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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	fda4
authors	Jalkanen, Janne
year	2000
title	Building a spatially immersive display - HUTCAVE
source	Helsinki University of Technology, Espoo, Finland
summary	A spatially immersive display is a display that surrounds the user, thus removing or alleviating many disadvantages the common virtual reality systems, such as head-mounted displays have. The most common example of these spatially immersive displays is the CAVE, "CAVE Automatic Virtual Environment", first built at University of Illinois, in 1993. It combines a large field-of-view with high-resolution images and a high frame refresh rate. In this work, the current Virtual Reality (VR) and Virtual Environment (VE) systems are examined, and then the CAVE construction is presented. Principles of stereo vision are explained and current methods of obtaining both autostereoscopic and stereopsis-based vision are reviewed. Aspects of different projection methods, screens, mirrors, projectors, tracking equipment, and computing systems are examined. Also, recent work in CAVE audio, so far neglected in research, is presented. Some of the mathematics is also explained, since in most CAVE-systems some sort of optical folding is necessary. Two cases of CAVE construction are presented, both at the Helsinki University of Technology. The first is a single-wall installation built as a temporary system, and the second is a four-sided CAVE at a new location, superseding the temporary installation. Finally the conclusions are presented, both from the process management point of view, and from the technical point of view, examining the good and bad points of the chosen solutions.
series	thesis:MSc
last changed	2003/02/12 22:37

_id	cef3
authors	Bridges, Alan H.
year	1992
title	Computing and Problem Based Learning at Delft University of Technology Faculty of Architecture
source	CAAD Instruction: The New Teaching of an Architect? [eCAADe Conference Proceedings] Barcelona (Spain) 12-14 November 1992, pp. 289-294
doi	https://doi.org/10.52842/conf.ecaade.1992.289
summary	Delft University of Technology, founded in 1842, is the oldest and largest technical university in the Netherlands. It provides education for more than 13,000 students in fifteen main subject areas. The Faculty of Architecture, Housing, Urban Design and Planning is one of the largest faculties of the DUT with some 2000 students and over 500 staff members. The course of study takes four academic years: a first year (Propaedeuse) and a further three years (Doctoraal) leading to the "ingenieur" qualification. The basic course material is delivered in the first two years and is taken by all students. The third and fourth years consist of a smaller number of compulsory subjects in each of the department's specialist areas together with a wide range of option choices. The five main subject areas the students may choose from for their specialisation are Architecture, Building and Project Management, Building Technology, Urban Design and Planning, and Housing. The curriculum of the Faculty has been radically revised over the last two years and is now based on the concept of "Problem-Based Learning". The subject matter taught is divided thematically into specific issues that are taught in six week blocks. The vehicles for these blocks are specially selected and adapted case studies prepared by teams of staff members. These provide a focus for integrating specialist subjects around a studio based design theme. In the case of second year this studio is largely computer-based: many drawings are produced by computer and several specially written computer applications are used in association with the specialist inputs. This paper describes the "block structure" used in second year, giving examples of the special computer programs used, but also raises a number of broader educational issues. Introduction of the block system arose as a method of curriculum integration in response to difficulties emerging from the independent functioning of strong discipline areas in the traditional work groups. The need for a greater level of selfdirected learning was recognised as opposed to the "passive information model" of student learning in which the students are seen as empty vessels to be filled with knowledge - which they are then usually unable to apply in design related contexts in the studio. Furthermore, the value of electives had been questioned: whilst enabling some diversity of choice, they may also be seen as diverting attention and resources from the real problems of teaching architecture.
series	eCAADe
email
last changed	2022/06/07 07:54

_id	9384
authors	Burry, M., Datta, S. and Anson, S.
year	2000
title	Introductory Computer Programming as a Means for Extending Spatial and Temporal Understanding
source	Eternity, Infinity and Virtuality in Architecture [Proceedings of the 22nd Annual Conference of the Association for Computer-Aided Design in Architecture / 1-880250-09-8] Washington D.C. 19-22 October 2000, pp. 129-135
doi	https://doi.org/10.52842/conf.acadia.2000.129
summary	Should computer programming be taught within schools of architecture? Incorporating even low-level computer programming within architectural education curricula is a matter of debate but we have found it useful to do so for two reasons: as an introduction or at least a consolidation of the realm of descriptive geometry and in providing an environment for experimenting in morphological time-based change. Mathematics and descriptive geometry formed a significant proportion of architectural education until the end of the 19th century. This proportion has declined in contemporary curricula, possibly at some cost for despite major advances in automated manufacture, Cartesian measurement is still the principal ‘language’ with which to describe building for construction purposes. When computer programming is used as a platform for instruction in logic and spatial representation, the waning interest in mathematics as a basis for spatial description can be readdressed using a left-field approach. Students gain insights into topology, Cartesian space and morphology through programmatic form finding, as opposed to through direct manipulation. In this context, it matters to the architect-programmer how the program operates more than what it does. This paper describes an assignment where students are given a figurative conceptual space comprising the three Cartesian axes with a cube at its centre. Six Phileban solids mark the Cartesian axial limits to the space. Any point in this space represents a hybrid of one, two or three transformations from the central cube towards the various Phileban solids. Students are asked to predict the topological and morphological outcomes of the operations. Through programming, they become aware of morphogenesis and hybridisation. Here we articulate the hypothesis above and report on the outcome from a student group, whose work reveals wider learning opportunities for architecture students in computer programming than conventionally assumed.
series	ACADIA
email
last changed	2022/06/07 07:54

_id	avocaad_2001_22
id	avocaad_2001_22
authors	Jos van Leeuwen, Joran Jessurun
year	2001
title	XML for Flexibility an Extensibility of Design Information Models
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	The VR-DIS research programme aims at the development of a Virtual Reality – Design Information System. This is a design and decision support system for collaborative design that provides a VR interface for the interaction with both the geometric representation of a design and the non-geometric information concerning the design throughout the design process. The major part of the research programme focuses on early stages of design. The programme is carried out by a large number of researchers from a variety of disciplines in the domain of construction and architecture, including architectural design, building physics, structural design, construction management, etc.Management of design information is at the core of this design and decision support system. Much effort in the development of the system has been and still is dedicated to the underlying theory for information management and its implementation in an Application Programming Interface (API) that the various modules of the system use. The theory is based on a so-called Feature-based modelling approach and is described in the PhD thesis by [first author, 1999] and in [first author et al., 2000a]. This information modelling approach provides three major capabilities: (1) it allows for extensibility of conceptual schemas, which is used to enable a designer to define new typologies to model with; (2) it supports sharing of conceptual schemas, called type-libraries; and (3) it provides a high level of flexibility that offers the designer the opportunity to easily reuse design information and to model information constructs that are not foreseen in any existing typologies. The latter aspect involves the capability to expand information entities in a model with relationships and properties that are not typologically defined but applicable to a particular design situation only; this helps the designer to represent the actual design concepts more accurately.The functional design of the information modelling system is based on a three-layered framework. In the bottom layer, the actual design data is stored in so-called Feature Instances. The middle layer defines the typologies of these instances in so-called Feature Types. The top layer is called the meta-layer because it provides the class definitions for both the Types layer and the Instances layer; both Feature Types and Feature Instances are objects of the classes defined in the top layer. This top layer ensures that types can be defined on the fly and that instances can be created from these types, as well as expanded with non-typological properties and relationships while still conforming to the information structures laid out in the meta-layer.The VR-DIS system consists of a growing number of modules for different kinds of functionality in relation with the design task. These modules access the design information through the API that implements the meta-layer of the framework. This API has previously been implemented using an Object-Oriented Database (OODB), but this implementation had a number of disadvantages. The dependency of the OODB, a commercial software library, was considered the most problematic. Not only are licenses of the OODB library rather expensive, also the fact that this library is not common technology that can easily be shared among a wide range of applications, including existing applications, reduces its suitability for a system with the aforementioned specifications. In addition, the OODB approach required a relatively large effort to implement the desired functionality. It lacked adequate support to generate unique identifications for worldwide information sources that were understandable for human interpretation. This strongly limited the capabilities of the system to share conceptual schemas.The approach that is currently being implemented for the core of the VR-DIS system is based on eXtensible Markup Language (XML). Rather than implementing the meta-layer of the framework into classes of Feature Types and Feature Instances, this level of meta-definitions is provided in a document type definition (DTD). The DTD is complemented with a set of rules that are implemented into a parser API, based on the Document Object Model (DOM). The advantages of the XML approach for the modelling framework are immediate. Type-libraries distributed through Internet are now supported through the mechanisms of namespaces and XLink. The implementation of the API is no longer dependent of a particular database system. This provides much more flexibility in the implementation of the various modules of the VR-DIS system. Being based on the (supposed to become) standard of XML the implementation is much more versatile in its future usage, specifically in a distributed, Internet-based environment.These immediate advantages of the XML approach opened the door to a wide range of applications that are and will be developed on top of the VR-DIS core. Examples of these are the VR-based 3D sketching module [VR-DIS ref., 2000]; the VR-based information-modelling tool that allows the management and manipulation of information models for design in a VR environment [VR-DIS ref., 2000]; and a design-knowledge capturing module that is now under development [first author et al., 2000a and 2000b]. The latter module aims to assist the designer in the recognition and utilisation of existing and new typologies in a design situation. The replacement of the OODB implementation of the API by the XML implementation enables these modules to use distributed Feature databases through Internet, without many changes to their own code, and without the loss of the flexibility and extensibility of conceptual schemas that are implemented as part of the API. Research in the near future will result in Internet-based applications that support designers in the utilisation of distributed libraries of product-information, design-knowledge, case-bases, etc.The paper roughly follows the outline of the abstract, starting with an introduction to the VR-DIS project, its objectives, and the developed theory of the Feature-modelling framework that forms the core of it. It briefly discusses the necessity of schema evolution, flexibility and extensibility of conceptual schemas, and how these capabilities have been addressed in the framework. The major part of the paper describes how the previously mentioned aspects of the framework are implemented in the XML-based approach, providing details on the so-called meta-layer, its definition in the DTD, and the parser rules that complement it. The impact of the XML approach on the functionality of the VR-DIS modules and the system as a whole is demonstrated by a discussion of these modules and scenarios of their usage for design tasks. The paper is concluded with an overview of future work on the sharing of Internet-based design information and design knowledge.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	30c8
authors	Koutamanis, A., Barendse, P.B74 and Kempenaar, J.W.
year	1999
title	Web-based CAAD Instruction: The Delft Experience
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 159-168
doi	https://doi.org/10.52842/conf.ecaade.1999.159
summary	In the early 1990s, the introduction of an extensive CAAD component in the compulsory curriculum of the Faculty of Architecture, Delft University of Technology, stimulated experimentation with computer-based instruction systems. The emergence of the World Wide Web presented new possibilities. Nevertheless, the reasons for investing in Web-based CAAD instruction were mostly pragmatic, i.e. a reaction to necessity, rather than an intention to explore, experiment and revolutionize. One of the problems addressed in our Web-based CAAD instruction is CAAD literacy. Help files and manuals that accompany software have proven to be unsuitable for introductory courses in design computing. This led to the development of a series of dynamic Web-based tutorials, in the form of interactive slide shows. The implementation of the tutorials is based on a cooperative framework that allows teachers and students to contribute at different levels of technical and methodical complexity. The use of the Web in CAAD education also stimulated a more active attitude among students. Despite the limited support and incentives offered by the Faculty, the Web-based CAAD courses became an invitation to intelligent and meaningful use of Web technologies by students for design presentation and communication. This is not only a useful addition to the opportunities offered by CAAD systems but also a prerequisite to new design communities.
keywords	WWW Technologies, Teaching
series	eCAADe
email
last changed	2022/06/07 07:51

_id	b34d
authors	Russell, P., Kohler, N., Forgber, U., Koch, V. and Rügemer, J.
year	1999
title	Interactive Representation of Architectural Design: The Virtual Design Studio as an Architectural Graphics Laboratory
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 459-465
doi	https://doi.org/10.52842/conf.ecaade.1999.459
summary	This paper introduces the Virtual Design Studio (VDS), an internet based design studio environment established by ifib. VDS transfers lessons learned through research projects in the field of Computer Supported Co-operative Work (CSCW) being carried out at ifib into design education. By training for interdisciplinary co-operation within the design process, the students will become better prepared for the flexibility and co-operability required in planning situations. Increasing the communication and co-operation in the planning process can be achieved through the implementation of IT based virtual workspaces. In the design studio setting, this is done through the use of available internet software and technologies. The methodology of the VDS is briefly described including specific assignments intended to focus student investigations into specific areas including the representation of their work using the world wide web. The pedagogical expectations are discussed and anecdotal evidence precedes an general evaluation of the teaching method. The authors postulate that one of the unintended by-products of the studio is the evolution of an effective use of interactivity in the presentation of design concepts, ideas and solutions. A handful of student work is presented to describe the different approaches taken in using the world wide web (WWW) to display project work. A description of the local evolution (VDS specific) of graphical methods and technologies is followed by a comparison with those used in traditional settings. Representation is discussed with focus on the ability of the WWW to replace, augment or corrupt other methods of presentation. The interactive nature of web based presentations induces alterations to the narration of architectural work and can enhance the spatial perception of design space. Space Perception can be enabled through geometrically true VRML representations, the inclusion of auditory sensations, the abstraction of representation through the use of advertising techniques as well as the introduction of non-linear narrative concepts. Examples used by students are shown. A critical assessment of these new representational methods and the place of current new media within the context of architectural representation is discussed.
keywords	Virtual Design Studio, Architectural Graphics, Teaching
series	eCAADe
email
last changed	2022/06/07 07:56

_id	65f7
authors	Rügemer, Jörg and Russell, Peter
year	2000
title	Promise and Reality: The impact of the Virtual Design Studio on the Design and Learning Process in the Architectural Education
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 41-44
doi	https://doi.org/10.52842/conf.ecaade.2000.041
summary	In step with the popular trend of including virtual working methods and tools in the process of teaching, the Virtual Design Studio (VDS) has been developed by the Institute for Industrial Building Production (ifib), at the University of Karlsruhe over the past three years. Alongside the technical aspects of such a studio, the challenge persisted to incorporate computer based tools into the architectural design and planning process with the goal of enhancing the relationship between all participants. The VDS is being further developed and refined, experiencing regular changes in its organization and teaching methods. With the establishment of the Virtual Upperrhine University of Architecture (VuuA) and the introduction of the Virtual Design Studio into the curriculum of the Institute for Architectural Presentation and CAD (adai), BTU Cottbus, the VDS extended beyond the borders of a single architectural school, aiming towards a wide acceptance and use within architectural education institutions.
keywords	Virtual Design Studio, Education, Interactive Design Development, Team Processes
series	eCAADe
email
more	http://www.ifib.uni-karlsruhe.de/
last changed	2022/06/07 07:56

_id	diss_sola
id	diss_sola
authors	Sola-Morales, Pau
year	2000
title	Representation in Architecture: A Data Model for Computer-Aided Architectural Design
source	DDes Thesis, Harvard Design School, Cambridge, MA
summary	Traditional representation systems – including technical drawings, perspectives, models and photography – have historically been used by architects to communicate projectual ideas to other agents in the process, as well to communicate ideas to themselves and recording them for future reference. The increasing complexity of the projects, involving more agents in ever more distant locations; the need for a greater semantic richness to express all the subtleties of the technical, cost and styling details; and -- most importantly – the introduction of computers in every day practice, which enable powerful data generation and manipulation; all these factors together demand for a new representation system adapted to the new digital medium. Yet, traditional CAAD software packages do not offer a solution to any of these problems, for their data model is too simplified to model complex projects and ideas, and are based on geometrical representations of the built environment. This dissertation addresses the issue of computer representation of architecture, and tries to refocus the discussion from a “geometric representation of objects” to a “representation of relationships among objects.” After studying the nature of design, it is observed that objects in the built environment can be represented as patterns of relationships. Based on the object-oriented data model (OODM), which can capture such relationships, the research proposes a new data model and a new set of abstractions of architectural elements that represent the patterns of relationships among them. The resulting representations are networks of design concepts and intentions, hypertext-like structures conveying all the semantic richness of the architectural project, containing qualitative as well as quantitative information. It is analogous to a “digital writing” or “encoding” of architecture. Being stored in an OO, centralized, concurrent database, these object models can be shared and exchanged among design professionals, adding up to a universal computer-readable design representation system.
series	thesis:PhD
last changed	2005/09/09 12:58

_id	456a
authors	Alvarado, R.G., Parra, J.C., Vergara, R.L. and Chateau, H.B.
year	2000
title	Architectural References to Virtual Environments Design
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 151-155
doi	https://doi.org/10.52842/conf.ecaade.2000.151
summary	Based on a comparison between the perception of digital and real construction, the development of virtual systems and the review of additional sources, this paper states some differences between the design of virtual environments and architectural spaces. Virtual-reality technologies provide advanced capabilities to simulate real situations, and also to create digital worlds not referred to physical places, such as imaginary landscapes or environments devoted to electronic activities, like entertainment, learning or commerce. Some on-line services already use 3D-stages, resembling building halls and domestic objects, and several authors have mentioned virtual modeling as a job opportunity to architects. But it will argue in this paper that the design of those environments should consider their own digital characteristics. Besides, the use of virtual installations on networks impells a convergence with global media, like Internet or TV. Virtual environments can be a 3Devolution of communicational technologies, which have an increasing participation in culture, reaching a closer relationship to contemporary architecture.
keywords	Virtual Environments, Spatial Perception, Design Methodology
series	eCAADe
email
more	http://www.uni-weimar.de/ecaade/
last changed	2022/06/07 07:54

_id	1f5c
authors	Beesley, Philip and Seebohm, Thomas
year	2000
title	Digital Tectonic Design
source	Promise and Reality: State of the Art versus State of Practice in Computing for the Design and Planning Process [18th eCAADe Conference Proceedings / ISBN 0-9523687-6-5] Weimar (Germany) 22-24 June 2000, pp. 287-290
doi	https://doi.org/10.52842/conf.ecaade.2000.287
summary	Digital tectonic design is a fresh approach to architectural design methodology. Tectonics means a focus on assemblies of construction elements. Digital tectonics is an evolving methodology that integrates use of design software with traditional construction methods. We see digital tectonic design as a systematic use of geometric and spatial ordinances, used in combination with details and components directly related to contemporary construction. The current approach will, we hope, lead to an architectural curriculum based on generative form making where the computer can be used to produce systems of forms algorithmically. Digital design has tended to remain abstract, emphasizing visual and spatial arrangements often at the expense of materials and construction. Our pursuit is translation of these methods into more fully realized physical qualities. This method offers a rigorous approach based on close study of geometry and building construction elements. Giving a context for this approach, historical examples employing systematic tectonic design are explored in this paper. The underlying geometric ordinance systems and the highly tuned relationships between the details in these examples offer design vocabularies for use within the studio curriculum. The paper concludes with a detailed example from a recent studio project demonstrating particular qualities developed within the method. The method involves a wide range of scales, relating large-scale gestural and schematic studies to detailed assembly systems. Designing in this way means developing geometric strategies and, in parallel, producing detailed symbols or objects to be inserted. These details are assembled into a variety of arrays and groups. The approach is analogous to computer-aided designÕs tradition of shape grammars in which systems of spatial relationships are used to control the insertion of shapes within a space. Using this approach, a three-dimensional representation of a building is iteratively refined until the final result is an integrated, systematically organized complex of symbols representing physical building components. The resulting complex offers substantial material qualities. Strategies of symbol insertions and hierarchical grouping of elements are familiar in digital design practice. However these strategies are usually used for automated production of preconceived designs. In contrast to thsse normal approaches this presentation focuses on emergent qualities produced directly by means of the complex arrays of symbol insertions. The rhyth
keywords	3D CAD Systems, Design Practice, 3D Design Strategies
series	eCAADe
email
more	http://www.uni-weimar.de/ecaade/
last changed	2022/06/07 07:54

_id	3e51
authors	Cerulli, C., Peng, C. and Lawson, B.
year	2001
title	Capturing Histories of Design Processes for Collaborative Building Design Development. Field Trial of the ADS Prototype
source	Proceedings of the Ninth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-7023-6] Eindhoven, 8-11 July 2001, pp. 427-437
summary	The ADS Project - Advanced Design Support for the Construction Design Process - builds on the technological results of the previous COMMIT Project to exploit and demonstrate the benefits of a CAD based Design Decision Support System. COMMIT provides a system for storing knowledge about knowledge within the design process. It records design decisions, the actors who take them and the roles they play when doing so. ADS links COMMIT to an existing object-oriented CAD system, MicroStation/J from Bentley Systems. The project focuses on tackling the problem of managing design information without intruding too much on the design process itself. It provides the possibility to effectively link design decisions back to requirements, to gather rationale information for later stages of the building lifecycle, and to gather knowledge of rationale for later projects. The system enables members of the project team, including clients and constructors, to browse and search the recorded project history of decision making both during and after design development. ADS aims to facilitate change towards a more collaborative process in construction design, to improve the effectiveness of decision-making throughout the construction project and to provide clients with the facility to relate design outcomes to design briefs across the whole building life cycle. In this paper we will describe the field trials of the ADS prototype carried out over a three-month period at the Building Design Partnership (BDP) Manchester office. The objective of these trials is to assess the extent, to which the approach underlying ADS enhances the design process, and to gather and document the views and experiences of practitioners. The ADS prototype was previously tested with historical data of real project (Peng, Cerulli et al. 2000). To gather more valuable knowledge about how a Decision Support System like ADS can be used in practice, the testing and evaluation will be extended to a real project, while it is still ongoing. The live case study will look at some phases of the design of a mixed residential and retail development in Leeds, UK, recording project information while it is created. The users’ feedback on the system usability will inform the continuous redevelopment process that will run in parallel to the live case study. The ADS and COMMIT Projects were both funded by EPSRC.
keywords	Design Rationale, Design Support Systems, Usability Evaluation
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	avocaad_2001_02
id	avocaad_2001_02
authors	Cheng-Yuan Lin, Yu-Tung Liu
year	2001
title	A digital Procedure of Building Construction: A practical project
source	AVOCAAD - ADDED VALUE OF COMPUTER AIDED ARCHITECTURAL DESIGN, Nys Koenraad, Provoost Tom, Verbeke Johan, Verleye Johan (Eds.), (2001) Hogeschool voor Wetenschap en Kunst - Departement Architectuur Sint-Lucas, Campus Brussel, ISBN 80-76101-05-1
summary	In earlier times in which computers have not yet been developed well, there has been some researches regarding representation using conventional media (Gombrich, 1960; Arnheim, 1970). For ancient architects, the design process was described abstractly by text (Hewitt, 1985; Cable, 1983); the process evolved from unselfconscious to conscious ways (Alexander, 1964). Till the appearance of 2D drawings, these drawings could only express abstract visual thinking and visually conceptualized vocabulary (Goldschmidt, 1999). Then with the massive use of physical models in the Renaissance, the form and space of architecture was given better precision (Millon, 1994). Researches continued their attempts to identify the nature of different design tools (Eastman and Fereshe, 1994). Simon (1981) figured out that human increasingly relies on other specialists, computational agents, and materials referred to augment their cognitive abilities. This discourse was verified by recent research on conception of design and the expression using digital technologies (McCullough, 1996; Perez-Gomez and Pelletier, 1997). While other design tools did not change as much as representation (Panofsky, 1991; Koch, 1997), the involvement of computers in conventional architecture design arouses a new design thinking of digital architecture (Liu, 1996; Krawczyk, 1997; Murray, 1997; Wertheim, 1999). The notion of the link between ideas and media is emphasized throughout various fields, such as architectural education (Radford, 2000), Internet, and restoration of historical architecture (Potier et al., 2000). Information technology is also an important tool for civil engineering projects (Choi and Ibbs, 1989). Compared with conventional design media, computers avoid some errors in the process (Zaera, 1997). However, most of the application of computers to construction is restricted to simulations in building process (Halpin, 1990). It is worth studying how to employ computer technology meaningfully to bring significant changes to concept stage during the process of building construction (Madazo, 2000; Dave, 2000) and communication (Haymaker, 2000).In architectural design, concept design was achieved through drawings and models (Mitchell, 1997), while the working drawings and even shop drawings were brewed and communicated through drawings only. However, the most effective method of shaping building elements is to build models by computer (Madrazo, 1999). With the trend of 3D visualization (Johnson and Clayton, 1998) and the difference of designing between the physical environment and virtual environment (Maher et al. 2000), we intend to study the possibilities of using digital models, in addition to drawings, as a critical media in the conceptual stage of building construction process in the near future (just as the critical role that physical models played in early design process in the Renaissance). This research is combined with two practical building projects, following the progress of construction by using digital models and animations to simulate the structural layouts of the projects. We also tried to solve the complicated and even conflicting problems in the detail and piping design process through an easily accessible and precise interface. An attempt was made to delineate the hierarchy of the elements in a single structural and constructional system, and the corresponding relations among the systems. Since building construction is often complicated and even conflicting, precision needed to complete the projects can not be based merely on 2D drawings with some imagination. The purpose of this paper is to describe all the related elements according to precision and correctness, to discuss every possibility of different thinking in design of electric-mechanical engineering, to receive feedback from the construction projects in the real world, and to compare the digital models with conventional drawings.Through the application of this research, the subtle relations between the conventional drawings and digital models can be used in the area of building construction. Moreover, a theoretical model and standard process is proposed by using conventional drawings, digital models and physical buildings. By introducing the intervention of digital media in design process of working drawings and shop drawings, there is an opportune chance to use the digital media as a prominent design tool. This study extends the use of digital model and animation from design process to construction process. However, the entire construction process involves various details and exceptions, which are not discussed in this paper. These limitations should be explored in future studies.
series	AVOCAAD
email
last changed	2005/09/09 10:48

_id	53c8
authors	Donath, Dirk and Lömker, Thorsten Michael
year	2000
title	Illusion, Frustration and Vision in Computer-Aided Project Planning: A Reflection and Outlook on the Use of Computing in Architecture
source	Eternity, Infinity and Virtuality in Architecture [Proceedings of the 22nd Annual Conference of the Association for Computer-Aided Design in Architecture / 1-880250-09-8] Washington D.C. 19-22 October 2000, pp. 3-9
doi	https://doi.org/10.52842/conf.acadia.2000.003
summary	This paper examines the progressive and pragmatic use of computers and CAAD systems in the architectural practice. With the aid of three scenarios, this paper will illustrate gainful implementation of computer aided project planning in architecture. The first scenario describes an actual situation of implementation and describes conceptual abortive developments in office organization as well as in software technology. Scenario two outlines the essential features of an integrated building design system and the efforts involved in its implementation in the architectural practice. It clearly defines preconditions for implementation and focuses on feasible concepts for the integration of different database management systems. A glance at paradigms of conceptual work currently under development will be taken. The third scenario deals with the structure and integration of innovative concepts and the responsibility the architect will bear with regard to necessary alterations in office and workgroup organization. A future-oriented building design system will be described that distinguishes itself from existing programs because of its modular, net-based structure. With reference to today’s situation in architectural offices and according to realizable improvements, this article will demonstrate courses for future IT-support on the basis of an ongoing research project. The presented project is part of the special research area 524 “Materials and Constructions for the Revitalization of Existing Buildings” which is funded by the Deutsche Forschungsgemeinschaft. It deals with the integration of various parties that are involved in the revitalization process of existing buildings as well as with the provision of adequate information within the planning process resting upon the survey of existing building substance. Additional concepts that might change the way an architect’s work is organized will also be presented. “Case-based-reasoning” methods will make informal knowledge available, leading to a digital memory of preservable solutions.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	349e
authors	Durmisevic, Sanja
year	2002
title	Perception Aspects in Underground Spaces using Intelligent Knowledge Modeling
source	Delft University of Technology
summary	The intensification, combination and transformation are main strategies for future spatial development of the Netherlands, which are stated in the Fifth Bill regarding Spatial Planning. These strategies indicate that in the future, space should be utilized in a more compact and more efficient way requiring, at the same time, re-evaluation of the existing built environment and finding ways to improve it. In this context, the concept of multiple space usage is accentuated, which would focus on intensive 4-dimensional spatial exploration. The underground space is acknowledged as an important part of multiple space usage. In the document 'Spatial Exploration 2000', the underground space is recognized by policy makers as an important new 'frontier' that could provide significant contribution to future spatial requirements.In a relatively short period, the underground space became an important research area. Although among specialists there is appreciation of what underground space could provide for densely populated urban areas, there are still reserved feelings by the public, which mostly relate to the poor quality of these spaces. Many realized underground projects, namely subways, resulted in poor user satisfaction. Today, there is still a significant knowledge gap related to perception of underground space. There is also a lack of detailed documentation on actual applications of the theories, followed by research results and applied techniques. This is the case in different areas of architectural design, but for underground spaces perhaps most evident due to their infancv role in general architectural practice. In order to create better designs, diverse aspects, which are very often of qualitative nature, should be considered in perspective with the final goal to improve quality and image of underground space. In the architectural design process, one has to establish certain relations among design information in advance, to make design backed by sound rationale. The main difficulty at this point is that such relationships may not be determined due to various reasons. One example may be the vagueness of the architectural design data due to linguistic qualities in them. Another, may be vaguely defined design qualities. In this work, the problem was not only the initial fuzziness of the information but also the desired relevancy determination among all pieces of information given. Presently, to determine the existence of such relevancy is more or less a matter of architectural subjective judgement rather than systematic, non-subjective decision-making based on an existing design. This implies that the invocation of certain tools dealing with fuzzy information is essential for enhanced design decisions. Efficient methods and tools to deal with qualitative, soft data are scarce, especially in the architectural domain. Traditionally well established methods, such as statistical analysis, have been used mainly for data analysis focused on similar types to the present research. These methods mainly fall into a category of pattern recognition. Statistical regression methods are the most common approaches towards this goal. One essential drawback of this method is the inability of dealing efficiently with non-linear data. With statistical analysis, the linear relationships are established by regression analysis where dealing with non-linearity is mostly evaded. Concerning the presence of multi-dimensional data sets, it is evident that the assumption of linear relationships among all pieces of information would be a gross approximation, which one has no basis to assume. A starting point in this research was that there maybe both linearity and non-linearity present in the data and therefore the appropriate methods should be used in order to deal with that non-linearity. Therefore, some other commensurate methods were adopted for knowledge modeling. In that respect, soft computing techniques proved to match the quality of the multi-dimensional data-set subject to analysis, which is deemed to be 'soft'. There is yet another reason why soft-computing techniques were applied, which is related to the automation of knowledge modeling. In this respect, traditional models such as Decision Support Systems and Expert Systems have drawbacks. One important drawback is that the development of these systems is a time-consuming process. The programming part, in which various deliberations are required to form a consistent if-then rule knowledge based system, is also a time-consuming activity. For these reasons, the methods and tools from other disciplines, which also deal with soft data, should be integrated into architectural design. With fuzzy logic, the imprecision of data can be dealt with in a similar way to how humans do it. Artificial neural networks are deemed to some extent to model the human brain, and simulate its functions in the form of parallel information processing. They are considered important components of Artificial Intelligence (Al). With neural networks, it is possible to learn from examples, or more precisely to learn from input-output data samples. The combination of the neural and fuzzy approach proved to be a powerful combination for dealing with qualitative data. The problem of automated knowledge modeling is efficiently solved by employment of machine learning techniques. Here, the expertise of prof. dr. Ozer Ciftcioglu in the field of soft computing was crucial for tool development. By combining knowledge from two different disciplines a unique tool could be developed that would enable intelligent modeling of soft data needed for support of the building design process. In this respect, this research is a starting point in that direction. It is multidisciplinary and on the cutting edge between the field of Architecture and the field of Artificial Intelligence. From the architectural viewpoint, the perception of space is considered through relationship between a human being and a built environment. Techniques from the field of Artificial Intelligence are employed to model that relationship. Such an efficient combination of two disciplines makes it possible to extend our knowledge boundaries in the field of architecture and improve design quality. With additional techniques, meta know/edge, or in other words "knowledge about knowledge", can be created. Such techniques involve sensitivity analysis, which determines the amount of dependency of the output of a model (comfort and public safety) on the information fed into the model (input). Another technique is functional relationship modeling between aspects, which is derivation of dependency of a design parameter as a function of user's perceptions. With this technique, it is possible to determine functional relationships between dependent and independent variables. This thesis is a contribution to better understanding of users' perception of underground space, through the prism of public safety and comfort, which was achieved by means of intelligent knowledge modeling. In this respect, this thesis demonstrated an application of ICT (Information and Communication Technology) as a partner in the building design process by employing advanced modeling techniques. The method explained throughout this work is very generic and is possible to apply to not only different areas of architectural design, but also to other domains that involve qualitative data.
keywords	Underground Space; Perception; Soft Computing
series	thesis:PhD
email
last changed	2003/02/12 22:37

_id	2e77
authors	Ekholm, A. and Fridqvist, S.
year	2000
title	A concept of space for building classification, product modelling, and design
source	Automation in Construction 9 (3) (2000) pp. 315-328
summary	Information about a building's spaces is of interest in every stage of the construction and facility management processes. An organisation1 or enterprise is located in and uses the building's spaces, and many of the building's spatial properties are determined on the basis of the user organisation's requirements. The definition of the concept "space" as applied in information systems for building classification and building product modelling today is unclear. A fundamental problem is to reconcile a material and construction method viewpoint with a space-centred viewpoint. In order to enable communication among actors and computer systems in the construction process, the concepts used in model development and the corresponding terms have to be formally defined and standardised. In this article, we analyse the concept of space and suggest a comprehensive definition for the construction context. The identification of a space in a building is based on a spatial view. We introduce the concept of aspectual unit and show how this concept can be used to integrate different aspect views in a conceptual schema. Additionally, we define the user organisation as a thing, which is separate from the building and has spatial properties of its own, so-called "activity spaces". Finally, we show how space may be represented in a comprehensive conceptual schema.
series	journal paper
more	http://www.elsevier.com/locate/autcon
last changed	2003/05/15 21:22

_id	f78f
authors	Fridqvist, Sverker
year	2000
title	Property-Oriented Information Systems for DesignPrototypes for the BAS•CAAD system
source	Lund Institute of Technology, School of Architecture
summary	Property-oriented systems are a new kind of information systems that are based on concepts of properties instead of concepts of things or classes of things. By focusing on properties, the property-oriented systems become more flexible and more suited to the dynamic early stages of design than the traditional class-oriented systems can be. The theoretical framework for property-oriented systems developed within the BASCAAD project and presented in this thesis has previously been presented in several papers, a selection of which are included here. Some of the basic considerations from the papers are further developed in a separate chapter. Additionally, the thesis covers several questions regarding prerequisites for and implications of property-oriented systems. These questions have not been addressed in earlier BASCAAD publications. The development of research proptotypes based on the theoretical framework is presented, with a discussion of the different versions and the considerations behind them. A study of the history of computer aided building design has revealed that many basic ideas of today were developed the first time at the beginning of electronic computing, in the early sixties. Since the early development seems to be unknown today, a brief account is presented in this thesis, with special focus on issues considered in the BAS*CAAD project. Finally, the experimental architectural design software DASK, developed mainly by the present author in the later 1980s, will get its first presentation in writing in this thesis.
keywords	Information Technology; Design; Construction; Product Modelling
series	thesis:PhD
email
more	http://www.lub.lu.se/cgi-bin/show_diss.pl?db=global&fname=tec_391.html
last changed	2003/02/12 22:37

_id	c839
authors	Hwang, Jie-Eun
year	2002
title	SpaceScope: Developing a Spatial Information Retrieval System - Focused on Apartment Unit Floor Plans -
source	Yonsei University, Dept. of Housing & Interior Design
summary	This research investigates the spatial information retrieval (IR) in architecture focused on constructing efficient metadata that is crucial for data retrieval. Generally speaking, metadata is ‘structured data about data’ to describe resources especially in a digital format. In this research, metadata is a sort of data object to be useful in searching spatial information. Metadata is also used to describe raw spatial data object as not only attribute data but also content structurally and semantic ally. There are two issues that motivate this research; 1) what is the spatial information – that materializes the intangible space as a data object, and 2) how we can search the information efficiently – the content-based information retrieval. Although knowledge of a building’s spatial content is most important in architecture, there has been no logical method to manage it. From the viewpoint of content-based retrieval, the researcher analyzes spatial information of a floor plan, with a focus on the apartment unit floor plan common in Korea. Then the metadata items are extracted in a structured manner. To manage the items efficiently, the researcher develops a data model for spatial information according to the concept of the “Structured Floor Plan”. The main object of content to retrieve is a spatial network that consists of nodes of spaces and their linkages. There are two ways to organize the metadata: the traditional index files and the RDF (Resource Description Framework). While the index files are still efficient with computability, the RDF applies greater options to retrieve, such as fuzzy predicates, semantic predicates, and so on. To exploit the metadata, this research shows several possibilities of query operations that present a set of sample queries about L-DK(Living room – Dining room – Kitchen). Implementation of the prototype system is divided into three parts: 1) a modeling module using Vitruvius; 2) an indexing module using MS SQL Server? 2000 in conjunction XML; and 3) a browsing module using the SpaceScope browser. The future works may consider XML-based databases and a knowledge based query language, such as RQL/XQL, working on such databases. The more specific domain knowledge is involved, the more practical systems would be. Even in architecture, there may be a diverse range of domain knowledge, such as design, building performance, facility management, energy management, post occupied evaluation, historical research, and so on. Also the issue of interface should be investigated in depth, so that it will be adequate to the needs of the architectural field.
keywords	Content-based Information Retrieval; Metadata; RDF; XML; Spatial Information; Apartment Floor Plan; Semantics
series	thesis:MSc
email
last changed	2003/04/25 07:27

_id	ddssar0023
id	ddssar0023
authors	Jens Pohl, Art Chapman, and Kym Jason Pohl
year	2000
title	Computer-aided design systems for the 21st century: some design guidelines
source	Timmermans, Harry (Ed.), Fifth Design and Decision Support Systems in Architecture and Urban Planning - Part one: Architecture Proceedings (Nijkerk, the Netherlands)
summary	This paper proposes nine design principles for a new generation of computer-aided design (CAD) systems that actively support the decision making and problem solving activities of environmental design. Foremost among these are: a meaningful internal object-based representation of the artifact being designed within its environmental context; a collaborative problem solving paradigm in which the human designer and the computer form a complementary partnership; and, the notion of decision-support tools rather than predefined solutions. Two prototype computer-aided design systems implemented by the CAD Research Center that embody most of these concepts are described. ICADS (Intelligent Computer-Aided Design System) incorporates multiple expert agents in domains such as natural and artificial lighting, noise control, structural system selection, climatic determinants, and energy conservation. Given a particular building design context, the agents in ICADS draw upon their own expertise and several knowledgebases as they monitor the actions of the human designer and collaborate opportunistically. KOALA (Knowledge-Based Object-Agent Collaboration) builds on the multi-agent concepts embodied in ICADS by the addition of two kinds of agents. Mentor agents represent the interests of selected objects within the ontology of the design environment. In the implemented KOALA system building spaces are represented by agents capable of collaborating with each other, with domain agents for the provision of expert services, and with the human designer. Facilitator agents listen in on the communications among mentor agents to detect conflicts and moderate arguments. While both of these prototype systems are limited in scope by focussing on the earliest design stages and restricted in their understanding of the inherent complexity of a design state, they nevertheless promise a paradigm shift in computer-aided design.
series	DDSS
last changed	2003/08/07 16:36

_id	ga0008
id	ga0008
authors	Koutamanis, Alexander
year	2000
title	Redirecting design generation in architecture
source	International Conference on Generative Art
summary	Design generation has been the traditional culmination of computational design theory in architecture. Motivated either by programmatic and functional complexity (as in space allocation) or by the elegance and power of representational analyses (shape grammars, rectangular arrangements), research has produced generative systems capable of producing new designs that satisfied certain conditions or of reproducing exhaustively entire classes (such as all possible Palladian villas), comprising known and plausible new designs. Most generative systems aimed at a complete spatial design (detailing being an unpopular subject), with minimal if any intervention by the human user / designer. The reason for doing so was either to give a demonstration of the elegance, power and completeness of a system or simply that the replacement of the designer with the computer was the fundamental purpose of the system. In other words, the problem was deemed either already resolved by the generative system or too complex for the human designer. The ongoing democratization of the computer stimulates reconsideration of the principles underlying existing design generation in architecture. While the domain analysis upon which most systems are based is insightful and interesting, jumping to a generative conclusion was almost always based on a very sketchy understanding of human creativity and of the computer's role in designing and creativity. Our current perception of such matters suggests a different approach, based on the augmentation of intuitive creative capabilities with computational extensions. The paper proposes that architectural generative design systems can be redirected towards design exploration, including the development of alternatives and variations. Human designers are known to follow inconsistent strategies when confronted with conflicts in their designs. These strategies are not made more consistent by the emerging forms of design analysis. The use of analytical means such as simulation, couple to the necessity of considering a rapidly growing number of aspects, means that the designer is confronted with huge amounts of information that have to be processed and integrated in the design. Generative design exploration that can combine the analysis results in directed and responsive redesigning seems an effective method for the early stages of the design process, as well as for partial (local) problems in later stages. The transformation of generative systems into feedback support and background assistance for the human designer presupposes re-orientation of design generation with respect to the issues of local intelligence and autonomy. Design generation has made extensive use of local intelligence but has always kept it subservient to global schemes that tended to be holistic, rigid or deterministic. The acceptance of local conditions as largely independent structures (local coordinating devices) affords a more flexible attitude that permits not only the emergence of internal conflicts but also the resolution of such conflicts in a transparent manner. The resulting autonomy of local coordinating devices can be expanded to practically all aspects and abstraction levels. The ability to have intelligent behaviour built in components of the design representation, as well as in the spatial and building elements they signify, means that we can create the new, sharper tools required by the complexity resulting from the interpretation of the built environment as a dynamic configuration of co-operating yet autonomous parts that have to be considered independently and in conjunction with each other. P.S. The content of the paper will be illustrated by a couple of computer programs that demonstrate the princples of local intelligence and autonomy in redesigning. It is possible that these programs could be presented as independent interactive exhibits but it all depends upon the time we can make free for the development of self-sufficient, self-running demonstrations until December.
series	other
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

_id	3760
authors	Koutamanis, Alexander
year	2000
title	Recognition and Indexing of Architectural Features in Floor Plans on the Internet
source	CAADRIA 2000 [Proceedings of the Fifth Conference on Computer Aided Architectural Design Research in Asia / ISBN 981-04-2491-4] Singapore 18-19 May 2000, pp. 357-366
doi	https://doi.org/10.52842/conf.caadria.2000.357
summary	The Internet promises a worldwide information system, capable of uniting different sources and types of original, up-to-date and directly usable information. Among the main components of this system are retrieval mechanisms characterized by high precision and recall, as well as by supportive relevance feedback. The textual versions of these retrieval mechanisms have been available for some time and have achieved a certain degree of efficiency and sophistication. Image retrieval lags behind, despite the recent advances in content-based retrieval. In architecture this is largely due to the lack of integration of domain knowledge and known formalisms. Indexing and retrieval of architectural floor plans can rely on existing generative systems such as shape grammars and rectangular arrangements. By reversing generative systems in purpose we derive compact descriptions that describe completely a floor plan and make explicit all relevant features rather than a small number of features. The main limitation of reversed generative systems is that they apply to specific classes of designs. Unification in indexing and retrieval can only take place at the level of basic primitives, i.e. spaces and building elements. In both vector and pixel images of architectural floor plans this can be achieved by a universal recognition system that identifies salient local features to produce a basic spatial representation.
series	CAADRIA
email
last changed	2022/06/07 07:51

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