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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	ecaade2023_138
id	ecaade2023_138
authors	Crolla, Kristof and Wong, Nichol
year	2023
title	Catenary Wooden Roof Structures: Precedent knowledge for future algorithmic design and construction optimisation
source	Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, pp. 611–620
doi	https://doi.org/10.52842/conf.ecaade.2023.1.611
summary	The timber industry is expanding, including construction wood product applications such as glue-laminated wood products (R. Sikkema et al., 2023). To boost further utilisation of engineered wood products in architecture, further development and optimisation of related tectonic systems is required. Integration of digital design technologies in this endeavour presents opportunities for a more performative and spatially diverse architecture production, even in construction contexts typified by limited means and/or resources. This paper reports on historic precedent case study research that informs an ongoing larger study focussing on novel algorithmic methods for the design and production of lightweight, large-span, catenary glulam roof structures. Given their structural operation in full tension, catenary-based roof structures substantially reduce material needs when compared with those relying on straight beams (Wong and Crolla, 2019). Yet, the manufacture of their non-standard geometries typically requires costly bespoke hardware setups, having resulted in recent projects trending away from the more spatially engaging geometric experiments of the second half of the 20th century. The study hypothesis that the evolutionary design optimisation of this tectonic system has the potential to re-open and expand its practically available design solution space. This paper covers the review of a range of built projects employing catenary glulam roof system, starting from seminal historic precedents like the Festival Hall for the Swiss National Exhibition EXPO 1964 (A. Lozeron, Swiss, 1964) and the Wilkhahn Pavilions (Frei Otto, Germany, 1987), to contemporary examples, including the Grandview Heights Aquatic Centre (HCMA Architecture + Design, Canada, 2016). It analysis their structural concept, geometric and spatial complexity, fabrication and assembly protocols, applied construction detailing solutions, and more, with as aim to identify methods, tools, techniques, and construction details that can be taken forward in future research aimed at minimising construction complexity. Findings from this precedent study form the basis for the evolutionary-algorithmic design and construction method development that is part of the larger study. By expanding the tectonic system’s practically applicable architecture design solution space and facilitating architects’ access to a low-tech producible, spatially versatile, lightweight, eco-friendly, wooden roof structure typology, this study contributes to environmentally sustainable building.
keywords	Precedent Studies, Light-weight architecture, Timber shell, Catenary, Algorithmic Optimisation, Glue-laminated timber
series	eCAADe
email
last changed	2023/12/10 10:49

_id	cf2011_p170
id	cf2011_p170
authors	Barros, Mário; Duarte José, Chaparro Bruno
year	2011
title	Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
source	Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 181-200.
summary	The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords	Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	c7e0
id	c7e0
authors	Maria Gabriela Caffarena Celani
year	2002
title	BEYOND ANALYSIS AND REPRESENTATION IN CAD: A NEW COMPUTATIONAL APPROACH TO DESIGN EDUCATION
source	Submitted to the Department of Architecture in partial fulfillment of the requirements for the degree of Doctor of Philosophy in the field of Architecture: Design & Computation at the Massachusetts Institute of Technology
summary	This thesis aims at changing students' attitude towards the use of computer-aided design (CAD) in architecture. It starts from the premise that CAD is used mostly for analysis and representation, and not as a real design aide, and that architecture students have a bias against learning computer programming. For this purpose, a prototypical instruction system that mixes computer-aided design and computational design theory was developed, based on a series of fundamental concepts that are common to both fields. This system was influenced by Mitchell's (1987) The Art of Computer Graphics Programming and Stiny's (1976) shape grammars. Despite being based on solid theoretical foundations, CAD has progressively become an exclusively practical tool, since its origins in the 50's and 60's, while computational design theories have been mostly restricted to the academic circles. This thesis proposes an inversion in the present situation: the study of CAD theory, and the application of computational design into practice. The system proposed provides a conceptual framework that can be adapted to different circumstances, including course formats and resources, as well as students' background and technical training. It is based on seven fundamental concepts from computational design theories that are also important to the study of shape grammars: symmetry, recursion, rule-based compositions, parameterization of shapes, generative systems, algorithmization of design procedures, and shape emergence. These concepts are introduced within a CAD context, where their practical implementation and experimentation are possible, focusing the understanding of the computational nature of design. During this research, the proposed system was tested in two case studies with students from schools that had contrary orientations in terms of the importance of CAD in the architectural curriculum. In these experimental courses, students' activities evolved from using a commercial CAD tool in an innovative way, to the use of programming techniques for creating meaningful tools. Despite not having a statistical reach, the fieldwork allowed drawing preliminary conclusions about the proposed system's efficacy, since virtually all the students reported changing their understanding of the role of CAD in architecture, while some also acknowledged a conceptual influence in other subjects and in the way they see architecture.
keywords	Symmetry
series	thesis:PhD
type	normal paper
email
more	http://www.fec.unicamp.br/~celani/
last changed	2004/11/17 20:51

_id	0740
authors	Herman, M. Jackson, N. and Pomerenke, S.
year	1987
title	Four-D Architectural Exploration Through CAD: Applications of the Computer to Architectural History
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 55-64
doi	https://doi.org/10.52842/conf.acadia.1987.055
summary	This paper, which is based on ongoing research, demonstrates methods of utilizing Computer-Aided Design (CAD) to explore objects of architectural significance in relation to time and space. The paper shows how the use of animated walk-through allows these objects to be experienced with the realism of built form which no other means of recording can achieve. The paper argues that, through the use of the computer, the whole nature of Architectural History, as it is currently taught in schools of architecture, will need to be changed and that a more pragmatic, hands- on approach to the subject will have to be adopted. Thus we advocate that the computer, the tool of today and the future, will allow students to experience architecture in the way they did in the past, from the Grand Tour to the architectural apprenticeship, aU before the introduction of architectural academies.
series	ACADIA
type	normal paper
last changed	2022/06/07 07:51

_id	6683
authors	Rasdorf, William J. and Wang, TsoJen E.
year	1987
title	Spike : A Generic Design Standards Processing Expert System
source	Southampton, UK: Computational Mechanics Publications, pp. 241-257. Also published in : Applications of Artificial Intelligence in Engineering International Conference Proceedings (2nd. : 1987 : Boston, MA.)
summary	Standards, codes, and specifications play an important role in the design of buildings, bridges, and other engineering systems. A design configuration must be checked against all standards to ensure that it is acceptable. This process of design conformance checking using standards is often very tedious. The successful automation of conformance checking is one of the components of a comprehensive computer-aided design system. In that past, standards were interpreted and converted into application programs written in procedural programming languages such as FORTRAN. This approach is extremely inflexible and often error-prone. To support a fully automated computer-aided design system, standards must be incorporated into the design process in a more generic and flexible manner. This paper investigates the feasibility of alternatively casting standards in a form suitable for processing in a knowledge-based expert system environment. The emergence of expert systems from artificial intelligence research has provided a technology that readily lends itself to the automation of design standards. Knowledge-based expert systems have become a powerful tool in tackling domains like design where some of the problem-solving knowledge is diverse and ill-structured. Using an expert system tool, a standard can be represented and processed independent of a CAD application program. Two prototype standards processing systems utilizing the production system approach have been constructed and are presented herein. Although the obvious direct translation casting the provisions of a standard as rules in a production system has its advantages, a more generic and flexible representation scheme is proposed herein. The approach advocated in this paper is to represent standards as databases of facts which can be readily and generically processed by an expert system. The database representation is derived from a unified view of standards obtained by using the standards modeling tools proposed by previous researchers in this field during the past decade. Building on this existing technology resulted in a knowledge- based standards processing architecture which is generic, modular, and flexible. An implementation of this architecture is presented and described
keywords	standards, civil engineering, expert systems
series	CADline
last changed	2003/06/02 13:58

_id	66e5
authors	Rasdorf, William J. and Wang, TsoJen E.
year	1987
title	Generic Design Standards Processing in a Knowledge-based expert system Environment
source	Design Process, National Science Foundation Workshop Proceedings. 1987. pp. 267-291. CADLINE has abstract only
summary	Standards, codes, and specifications play an important role in the design of buildings, bridges, and other engineering systems. A design configuration must be checked against all standards to ensure that it is acceptable. This process of design conformance checking using standards is often very tedious. The successful automation of conformance checking is one of the components of a comprehensive computer-aided design system. In the past, standards were interpreted and converted into application program written in procedural programming languages such as FORTRAN. This approach is extremely inflexible and often error prone. To support a fully automated computer-aided design system, standards must be incorporated into the design process in a more generic and flexible manner. This paper investigates the feasibility of alternatively casting standards in a form suitable for processing in a knowledge-based expert system environment. The emergence of expert systems from artificial intelligence research has provided a technology that readily lends itself to the automation of design standards. Knowledge-based expert systems have become a powerful tool in tackling domains like design where some of the problem-solving knowledge is diverse and ill-structured. Using an expert system tool, a standard can be represented and processed independent of a CAD application program. Two prototype standards processing systems utilizing the production system approach have been constructed and are presented herein. Although the obvious direct translation casting the provisions of a standard as rules in a production system has its advantages, a more generic and flexible representation scheme is proposed herein. The approach advocated in this paper is to represent standards as databases of facts which can be readily and generically processed by an expert system. The database representation is derived from a unified view of standards obtained by using the standards modeling tools proposed by previous researchers in this field during the past decade. Building on this existing technology resulted in a knowledge- based standards processing architecture which is generic, modular, and flexible. An implementation of this architecture is presented and described
keywords	knowledge base, standards, expert systems, civil engineering
series	CADline
last changed	2003/06/02 13:58

_id	cd8d
authors	Herbert, Daniel M.
year	1987
title	Study Drawings in Architectural Design: Applications for CAD Systems
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 157-168
doi	https://doi.org/10.52842/conf.acadia.1987.157
summary	To guide their future development, research and teaching in computer-aided design must look beyond the technical capabilities of computer systems to establish a theoretical foundation based on known processes in design. This paper suggests that such a theoretical foundation can be derived by analyzing architectural study drawings -- defined as the rough drawings that architects make in the exploratory stages of design -- to determine their epistemelogical properties. The analysis brings forward concepts from a number of disciplines related to the structure of human knowledge to identify five properties of study drawings. Based on these properties, the paper proposes strategies for application to the next generation of research and teaching in CAD systems.
series	ACADIA
last changed	2022/06/07 07:49

_id	e26f
authors	Kalay, Y. (ed.)
year	1987
title	Computability of Design
source	New York: Wiley & Sons
summary	Computer-aided design (CAD) has promised to transform the art and science of architectural design. Yet, despite some significant achievements in the past 3 decades, it has so far failed to do so. This stimulating volume, derived from a symposium held at SUNY, Buffalo in December 1986, explores the reasons why design is so difficult to support by computational means, and what can be done to alleviate this difficulty. Written by an interdisciplinary panel of experts, it presents a varied and comprehensive view of the ways creative design processes can be modelled. The contributors do not all reach the same conclusions, which makes this book lively reading. Topics are arranged into four parts: constructing models of the design process, the computational representation of design knowledge (including spatial information and implicit design intent), methods for computing the design process as a whole (including mathematical programming, expert systems, and shape grammars), and the integration of CAD with traditional design practices.
series	other
last changed	2003/04/23 15:14

_id	afd5
authors	Jog, Bharati
year	1987
title	An Interface Between CAD and Energy Analysis System
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 87-94
doi	https://doi.org/10.52842/conf.acadia.1987.087
summary	During the architectural design process it is helpful to get the energy analysis at various steps. Using the knowledge obtained from energy analysis programs, a design can be improved during the next step. Today Computer-Aided Drafting packages are popular as drafting tools in the architecture profession and schools. Many software packages for energy analysis are also available. To promote such analytical design process, there is a need to develop interfaces between energy analysis systems and Computer- Aided Drafting packages to get the energy analysis using the drawing files. This paper describes the use of the interface between Computer-Aided Drafting system and energy analysis program as an analytical tool in the Computer-Aided Design process. Then it presents an interface developed between AutoCAD, a popular Computer-Aided Drafting tool, and CALPAS3, an energy analysis program.
series	ACADIA
last changed	2022/06/07 07:52

_id	43a9
authors	Goldman, Glenn and Zdepski, Stephen
year	1987
title	Form, Color & Movement
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 39-50
doi	https://doi.org/10.52842/conf.acadia.1987.039
summary	Computer generated three dimensional architectural modeling is a fundamental transformation of the traditional architectural design process. Viewing a three dimensional computer model from many vantage points and through animation sequences, presents buildings and their surrounding environments as a sequence of spaces and events, rather than as static objects or graphic abstractions. Three dimensional modeling at the earliest stages of design tends to increase the spatial and formal properties of early building design studies, and diminishes the dominance of plan as the form giver. The following paper is based upon the work of second, third and fifth year architectural students who have engaged in architectural design through the use of microcomputer graphics. In each case they entered the architectural studio with virtually no computer experience. Although the assigned architectural projects were identical to those of other "conventional" architectural studios, their design work was accomplished, almost solely, using four different types of graphic software: Computer-Aided Drafting, 3-Dimensional Modeling, Painting and Animation programs. Information presented is based upon student surveys, semester logs, interviews, impressions of external design critics, and the comparison of computer based and conventional studio final presentations.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	404e
authors	Oksala , T.
year	1988
title	Logical Models for Rule-based CAAD
source	CAAD futures ‘87 [Conference Proceedings / ISBN 0-444-42916-6] Eindhoven (The Netherlands), 20-22 May 1987, pp. 107-116
summary	The aim of this paper is to present the basic results of a theoretic approach to represent architectural individual forms in CAD systems. From the point of view of design methodology and problem solving these descriptions might be conceived' as parts of possible environments satisfying the laws of some design theory in logical sense. This paper describes results in a series of logical studies towards rule and knowledge based systems for design automation. The effective use of programming languages and computers as design aids in architecture presupposes certain capabilities to articulate built environment logically. The use of graphic languages in the description of environmental items e.g. buildings might be theoretically mastered by formal production systems including linguistic, geometric, and spatio-material generation. The combination of the power of formal mechanisms and logical individual calculus offers suitable framework to generate arbitrary e.g. free spatial compositions as types or unique solutions. In this frame it is natural to represent in a coherent way very complex hierarchical parsing of buildings in explicit form as needed in computer implementations. In order to simulate real design work the individual configurations of possible built forms should be designed to satisfy known rules. In the preliminary stage partial solutions to design problems may be discussed in mathematical terms using frameworks like lattices, graphs, or group theoretical considerations of structural, functional, and visual organization of buildings. The capability to produce mathematically sophisticated geometric structures allows us to generalize the approach further. The theoretical design knowhow in architecture can be partly translated in to some logic and represented in a knowledge base. These rules are used as selection criteria for geometric design candidates in the sense of logical model theory and mathematical optimization. The economy of the system can be developed by using suitable conduct mechanisms familiar e.g. from logic programming. The semantics of logic offers a frame to consider computer assisted and formal generation in design. A number of semantic and pragmatic problems, however, remain to be solved. In any case conceptual analyses based on logic are applicable in order to rationally reconstruct architectural goals contributing to the quality of environmental design, which should be the main goal in the development of design systems in near future.
series	CAAD Futures
last changed	1999/04/03 17:58

_id	8a38
authors	Rasdorf, William J. and Parks, Linda M.
year	1987
title	Natural Language Prototypes for Analyzing Design Standards
source	Southampton, U.K: Computational Mechanics Publications, 1987. pp. 147-160
summary	CADLINE has abstract only. This paper addresses the use of natural language processing for acquiring, processing, and representing knowledge from design standards. A standard is a set of provisions providing principles, models, rules, limits, and particulars that are established by some authority for some purpose. In their textual form as written documents, design standards cannot directly be used in computer-aided design (CAD) systems. This paper demonstrates how standards can be transformed, using natural language processing techniques, from their textual form to alternative representations that more readily lend themselves to use in computer-aided design systems, supporting a variety of design applications. The language being transformed is the Building Officials and Code Administrators Building Code, one set of requirements that govern the design of buildings. Prototype computer subsystems have been developed that transform natural language sentences to case-grammar format and finally to subject-relationship- object triplets. The three prototypes that achieve these transformations are described: a parser, a semantic analyzer, and a query system. During one processing cycle, the system identifies that data items in a provision and the relationships between the data items. It also interacts with the user to add new data items to its knowledge bases, to verify data items found, and to add to its vocabulary. Alternatively, it responds to natural-language questions about the contents of the standard by identifying the relevant provisions within the standards. Processing formal documents requires knowledge about vocabulary, word-order, time, semantics, reference, and discourse. Despite the relative clarity of formal writing as it occurs in standards, the difficulties of implied responsibility, multiple meanings, and implied data items remain. A long-term research program at North Carolina State University has been defined that builds on these prototypes to further investigate knowledge acquisition and representation for standards
keywords	design, standards, analysis, AI, natural languages
series	CADline
last changed	2003/06/02 13:58

_id	8eb5
authors	Gero, John S. (Conference Chairman and Editor)
year	1987
title	Expert Systems in Computer-Aided Design
source	IFIP WG 5.2 Working Conference on Expert Systems in Computer-Aided Design. proceedings. 1987. 533 p. : ill. Amsterdam: North-Holland, 1987. Also published as a book by North Holland (Amsterdam, 1987)
summary	The aim of the Expert Systems in Computer-Aided Design conference was to provide a forum for the exchange of ideas and experiences related to expert systems in computer-aided design, to present and explore the state-of-the-art of expert systems in computer-aided design, to delineate future directions in both research and practice and to promote further development. Seventeen of the nineteen papers accepted were presented with each presentation followed by a round table discussion. The discussion was taped, transcribed and edited and forms part of this volume. The authors came from seven countries, whilst the attendees represented some thirteen nationalities. There is an implicit structure in the ordering of the papers, commencing with system architectures, representation tools through applications to specific design concerns. These papers demonstrate the wide variety of knowledge engineering tools needed in computer-aided design. It is interesting to observe the progression over these three conferences in the ratio of computer scientists to design researchers amongst the authors. The balance over the period has swung from a predominance of computer scientists to a predominance of design researchers. We are beginning to see knowledge engineering development driven by designers' needs
keywords	CAD, expert systems, AI, design
series	CADline
email
last changed	2003/06/02 13:58

_id	e290
authors	Kalay, Yehuda E.
year	1987
title	Worldview : An Integrated Geometric Modeling/Drafting System
source	IEEE Computer Graphics and Applications. February, 1987. vol. 7: pp. 36-46 : ill. (some col.). includes bibliography
summary	Worldview is a computer-aided architectural and engineering design system that combines the power of geometric modeling utilities with the intuitive design and communication capabilities of drafting utilities. This article describes the basic design concepts and implementation of the system, achieved by representing the designed artifact nonredundantly in a three-dimensional 'world' and manipulating it through multiple two-dimensional 'views.' The world consists of a collection of shapes that store all the formative information pertinent to the designed artifact, while the views consist of images of selected shapes, generated through particular two-way mapping transforms. Several views that depict the same set of shapes through different transforms can be displayed simultaneously, using multiple, dynamic, user- defined windows, thereby enabling addressability of points in the 3D world. Views also include such design and communication aids as dimension lines, construction lines, annotations, and graphic symbols to enhance the visual content of the images without encumbering the representation of the shapes themselves. Modifications applied to the shapes through any view are immediately apparent in all other views in which the shapes are imaged. The shapes are represented by a data structure based on the Hybrid Edge data model, which facilitates the integration of points, lines, surfaces, and volumetric bodies into one formative hierarchy. The integration of drafting and modeling simplifies the use of powerful modeling utilities by designers, facilitates the communication of the designed artifact, and enhances the integrity of the design as a whole
keywords	drafting, systems, geometric modeling, representation, user interface, computer graphics, CAD, architecture, engineering
series	CADline
email
last changed	2003/06/02 10:24

_id	ddss9846
id	ddss9846
authors	Rigatti, Decio
year	1998
title	Rubem Berta Housing Estate: Order and Structure, Designand Use
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The main goal of this paper is to investigate, through some space configurational based tools, a quite common phenomenon found in many different locations in Brazil, concerning the process of urban changes individually introduced by dwellers of public housing estates. A significant number of housing estates, particularly those designed according to rationalist concepts, seem to be unable to support space related social requirements and are then widely transformed when compared to the original layouts. Beyond the quantitative features, the morphological changes that take place in those housing estates mean a fundamental new approach to understand how completely new urban structures can arisefrom the space produced by a comprehensive urban design, took as a starting point for the transformations made by the dwellers of those settlements. As a case study is analysed the Rubem Berta Housing Estate which was built in Porto Alegre/RS, Brazil, for 20,000 people in the late 70’s. Since the begining of its occupation in 1986 and the invasion that took place in 1987, the urban transformations there have never stopped. It’s possible to realize that the dwellers individually use some constant physical rules to define the new settlement which are very similar within the estate itself and, at the same time, very similar to those found in other transformed housing estates of this sort. The physical rules introduced change the features of the entire settlement in two different levels: a) locally, through the transformations introduced in order to solve individual needs; b) globally, the local rules of physical transformations produce a new overall structure for the whole urban complex. The knowledge of this process makes it possible to bring to the surface of architectural theory some generic configurational codes that can be used as a tool for designing public housing estates in Brazil.
series	DDSS
last changed	2003/08/07 16:36

_id	ce3b
authors	Mitchell, J.R. and Radford, Antony D.
year	1987
title	EAVE, A Generative Expert System for Detailing
source	Environment and Planning B. 1987. vol. 14: pp. 281-292
summary	Grammars of shapes and designs are rule-based models for the generation of members of a class of designs. The applicability of the formalism as a basis for generative expert systems for construction details in computer-aided design is discussed. A demonstration system is presented
keywords	applications, automation, synthesis, shape grammars, CAD, expert systems
series	CADline
last changed	2003/06/02 14:41

_id	eb5f
authors	Al-Sallal, Khaled A. and Degelman, Larry 0.
year	1994
title	A Hypermedia Model for Supporting Energy Design in Buildings
source	Reconnecting [ACADIA Conference Proceedings / ISBN 1-880250-03-9] Washington University (Saint Louis / USA) 1994, pp. 39-49
doi	https://doi.org/10.52842/conf.acadia.1994.039
summary	Several studies have discussed the limitations of the available CAAD tools and have proposed solutions [Brown and Novitski 1987, Brown 1990, Degelman and Kim 1988, Schuman et al 1988]. The lack of integration between the different tasks that these programs address and the design process is a major problem. Schuman et al [1988] argued that in architectural design many issues must be considered simultaneously before the synthesis of a final product can take place. Studies by Brown and Novitski [1987] and Brown [1990] discussed the difficulties involved with integrating technical considerations in the creative architectural process. One aspect of the problem is the neglect of technical factors during the initial phase of the design that, as the authors argued, results from changing the work environment and the laborious nature of the design process. Many of the current programs require the user to input a great deal of numerical values that are needed for the energy analysis. Although there are some programs that attempt to assist the user by setting default values, these programs distract the user with their extensive arrays of data. The appropriate design tool is the one that helps the user to easily view the principal components of the building design and specify their behaviors and interactions. Data abstraction and information parsimony are the key concepts in developing a successful design tool. Three different approaches for developing an appropriate CAAD tool were found in the literature. Although there are several similarities among them, each is unique in solving certain aspects of the problem. Brown and Novitski [1987] emphasize the learning factor of the tool as well as its highly graphical user interface. Degelman and Kim [1988] emphasize knowledge acquisition and the provision of simulation modules. The Windows and Daylighting Group of Lawrence Berkeley Laboratory (LBL) emphasizes the dynamic structuring of information, the intelligent linking of data, the integrity of the different issues of design and the design process, and the extensive use of images [Schuman et al 19881, these attributes incidentally define the word hypermedia. The LBL model, which uses hypermedia, seems to be the more promising direction for this type of research. However, there is still a need to establish a new model that integrates all aspects of the problem. The areas in which the present research departs from the LBL model can be listed as follows: it acknowledges the necessity of regarding the user as the center of the CAAD tool design, it develops a model that is based on one of the high level theories of human-computer interaction, and it develops a prototype tool that conforms to the model.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	ea89
authors	Brown, John L.
year	1987
title	Integrating Computers into the Design Studio - A Critical Evaluation
source	Integrating Computers into the Architectural Curriculum [ACADIA Conference Proceedings] Raleigh (North Carolina / USA) 1987, pp. 29-38
doi	https://doi.org/10.52842/conf.acadia.1987.029
summary	This paper presents a critical evaluation of two years of experience in using computer aided design as the primary graphic tool in an architectural design studio. In addition to significant benefits being realized, it was found that in a number of circumstances the graphic tool seemed to place unnecessary or inappropriate constraints on the designer. A critical examination of this tendency revealed that there may be a discrepancy between the theoretical framework in which computer aided design systems are developed and used, and the conceptual framework of contemporary architectural thought. These issues arising from the studio experience, are discussed and placed within the context of current theoretical concerns in architecture.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	caadria2011_061
id	caadria2011_061
authors	Celani, Gabriela; José P. Duarte and Carlos V. Vaz
year	2011
title	The gardens revisited: The link between technology, meaning and logic?
source	Proceedings of the 16th International Conference on Computer Aided Architectural Design Research in Asia / The University of Newcastle, Australia 27-29 April 2011, pp. 643-652
doi	https://doi.org/10.52842/conf.caadria.2011.643
summary	The objective of this paper is to compare the computational concepts present in three books published by Mitchell between 1987 and 1990: The art of computer-graphics programming (1987), which has Robin Liggett and Thomas Kvan as co-authors, The logic of architecture (1990), probably his most influential work, and The poetics of gardens (1988), which has Charles Moore and William Turnbull as coauthors. By looking at the concepts that are presented in the three books and establishing a comparison between them, we expect to show that The poetics of Gardens should not be seen as a detour from Mitchell´s line of research, but rather as a key piece for understanding the relationship between technology, meaning and logic in his very coherent body of work.
keywords	Computational design concepts; technology; meaning; logic
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	ascaad2006_paper20
id	ascaad2006_paper20
authors	Chougui, Ali
year	2006
title	The Digital Design Process: reflections on architectural design positions on complexity and CAAD
source	Computing in Architecture / Re-Thinking the Discourse: The Second International Conference of the Arab Society for Computer Aided Architectural Design (ASCAAD 2006), 25-27 April 2006, Sharjah, United Arab Emirates
summary	These instructions are intended to guide contributors to the Second Architecture is presently engaged in an impatient search for solutions to critical questions about the nature and the identity of the discipline, and digital technology is a key agent for prevailing innovations in architectural design. The problem of complexity underlies all design problems. With the advent of CAD however, Architect’s ability to truly represent complexity has increased considerably. Another source that provides information about dealing with complexity is architectural theory. As Rowe (1987) states, architectural theory constitutes “a corpus of principles that are agreed upon and therefore worthy of emulation”. Architectural theory often is a mixed reflection on the nature of architectural design, design processes, made in descriptive and prescriptive terms (see Kruft 1985). Complexity is obviously not a new issue in architectural theory. Since it is an inherent characteristic of design problems, it has been dealt with in many different ways throughout history. Contemporary architects incorporate the computer in their design process. They produce architecture that is generated by the use of particle systems, simulation software, animation software, but also the more standard modelling tools. The architects reflect on the impact of the computer in their theories, and display changes in style by using information modelling techniques that have become versatile enough to encompass the complexity of information in the architectural design process. In this way, architectural style and theory can provide directions to further develop CAD. Most notable is the acceptance of complexity as a given fact, not as a phenomenon to oppose in systems of organization, but as a structuring principle to begin with. No matter what information modelling paradigm is used, complex and huge amounts of information need to be processed by designers. A key aspect in the combination of CAD, complexity, and architectural design is the role of the design representation. The way the design is presented and perceived during the design process is instrumental to understanding the design task. More architects are trying to reformulate this working of the representation. The intention of this paper is to present and discuss the current state of the art in architectural design positions on complexity and CAAD, and to reflect in particular on the role of digital design representations in this discussion. We also try to investigate how complexity can be dealt with, by looking at architects, in particular their styles and theories. The way architects use digital media and graphic representations can be informative how units of information can be formed and used in the design process. A case study is a concrete architect’s design processes such as Peter Eisenman Rem Koolhaas, van Berkel, Lynn, and Franke gehry, who embrace complexity and make it a focus point in their design, Rather than viewing it as problematic issue, by using computer as an indispensable instrument in their approaches.
series	ASCAAD
email
last changed	2007/04/08 19:47

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