Cumincad : CUMINCAD Papers : Search Results

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	44c0
authors	Van Leeuwen, Jos P.
year	1999
title	Modelling architectural design information by features : an approach to dynamic product modelling for application in architectural design
source	Eindhoven University of Technology
summary	Architectural design, like many other human activities, benefits more and more from the ongoing development of information and communication technologies. The traditional paper documents for the representation and communication of design are now replaced by digital media. CAD systems have replaced the drawing board and knowledge systems are used to integrate expert knowledge in the design process. Product modelling is one of the most promising approaches in the developments of the last two decades, aiming in the architectural context at the representation and communication of the information related to a building in all its aspects and during its complete life-cycle. However, after studying both the characteristics of the product modelling approach and the characteristics of architectural design, it is concluded in this research project that product modelling does not suffice for support of architectural design. Architectural design is characterised mainly as a problem solving process, involving illdefined problems that require a very dynamic way of dealing with information that concerns both the problem and emerging solutions. Furthermore, architectural design is in many ways an evolutionary process. In short term this is because of the incremental approach to problem solving in design projects; and in long term because of the stylistic development of designers and the continuous developments in the building and construction industry in general. The requirements that are posed by architectural design are concentrated in the keywords extensibility and flexibility of the design informationmodels. Extensibility means that designers can extend conceptual models with definitions that best suit the design concepts they wish to utilise. Flexibility means that information in design models can be structured in a way that accurately represents the design rationale. This includes the modelling of incidental characteristics and relationships of the entities in the model that are not necessarily predefined in a conceptual model. In general, product modelling does not adequately support this dynamic nature of design. Therefore, this research project has studied the concepts developed in the technology of Feature-based modelling, which originates from the area of mechanical engineering. These concepts include the usage of Features as the primitives for defining and reasoning about a product. Features have an autonomous function in the information model, which, as a result, constitutes a flexible network of relationships between Features that are established during the design process. The definition of Features can be specified by designers to formalise new design concepts. This allows the design tools to be adapted to the specific needs of the individual designer, enlarging the library of available resources for design. In addition to these key-concepts in Feature-based modelling as it is developed in the mechanical engineering context, the project has determined the following principles for a Feature-based approach in the architectural context. Features in mechanical engineering are used mainly to describe the lowest level of detail in a product's design, namely the characteristics of its parts. In architecture the design process does not normally follow a strictly hierarchical approach and therefore requires that the building be modelled as a whole. This implies that multiple levels of abstraction are modelled and that Features are used to describe information at the various abstraction levels. Furthermore, architectural design involves concepts that are non-physical as well as physical; Features are to be used for modelling both kinds. The term Feature is defined in this research project to reflect the above key-concepts for this modelling approach. A Feature is an autonomous, coherent collection of information, with semantic meaning to a designer and possibly emerging during design, that is defined to formalise a design concept at any level of abstraction, either physical or non-physical, as part of a building model. Feature models are built up entirely of Features and are structured in the form of a directed graph. The nodes in the graph are the Features, whereas the arcs are the relationships between the Features. Features can be of user-defined types and incidental relationships can be added that are not defined at the typological level. An inventory in this project of what kind of information is involved in the practice of modelling architectural design is based on the analysis of a selection of sources of architectural design information. This inventory is deepened by a case study and results in the proposition of a categorisation of architectural Feature types.
keywords	Automated Management Information Systems; Computer Aided Architectural Design; Information Systems; Modelling
series	thesis:PhD
email
more	http://www.ds.arch.tue.nl/jos/thesis/
last changed	2003/02/12 22:37

_id	6d88
authors	Achten, Henri H. and Van Leeuwen, Jos P.
year	1999
title	Feature-Based High Level Design Tools - A Classification
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 275-290
summary	The VR-DIS project aims to provide design support in the early design stage using a Virtual Reality environment. The initial brief of the design system is based on an analysis of a design case. The paper describes the process of analysis and extraction of design knowledge and design concepts in terms of Features. It is demonstrated how the analysis has lead to a classification of design concepts. This classification forms one of the main specifications for the VR-based design aid system that is being developed in the VR-DIS programme. The paper concludes by discussing the particular approach used in the case analysis and discusses future work in the VR-DIS research programme.
keywords	Features, Feature-Based modelling, Architectural Design, Design Process, Design Support
series	CAAD Futures
email
last changed	2006/11/07 07:22

_id	d79a
authors	Ekholm, Anders and Fridqvist, Sverker
year	1999
title	The BAS*CAAD Information System for Design principles, Implementation, and a Design Scenario
source	Proceedings of the Eighth International Conference on Computer Aided Architectural Design Futures [ISBN 0-7923-8536-5] Atlanta, 7-8 June 1999, pp. 149-164
summary	The objectives of the BAS-CAAD-project are to investigate into theories and methods for computer aided architectural design, with emphasis on requirements of early stages of the design process. Information systems can be characterised as static or dynamic concerning the definition of classes in the model schema, and concerning classification of model objects. The paper presents the BAS-CAAD system, a prototype software that implements the conceptually most important features of a dynamic information system for design. The BAS-CAAD information system is built on a generic ontological framework. The system allows a free combination of attributes, supporting the incremental way that knowledge is built up during design. It provides a generic library structure that allows definition of objects classes in different levels of generalisation that may originate from international standards or the individual designer. For example, in the construction context, it allows modelling of buildings and their parts, as well as user organisations and user activities. The function of the system is illustrated in two scenarios.
keywords	CAD, Design, Dynamic Schema Evolution, Information Systems, Object Oriented Modelling, Product Modelling, Design Scenario
series	CAAD Futures
email
last changed	2006/11/07 07:23

_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	ab9c
authors	Kvan, Thomas and Kvan, Erik
year	1999
title	Is Design Really Social
source	International Journal of Virtual Reality, 4:1
summary	There are many who will readily agree with Mitchell's assertion that "the most interesting new directions (for computer-aided design) are suggested by the growing convergence of computation and telecommunication. This allows us to treat designing not just as a technical process... but also as a social process." [Mitchell 1995]. The assumption is that design was a social process until users of computer-aided design systems were distracted into treating it as a merely technical process. Most readers will assume that this convergence must and will lead to increased communication between design participants, that better social interaction leads to be better design. The unspoken assumption appears to be that putting the participants into an environment with maximal communication channels will result in design collaboration. The tools provided, therefore, must permit the best communication and the best social interaction. We see a danger here, a pattern being repeated which may lead us into less than useful activities. As with several (popular) architectural design or modelling systems already available, however, computer system implementations all too often are poor imitations manual systems. For example, few in the field will argue with the statement that the storage of data in layers in a computer-aided drafting system is an dispensable approach. Layers derive from manual overlay drafting technology [Stitt 1984] which was regarded as an advanced (manual) production concept at the time many software engineers were specifying CAD software designs. Early implementations of CAD systems (such as RUCAPS, GDS, Computervision) avoided such data organisation, the software engineers recognising that object-based structures are more flexible, permitting greater control of data editing and display. Layer-based systems, however, are easier to implement in software, more familiar to the user and hence easier to explain, initially easier to use but more limiting for an experienced and thoughtful user, leading in the end to a lesser quality in resultant drawings and significant problems in output control (see Richens [1990], pp. 31-40 for a detailed analysis of such features and constraints). Here then we see the design for architectural software faithfully but inappropriately following manual methods. So too is there a danger of assuming that the best social interaction is that done face-to-face, therefore all collaborative design communications environments must mimic face-to-face.
series	journal paper
email
last changed	2003/05/15 10:29

_id	d8df
authors	Naticchia, Berardo
year	1999
title	Physical Knowledge in Patterns: Bayesian Network Models for Preliminary Design
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 611-619
doi	https://doi.org/10.52842/conf.ecaade.1999.611
summary	Computer applications in design have pursued two main development directions: analytical modelling and information technology. The former line has produced a large number of tools for reality simulation (i.e. finite element models), the latter is producing an equally large amount of advances in conceptual design support (i.e. artificial intelligence tools). Nevertheless we can trace rare interactions between computation models related to those different approaches. This lack of integration is the main reason of the difficulty of CAAD application to the preliminary stage of design, where logical and quantitative reasoning are closely related in a process that we often call 'qualitative evaluation'. This paper briefly surveys the current development of qualitative physical models applied in design and propose a general approach for modelling physical behaviour by means of Bayesian network we are employing to develop a tutoring and coaching system for natural ventilation preliminary design of halls, called VENTPad. This tool explores the possibility of modelling the causal mechanism that operate in real systems in order to allow a number of integrated logical and quantitative inference about the fluid-dynamic behaviour of an hall. This application could be an interesting connection tool between logical and analytical procedures in preliminary design aiding, able to help students or unskilled architects, both to guide them through the analysis process of numerical data (i.e. obtained with sophisticate Computational Fluid Dynamics software) or experimental data (i.e. obtained with laboratory test models) and to suggest improvements to the design.
keywords	Qualitative Physical Modelling, Preliminary Design, Bayesian Networks
series	eCAADe
email
last changed	2022/06/07 07:59

_id	9c96
authors	Szalapaj, Peter and Chang, David C.
year	1999
title	Computer Architectural Representation - Applying the VOIDs Framework to a Bridge Design Scheme
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 387-394
doi	https://doi.org/10.52842/conf.ecaade.1999.387
summary	A virtual environment presents sensory information and visual feedback to the user in order to give convincing illusion of an artificial world. In the architectural profession, the spatio-temporal metaphor in itself constitutes significant information retrieval, because we understand architecture by seeing it. This paper attempts to understand, and then to analyse the characteristics of representation of architectural models in virtual environments. We will examine the use and creativity of current computer generated architectural presentation in virtual environments. Our observations will be applied to the modelling of a bridge in Castlefield, Manchester, and evaluated by a group of students within the School of Architecture at Sheffield University. The conclusion of this paper will be the presentation of a conceptual structure for representing architectural models in virtual environments. This paper also explores the tension between the correspondence and constructivist views of representation. The correspondence view of representation relies on the idea that a representation corresponds to what is out there in the world. The constructivist view of representation advocates that any actual interpretation would depend on the context of their social and cultural backgrounds. However, the authors believe there should be a combination of these two views for architectural representation in virtual environments, and a framework developed by the authors - VOIDs will be presented.
keywords	Virtual Environment, Architectural Representation, VOIDs, Correspondence, Constructivist
series	eCAADe
email
last changed	2022/06/07 07:56

_id	8171
authors	Ataman, Osman
year	1999
title	Facilitating Conceptual Change: Computers, Cognitive Processes and Architecture
source	III Congreso Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings] Montevideo (Uruguay) September 29th - October 1st 1999, pp. 275-279
summary	Computers have gained universal acceptance as tools that designers use. However, computers are often not used to advance the design process but just to make drawings. Many architectural schools still focus on a production orientation which puts the highest value on information management, precise representations and drafting enhancements. Mostly, computer education is limited with button pushing and training manuals. It is the contention of the author that students in Design Studio courses can benefit greatly from computer based educational pedagogy designed to provide them with experiences they currently do not possess. In particular, little time in the computer courses (outside lectures) is spent applying concepts and features of digital tools in design studio environment. In architecture, computers cannot be simply defined as a presentation and production tools. As a cognitive tool, computers provide designers with intelligible and effective representational tools of thought and communication, changes the syntactic structure of design. Consequently, the conceptual structure of computers impacts the conceptual structure of the design project, fosters the analytical processes and facilitates conceptual changes. This paper describes the use of computers in a first year architectural design studio. It attempts to address the importance of developing a design process that is redefined by the use of computing, integrating concept and perception. Furthermore, it describes the theoretical foundations and the underlying cognitive processes that contribute designers' conceptual development.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	840e
authors	Ceccato, C.
year	1999
title	Microgenesis. The Architect as Toolmaker: Computer-Based GenerativeDesign Tools and Methods
source	Soddu, C. (ed.): The Proceedings of the First International Generative Art Conference. Generative Design Lab at DiAP, Politecnico di Milano University
summary	The purpose of this paper is to illustrate the results of various stages of research into the development of generative design methods and tools, conducted at the Architectural Association School of Architecture (London), Imperial College of Science, Technology and Medicine (London), and independently. A brief introduction explains the philosophy behind generative design methods and their basic principles. A number of computer software tools and projects developed by the author are then used to illustrate the methodology, techniques and features of generative design and its organisation of information.
series	other
last changed	2003/04/23 15:14

_id	5169
authors	Ceccato, Cristiano
year	1999
title	The Architect as Toolmaker: Computer-Based Generative Design Tools and Methods
source	CAADRIA '99 [Proceedings of The Fourth Conference on Computer Aided Architectural Design Research in Asia / ISBN 7-5439-1233-3] Shanghai (China) 5-7 May 1999, pp. 295-304
doi	https://doi.org/10.52842/conf.caadria.1999.295
summary	The purpose of this paper is to illustrate the results of various stages of research into the development of generative design methods and tools, conducted at the Architectural Association School of Architecture (London), Imperial College of Science, Technology and Medicine (London), and independently. A brief introduction explains the philosophy behind generative design methods and their basic principles. A number of computer software tools and projects developed by the author are then used to illustrate the methodology, techniques and features of generative design and its organisation of information.
series	CAADRIA
email
last changed	2022/06/07 07:55

_id	8d64
authors	Penttilä, Hannu
year	1999
title	Top 5 Themes to Promote Architectural Information Technology and Top 5 Obstacles to Decelerate it
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 6-10
doi	https://doi.org/10.52842/conf.ecaade.1999.006
summary	The objective of this paper is to scan a few interesting themes, features and ideas of current information and communication technology (ICT) to promote their wise use within the fields of architectural practice and architectural education. The core idea is to prepare for the future by understanding the future relevance of the dominating themes. The meaning and significance of the selected and presented common ideas is evaluated to strengthen a realistic future basis for the design discipline. The author finds organizing, structuring and sharing architectural design data with digital tools the most future-relevant ICT-theme, that should be supported with R&D-activities and taught in architectural ICT-education. The obstacles of digitalization to produce negative impacts to architectural profession seem to be of mental nature rather than technical. The human mind, juridical agreements and long-lived design traditions are possibly the most threatening and restrictive obstacles in the future. The selected top 5 methods in evaluating existing trends and features has been used for instance in futures studies as one systematical approach to chart history and current times as informants of the future (Bell, 1996). A pragmatic and personal approach has been used in selecting the themes.
keywords	Architectural Information and Communication Technology (ICT), ICT-trends, Future Studies, Future Relevance
series	eCAADe
type	normal paper
email
last changed	2022/06/07 08:00

_id	53df
authors	Uddin, M.S.
year	1999
title	Hybrid Drawing Techniques by Contemporary Architects and Designers
source	John Wiley, New York,
summary	The complete hybrid drawing sourcebook Hybrid drawings offer limitless possibilities for the fusion and superimposition of ideas, media, and techniques-powerful creative tools for effective and innovative architectural graphic presentation. This unique guide offers a dynamic introduction to these drawings and how they are created, with a stunning color portfolio of presentation-quality examples that give full visual expression to the power and potential of hybrid drawing techniques. Featuring the work of dozens of internationally recognized architects and firms, including Takefumi Aida, Helmut Jahn of Murphy/Jahn Architects, Morphosis, Eric Owen Moss, NBBJ Sports & Entertainment, Smith-Miller & Hawkinson, and Bernard Tschumi Architects, the book's visual examples are accompanied by descriptive and analytical commentary that gives valuable practical insight into the background of each project, along with essential information on the design concept and the drawing process. Combining all of the best features of an idea resource and a how-to guide, Hybrid Drawing Techniques by Contemporary Architects and Designers is an important creative tool for students and professionals in architecture, design, illustration, and related areas
series	other
last changed	2003/04/23 15:14

_id	ae61
authors	Af Klercker, Jonas
year	1999
title	CAAD - Integrated with the First Steps into Architecture
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 266-272
doi	https://doi.org/10.52842/conf.ecaade.1999.266
summary	How and when should CAAD be introduced in the curriculum of the School of Architecture? This paper begins with some arguments for starting CAAD education at the very beginning. At the School of Architecture in Lund teachers in the first year courses have tried to integrate CAAD with the introduction to architectural concepts and techniques. Traditionally the first year is divided by several subjects running courses separatly without any contact for coordination. From the academic year 96/97 the teachers of Aplied aestetics, Building Science, Architectural design and CAAD have decided to colaborate as much as possible to make the role of our different fields as clear as possible to the students. Therefore integrating CAAD was a natural step in the academic year 98/99. The computer techniques were taught one step in advance so that the students can practise their understanding of the programs in their tasks in the other subjects. The results were surprisingly good! The students have quickly learned to mix the manual and computer techniques to make expressive and interesting visual presentations of their ideas. Some students with antipaty to computers have overcome this handicap. Some interesting observations are discussed.
keywords	Curriculum, First Year Studies, Integration, CAAD, Modelling
series	eCAADe
email
last changed	2022/06/07 07:54

_id	3936
authors	Geroimenko, Vladimir
year	1999
title	Online Photorealistic VR with Interactive Architectural Objects
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 414-417
doi	https://doi.org/10.52842/conf.ecaade.1999.414
summary	This paper describes how Virtual Reality (VR) technologies can be used for modelling photorealistic environments with interactive and changeable architectural content. This application of VR allows us to create photograph-based panoramic models of real places that include a variety of interactive architectural objects and details. The user is able not only to navigate through a virtual environment (look around, up and down, zoom, jump to another viewpoint or location) but also to change buildings or their architectural details by clicking, moving or rotating. The following types of interactive objects are completely integrated with a virtual environment: 2D image-based objects, 3D image-based objects, 3D VRML-based objects and onscreen world controls. The application can be used effectively for teaching, including distance Internet-based education, project presentations and rapid prototyping. A sample VR environment is presented and some of the key creative and technological issues are discussed.
keywords	Virtual Reality Modelling, Architectural Design, Interactive Contents, Photorealistic Environments
series	eCAADe
email
last changed	2022/06/07 07:51

_id	3940
authors	Hall, Rick
year	1999
title	Realtime 3D visual Analysis of Very Large Models at Low Cost
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 437-441
doi	https://doi.org/10.52842/conf.ecaade.1999.437
summary	Computer based visualisation of 3D models in architecture has been possible for 20 years or more, and the software technology has steadily improved during this time so that now incredibly realistic images can be generated from any viewpoint in a model, and impressive fly through sequences can bring a model to life in ways previously not possible. Virtual reality is with us and multi-media enables us to present a finished design in increasingly seductive ways. However, these forms of output from a 3D model offer much more limited benefits during the design process and particularly on large complex models because they are so computing intensive and it often require many hours to produce just one image. Anything other than a small and relatively simple model cannot be viewed dynamically in real-time on a desktop PC of the type commonly used by architects in a design office. Until now the solution to this problem has meant investing in expensive design review hardware and software with its inherent need for trained, skilled labour. As a result, design review products are often viewed as a luxury or costly necessity.
keywords	Visual Analysis, Low Cost, 3D Modelling
series	eCAADe
last changed	2022/06/07 07:50

_id	94b4
authors	Matalasov, M. and Lapshina, Je.
year	1999
title	Modelling (Simulation) and Reality
source	Simulation of Architectural Space - Color and Light, Methods and Effects [Proceedings of the 4rd European Architectural Endoscopy Association Conference / ISBN 3-86005-267-5] Dresden (Germany), 29 September - 1 October 1999, pp. 32-35
summary	In a terms of studying and practical design a sufficient experience of analytic work of our lab shows, that the view of suggesting scheme on the same kind of process development is accompanied by sadden mistakes or conscious inaccuracies.Traditional conventions of architectural models same times with no paying attention to scale and size may drive to cause of distortion from the points of view to them. Power and possibilities of modern CAD initiates same sort of temptations and errors. For our point of view, solving the above problems is having same restrictions, one of which, may be – providing a visual coincidence of the videoframes of building site and it’s model done whether by small scale modelling or CAD. According to our practice a different methods of superimposing of real and designing spaces are shown in this article.
series	EAEA
more	http://info.tuwien.ac.at/eaea
last changed	2005/09/09 10:43

_id	0c9c
authors	Tweed, Christopher
year	1999
title	Prescribing Designs
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 51-57
doi	https://doi.org/10.52842/conf.ecaade.1999.051
summary	Much of the debate and argument among CAAD researchers has turned on the degree to which CAAD systems limit the ways in which designers can express themselves. By defining representations for design objects and design functions, systems determine what it is possible to describe. Aart Bijl used the term 'prescriptiveness' to refer to this property of systems, and the need to overcome it was a major preoccupation of research at EdCAAD during the 1980s, including the development of the MOLE (Modelling Objects with Logic Expressions) system. But in trying to offer designers the freedom that was judged to be essential to evolving design practices, MOLE transferred much of the burden of programming from system developers to end-users - you can have any design objects you want, as long as you write the code. Close examination of MOLE's logic reveals that it too had to rely on fundamental definitions that, even if not domain-specific, are certainly historically contingent. This paper will return to the issue of prescriptiveness, summarising the lessons learned from the MOLE 'experiment,' and identifying new prescriptions that are deciding what designs can be. Looking beyond computer representations, we find that designs are shaped by much larger, and arguably more powerful, historical, social and cultural forces surrounding design practice. These forces are shaping the way CAAD is used and how new systems are conceived and developed.
keywords	Bijl, Prescriptiveness
series	eCAADe
email
last changed	2022/06/07 07:58

_id	b7df
authors	Uddin, M. Saleh
year	1999
title	Beyond Mere Representation: The Changing Perspective of Computer Use in American Architecture
source	Architectural Computing from Turing to 2000 [eCAADe Conference Proceedings / ISBN 0-9523687-5-7] Liverpool (UK) 15-17 September 1999, pp. 511-518
doi	https://doi.org/10.52842/conf.ecaade.1999.511
summary	By surveying a total of 55 cutting-edge architectural design offices (mostly in the United States), this paper looks at the use of computational media to get an overall understanding of its current use for architectural design presentation. The intent of this paper is to highlight the changing direction of computer presentation through graphic examples, specifically three-dimensional modelling that goes beyond conventional representation. The paper also illustrates various types of uses of computer media by designers into specific categories, and extracts a summary of hardware and software preferences.
keywords	Digital Media, Design Offices, Non-conventional Representation, 3D Modelling
series	eCAADe
last changed	2022/06/07 07:57

_id	cf2011_p109
id	cf2011_p109
authors	Abdelmohsen, Sherif; Lee Jinkook, Eastman Chuck
year	2011
title	Automated Cost Analysis of Concept Design BIM Models
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. 403-418.
summary	AUTOMATED COST ANALYSIS OF CONCEPT DESIGN BIM MODELS Interoperability: BIM models and cost models This paper introduces the automated cost analysis developed for the General Services Administration (GSA) and the analysis results of a case study involving a concept design courthouse BIM model. The purpose of this study is to investigate interoperability issues related to integrating design and analysis tools; specifically BIM models and cost models. Previous efforts to generate cost estimates from BIM models have focused on developing two necessary but disjoint processes: 1) extracting accurate quantity take off data from BIM models, and 2) manipulating cost analysis results to provide informative feedback. Some recent efforts involve developing detailed definitions, enhanced IFC-based formats and in-house standards for assemblies that encompass building models (e.g. US Corps of Engineers). Some commercial applications enhance the level of detail associated to BIM objects with assembly descriptions to produce lightweight BIM models that can be used by different applications for various purposes (e.g. Autodesk for design review, Navisworks for scheduling, Innovaya for visual estimating, etc.). This study suggests the integration of design and analysis tools by means of managing all building data in one shared repository accessible to multiple domains in the AEC industry (Eastman, 1999; Eastman et al., 2008; authors, 2010). Our approach aims at providing an integrated platform that incorporates a quantity take off extraction method from IFC models, a cost analysis model, and a comprehensive cost reporting scheme, using the Solibri Model Checker (SMC) development environment. Approach As part of the effort to improve the performance of federal buildings, GSA evaluates concept design alternatives based on their compliance with specific requirements, including cost analysis. Two basic challenges emerge in the process of automating cost analysis for BIM models: 1) At this early concept design stage, only minimal information is available to produce a reliable analysis, such as space names and areas, and building gross area, 2) design alternatives share a lot of programmatic requirements such as location, functional spaces and other data. It is thus crucial to integrate other factors that contribute to substantial cost differences such as perimeter, and exterior wall and roof areas. These are extracted from BIM models using IFC data and input through XML into the Parametric Cost Engineering System (PACES, 2010) software to generate cost analysis reports. PACES uses this limited dataset at a conceptual stage and RSMeans (2010) data to infer cost assemblies at different levels of detail. Functionalities Cost model import module The cost model import module has three main functionalities: generating the input dataset necessary for the cost model, performing a semantic mapping between building type specific names and name aggregation structures in PACES known as functional space areas (FSAs), and managing cost data external to the BIM model, such as location and construction duration. The module computes building data such as footprint, gross area, perimeter, external wall and roof area and building space areas. This data is generated through SMC in the form of an XML file and imported into PACES. Reporting module The reporting module uses the cost report generated by PACES to develop a comprehensive report in the form of an excel spreadsheet. This report consists of a systems-elemental estimate that shows the main systems of the building in terms of UniFormat categories, escalation, markups, overhead and conditions, a UniFormat Level III report, and a cost breakdown that provides a summary of material, equipment, labor and total costs. Building parameters are integrated in the report to provide insight on the variations among design alternatives.
keywords	building information modeling, interoperability, cost analysis, IFC
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	ga9925
id	ga9925
authors	Ambrosini, L., Longatti, M. and Miyajima, H.
year	1999
title	Time sections, abstract machines
source	International Conference on Generative Art
summary	conditions a time-spatial discontinuity in the urban grid, ancient walls casually discovered in a substrate of the contemporary town needs a surplus of information to be understood and interfaced with their current condition. diagrams diverse chronological stages of the urban evolution are mapped on the area, in order to read the historical stratifications as a multiplicity of signs; this abstract approach leads to consider the roman space as guided by metrics, a system of measure superimposed on the landscape, vs. medioeval spatial continuity, where more fluid relations between the same urban elements create a completely different pattern.assemblage (time sections) a surface, automatically displaced from the medioeval diagram, moves along the z axis, the historical stratification direction, intersecting in various, unpredictable, manners a series of paths; these paths start as parallels, allowing an undifferentiated access to the area, and mutate along their developing direction, intertweening and blending each other; linear openings are cut on the surface, virtually connecting the two levels by light, following the roman grid in rhythm and measure. Projected on the lateral wall, the cadence of the vertical and horizontal elements becomes a temporal diagram of the design process.movement time takes part into the process through two kinds of movement: the first one, freezed when reaches the best results, in terms of complexity, is given by the surface intersecting the tubular paths; the second one is represented by multiple routes walking on which the project can be experienced (in absence of any objective, fixed, point of view, movement becomes the only way to understand relations). Thresholds between typical architectural categories (such as inside-outside, object-landscape etc.) are blurred in favour of a more supple condition, another kind of continuity (re)appears, as a new media, between the different historical layers of the city.
series	other
more	http://www.generativeart.com/
last changed	2003/08/07 17:25

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