consequently improving acoustic performance in complex intersecting and curved geometries of a multifunctional building.  
keywords Parametric design, Sound concentration, Curved surfaces, Structural engineering, Acoustic simulation  
series CAADRIA
last changed 2016/05/16 09:08

_id caadria2009_013
id caadria2009_013
authors Rosenberg, Daniel
year 2009
title Novel Transformations of Foldable Structures
source Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 195-204
summary Most foldable structures have been designed to optimize collapsibility and structural performance. Likewise, they have been solely applied to a limited number of architectural shapes such as arches, domes or geodesics. While the constant folding process between retracted and deployed states, has been the main concern of designers, non-constant transformations and the in-between states remains unexplored. This research will study non-constant transformations in the in-between states, with the aim to find novel shapes and extend the repertoire of current applications. Initially, existing structures will be modified in order to find what type of shape transformations can be produced. Finally, a novel solution, through a digital model and a kinetic physical prototype, will be proposed.
keywords Transformation; foldable structures; kinetic architecture
series CAADRIA
last changed 2012/05/30 19:29

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