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	a2b0
id	a2b0
authors	Charitos, Dimitrios
year	1998
title	The architectural aspect of designing space in virtual environments
source	University of Strathclyde, Dept. of Architecure and Building Science
summary	This thesis deals with the architectural aspect of virtual environment design. It aims at proposing a framework, which could inform the design of three-dimensional content for defining space in virtual environments, in order to aid navigation and wayfinding. The use of such a framework in the design of certain virtual environments is considered necessary for imposing a certain form and structure to our spatial experience in there. Firstly, this thesis looks into literature from the fields of architectural and urban design theory, philosophy, environmental cognition, perceptual psychology and geography for the purpose of identifying a taxonomy of spatial elements and their structure in the real world, on the basis of the way that humans think about and remember real environments. Consequently, the taxonomy, proposed for space in the real world is adapted to the intrinsic characteristics of space in virtual environments, on the basis of human factors aspects of virtual reality technology. As a result, the thesis proposes a hypothetical framework consisting of a taxonomy of spatial and space-establishing elements that a virtual environment may comprise and of the possible structure of these elements. Following this framework, several pilot virtual environments are designed, for the purpose of identifying key design issues for evaluation. As it was impossible to evaluate the whole framework, six specific design issues, which have important implications for the design of space in virtual environments, are investigated by experimental methods of research. Apart from providing answers to these specific design issues, the experimental phase leads to a better understanding of the nature of space in virtual environments and to several hypotheses for future empirical research.
series	thesis:PhD
email
last changed	2003/10/29 21:37

_id	e380
authors	Maver, Thomas W.
year	1998
title	Space Odyssey by Computer - Journeys through the Environment
source	CAADRIA ‘98 [Proceedings of The Third Conference on Computer Aided Architectural Design Research in Asia / ISBN 4-907662-009] Osaka (Japan) 22-24 April 1998, pp. 1-10
doi	https://doi.org/10.52842/conf.caadria.1998.001
summary	The extraordinary characteristic of the city which thrills both its citizens and those who visit it, is the complex way in which multitudes of individual buildings, themselves each a complex of individual spaces, combine to form the weft and weave of the urban fabric. No two cities are alike but each and every one has its innate and endearing character: the grandeur of Vienna, the eternity of Rome, the simplicity of Tucson, the elegance of Edinburgh, the dynamic of Tokyo, the vibrancy of Hong Kong. This presentation illustrates how the emerging computer-based technologies can, in a manner hitherto impossible, explain to students of architecture and urban design (and to the public at large) how the design of individual buildings and their spatial relationship to each other, aggregate to create the environment which characterises the city; in a complementary way it demonstrates how the virtual urban voyager can not only identify and visit individual buildings, but enquire within - to observe, understand and even handle the contents.
series	CAADRIA
email
more	http://www.caadria.org
last changed	2022/06/07 07:58

_id	ddss9858
id	ddss9858
authors	Tisma, Alexandra
year	1998
title	Designing and Deciding
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	In the highly urbanized and densely populated western part of The Netherlands, called Randstad, the space is scarce and therefore the landscape is under the constant pressure. The changes in the landscapeare often the result of decisions brought up by the actors involved in planning in different time periods and different levels of spatial scales. Currently used procedures in the spatial planning practice in TheNetherlands are long lasting and inefficient, based on the old fashioned unicentric model of decision making. The changes in modern ‘informational’ society reflect in growing need for other models than those of hierarchical type. This research deals with urban designs and corresponding decisions which caused the transformation of the original landscape into the urban environment. The aim is to develop a DSS for common citizens inpluricentric society, which will help them to define their individual opinion and choice preferences before they take part in collective negotiations with other decision makers. The DSS will be developed and tested on the case-study area of the Masterplan for South Axes in Amsterdam.
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9803
id	ddss9803
authors	Arentze, T., Borgers, A. and Timmermans, H.
year	1998
title	Extending spatial DSS with spatial choice models of multipurpose shopping trip behaviour
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Spatial choice or interaction models have been widely used in spatial DSS or customised GIS for analysing the impacts of retail location plans. The models typically used, however, do not account for spatial agglomeration effects on spatial choice behaviour. This study develops a model system for analysing the impacts of retail plans based on a choice model of multipurpose behaviour developed in earlier work. The model system is implemented in the spatial DSS called Location Planner. An empirical study demonstrates the empirical estimation and use of the model for analysing the impacts of an expansion of floor space in the major shopping centre of a middle-sized city in The Netherlands. The results indicate that agglomeration effects as predicted by the model can have substantial impacts on the performance of retail systems. Therefore, it is argued that when incorporated in a spatial DSS, the more complex models have the potential to improve the use of these systems for impact analysis.
series	DDSS
last changed	2003/11/21 15:16

_id	ddss9806
id	ddss9806
authors	Besio, M., Frixione, M. and Pedemonte, O.
year	1998
title	GIS technologies in the transfer of theknowledge project to the plan projectmultiple representation of the environmental spaces
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	An analysis is made of the relation between the conceptualand paradigmatic level of GIS technologies and the new forms of plan, whichmake environment the center of attention. The intention is to study newcriteria for zoning able to give contextual representations of theterritorial, environmental and landscape aspects of the geographical space,and also to study new legislative principles, able to establish integratedrules for theprojecting of soil uses, the safeguarding and recovery ofenvironmental systems and the tutelage and boosting of the landscape. The experimentation of GIS (Geographical Information System)technologies aims at the construction of systems helping to make decisionsfor the control of the environmental and landscape aspects of theterritory. An analysis is made of the ways in which there are formulated thedescriptions of the various aspects of the environment: the conceptsthrough which knowledge is expressed, the languages used forrepresentations, the cognitive models adopted. GIS technologies have made it possible to represent in an explicitmanner the paradigms underlying the various models of knowledge.Specifically, the following cognitive models have been developed:- ecological models of nature- ecological models of human settlement- ecological models of inhabitants’ mental perceptions
series	DDSS
last changed	2003/11/21 15:16

_id	ddss9815
id	ddss9815
authors	Cutler, Lorraine M.
year	1998
title	Prototypical Laboratory Design to Support Learning and Teaching
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Collaboration between designers and scientists is an unusual combination to undertake the prototypical design of a teaching laboratory funded by Howard Hughes Medical Institute. The zoologists are developing a cooperative learning and interactive teaching pedagogy to make learningscience a process of critical inquiry and discovery. The industrial and interior designers are paying attention to the design issues of function and environmental support for teaching and doing the work required in a three-hour, hands-on beginning science learning space. Using both qualitative andquantitative research methods, the designers are able to determine a framework for making design decisions in prototypical beginning science environments. This framework is being developed as a guideline for designing similar environments at other institutions of higher learning. Videotape analysis precedes the research to uncover the underlying problems of the existing space and to formulate the questions for the research. Elements of a case study and an evaluative study integratewith the design process to form the basis of an intensive investigation of design issues for a beginning science teaching laboratory. Using two pretests as a baseline, the posttest data evaluates the success orfailure of the prototypical design. Both the pretests and the posttest evaluate the physical attributes of the old and new learning environment related to a beginning laboratory course in Zoology at Arizona State University.
series	DDSS
last changed	2003/08/07 16:36

_id	3d1d
authors	De Vries, B. and Jessurun, A.J.
year	1998
title	An Experimental Design System for the Very Early Design Stage
source	Timmermans (ed.) Proceedings of the 4th Conference on Design and Decision Support Systems in Architecture and Urban Planning, Maastricht
summary	The concepts of the experimental design system that are discussed are feature modeling and geometrical constraints. The main technique for creating the user environment is Virtual Reality. Feature modeling forms the basis for managing the design data. To start with, data storage is implemented in a Relational Data Base Management System. Along with this a (traditional) interface is developed for managing the data. Data management consists of feature type creation and feature type instancing. Features are used to define building elements, their relationships and additional constraints. Apart from the design data, geometrical data are stored. Possible design solutions can be limited using geometrical constraints. Specifying connection types between building elements result in a set of solutions for the position of the bounding boxes of the building elements in space.
series	other
email
last changed	2003/04/23 15:50

_id	a15e
authors	Dijkstra, J. and Timmermans, H.J.P.
year	1998
title	Conjoint Analysis and Virtual Reality - A Review
source	Timmermans (ed.), 4 Ih Design and Decision Support Systems in Architecture and Urban Planning Conference.
summary	This paper describes a review of an ongoing research project which aims to develop a conjoint analysis and virtual reality (CA&VR) system as part of a design information system in virtual reality. The research project aims to develop a design system that can be used for interactive design and evaluation of design alternatives. A virtual environment model and dynamic virtual objects representing the different design aspects of interest can present a design. The different design aspects are called attributes. Each attribute level is a different state of the concerned virtual object. In the case of a virtual walk through a building design, the system can be viewed as a visual simulation of the environment. The CA&VR system has the potential advantage that individuals' preferences can be measured in designed hypothetical choice situations. As part of the ongoing research project, principles underlying the CA&VR system will be illustrated by simple examples. The status of this research project, both in retrospect and in prospect will be described.
series	other
last changed	2003/04/23 15:50

_id	ddss9818
id	ddss9818
authors	Dijkstra, Jan and Timmermans, Harry J.P.
year	1998
title	Conjoint Analysis and Virtual Reality – a Review
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	This paper describes a review of an ongoing research project which aims to develop a conjoint analysis and virtual reality (CA&VR) system as part of a design information system in virtual reality. The research project aims to develop a design system that can be used for interactive design and evaluation of design alternatives. A virtual environment model and dynamic virtual objects representing the different design aspects of interest can present a design. The different design aspects are called attributes. Each attribute level is a different state of the concerned virtual object. In the case of a virtual walk through a building design, the system can be viewed as a visual simulation of the environment. The CA&VR system has the potential advantage that individuals’ preferences can be measured indesigned hypothetical choice situations. As part of the ongoing research project, principles underlying the CA&VR system will be illustrated by simple examples. The status of this research project, both in retrospect and in prospect will be described.
series	DDSS
last changed	2003/08/07 16:36

_id	1d83
authors	Dodge, M., Doyle, S. and Smith, A.
year	1998
title	Visual Communication in Urban Planning and Urban Design
source	Working Paper 2; Centre for Advanced Spatial Analysis Working Papers; London; June 1998
summary	This Case Study documents the current status of visual communication in urban design and planning. Visual communication is examined through discussion of standalone and network media, specifically concentrating on visualisation on the World Wide Web (WWW). First, we examine the use of Solid and Geometric Modelling for visualising urban planning and urban design. This report documents and compares examples of the use of Virtual Reality Modelling Language (VRML) and proprietary WWW based Virtual Reality modelling software. Examples include the modelling of Bath and Glasgow using both VRML 1.0 and 2.0. The use of Virtual Worlds and their role in visualising urban form within multi-user environments is reviewed. The use of Virtual Worlds is developed into a study of the possibilities and limitations of Virtual Internet Design Arena's (ViDA's), an initiative undertaken at the Centre for Advanced Spatial Analysis, University College London. The use of Virtual Worlds and their development towards ViDA's is seen as one of the most important developments in visual communication for urban planning and urban design since the development plan. Secondly, the role of photorealistic media in the process of communicating plans is examined. The process of creating photorealistic media is documented, and examples of the Virtual Streetscape and Wired Whitehall Virtual Urban Interface System are provided. The conclusion is that, although the use of photo-realistic media on the WWW provides a way to visually communicate planning information, its use is limited. The merging of photorealistic media and solid geometric modelling in the creation of Augmented Reality is reviewed. Augmented Reality is seen to provide an important step forward in the ability quickly and easily to visualise urban planning and urban design information. Third, the role of visual communication of planning data through GIS is examined in terms of desktop, three dimensional, and Internet based GIS. The evolution to Internet GIS is seen as a critical component in the development of virtual cities that will allow urban planners and urban designers to visualise and model the complexity of the built environment in networked virtual reality. Finally, a viewpoint is put forward of the Virtual City, linking Internet GIS with photorealistic multi-user Virtual Worlds. At present there are constraints on how far virtual cities can be developed, but a view is provided on how these networked virtual worlds are developing to aid visual communication in urban planning and urban design.
series	other
last changed	2003/04/23 15:50

_id	ddss9826
id	ddss9826
authors	Hendricx, A., Geebelen, B., Geeraerts, B. and Neuckermans, H.
year	1998
title	A methodological approach to object modelling in the architectural designprocess
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The paper describes a first prototype constructed in search for a central object model. It presents all possible data, concepts and operations concerning the architectural design process in the early phases.A central model of the process of design is essential: going from one design phase into another, the model describes geometrical shapes, abstract concepts like space and activity, concrete physical building elements and the basic operations all these entities undertake. Emphasis is put on combining all these different viewpoints, thus enabling the designer to use a broad range of design strategies. The aim is to help him and not steer or even hamper his creative process. Information necessary toassist the user of the system concerning energy calculation, stability checks etc can be extracted. By means of appropriate interfaces not only those tests built on top of the system but also existing software packages can make use of the model’s object structure. The implemented object model is one of the cornerstones of the IDEA+ project, aiming to provide an Integrated Design Environment for Architecture.
keywords	object model, building model, CAAD, IDEA+, MERODE
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9828
id	ddss9828
authors	Holmberg, Stig C.
year	1998
title	Anticipation in Evaluation and Assessment of Urban and Regional Plans
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	In order to start a move toward better computer based supporting tools for the assessment of urban and regional plans, a new research and development endeavour is proposed. In so doing, anticipation andanticipatory computing, i.e. a technique applying modelling and simulation, is found to be an interesting and promising point of departure. Hence, a fuzzy cellular automata computer model (STF) for simulation and anticipation of geographical or physical space is constructed. The main idea is to map anurban plan onto the STF for its assessing. STF has a normalised and continuous, i.e. fuzzy, system variable while both the time and space dimensions take on discrete values. Further, while ordinary cellularautomata use local rules, global ones are employed in STF, i.e. there is a total interdependence among all the cells of the automata. Outcomes of STF can be interpreted more as possible future states than exact predictions. Preliminary results seem to be well in line with main characteristics of planned urban or regional geographical spaces. Further, for the managing of multi-criteria choice situations, a fuzzy procedure – the Ordered Weighted Average (OWA) procedure – with continuous control over the degree of ANDOR-ness and with independent control over the degree of tradeoff, is proposed.
keywords	Geographical space, Anticipatory Computing, Cellular Automata, Spatio Temporal Fuzzy Model (STF)
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9831
id	ddss9831
authors	Kellett, Ronald and Girling, Cynthia
year	1998
title	Informing Public Participation in Neighborhood ScalePlanning and Design
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Neighborhood scale planning and design in many areas of the United States has been evolving toward a system of negotiated priorities and agreements. Common models include public workshops and design 'charrettes' which bring diverse stakeholders (citizens, land owners, developers, consultantsand public officials, for example) together to develop a mutually acceptable plan. Crucial to the quality and effectiveness of the outcome are decision support tools that help this diverse audience understand, communicate, collaborate and make decisions about complex and often emotional issuesof land use and design. Net Energy Communities (NEC), the project summarized in this paper, creates a suite of computer based tools for this purpose. NEC links three types of computer software — the spatial data manipulation, modeling and visualization capabilities of Geographic Information Systems (GIS), the illustration and information retrieval capabilities of multimedia relational databases and, the simulation and comparison capabilities of spreadsheet-based calculation models;into four tools — a site modeller, an elements of neighborhood database, a scenario modeller and ascenario calculator. This paper reports on the NEC project as an example of decision support tools for public participation using illustrations and examples from a 420 acre demonstration neighborhood design in progress for the City of Corvallis, Oregon, USA.
series	DDSS
last changed	2003/08/07 16:36

_id	ddss9839
id	ddss9839
authors	Mahdavi, Ardeshir
year	1998
title	A Middle Way to Integration
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	Integration in computer-aided design denotes systematic incorporation of multiple domain applications within a unified computational design support environment. At one end of the spectrum of integration efforts, there is a top-down approach involving an all-encompassing maximal building representation. On the other end, there is bottom-up approach involving the ad hoc and as-needed production of translator and mediator routines to enable various existing applications to communicate with each other. This paper describes the development of a design support system which represents a middle way to integration: while it assumes that, at a fundamental level, some shared notation of the constitutive building entities and their spatial relationships is sine qua non, it assumes that this notation is not a primary necessity, but must be tested against the requirements of the "down-the-line" manipulators of the entities encapsulated by it.
series	DDSS
last changed	2003/08/07 16:36

_id	650c
authors	Porada, S.
year	1998
title	Ouvoir - Of the Potential Architecture
source	Cyber-Real Design [Conference Proceedings / ISBN 83-905377-2-9] Bialystock (Poland), 23-25 April 1998, pp. 155-161
summary	Calculations are used to forecast urban flows of population, development of various activities, demography, and many other architectural programme constrains, and have been spontaneously the first field of computer intervention in urban and architectural project design. By analogy to engineering where computation is the base of decision making, architectural design process is seen as a problem solving process. <> constrains computer aided computation is seen as Computer Aided Architectural Design, CAAD. This way, a technological utopia called CAD in architecture is born. Nevertheless, the review of architectural design methods has clearly shown that programmatic models, since they are only used to evaluate spatial hypothesis, and do not have in themselves space production potentialities. In spite of the powerful methodological movement of the sixties, that have established this design constellation, the misunderstanding persists until now. Architect is a gestural and visual being. By using simultaneously metaphor, gesture and calculation, he calls for all his experiences and sensibility to realise plastic and poetic synthesis of form. To remedy to the major problem of the form synthesis, graphical instruments have been proposed. Why not utilise tools used in the field of engineering as computer aided drafting ? And so, computer aided drafting triumphaly entered the architectural design process. But, computer aided drafting is commonly seen as an instrument used on the - projection - stage, where drawings are produced for an already designed object. A new myth that assimilate architectural design to the drawing production activity arrives with the <>, containing thousands of drawings. All this aimed to facilitate, as it is proclaimed, communication between all the intervening in the project.
series	plCAD
last changed	1999/04/08 17:16

_id	ddss9855
id	ddss9855
authors	Spinelli, Juçara and Krafta, Romulo
year	1998
title	Urban Land Value Distribution UnderConfigurational Scrutiny
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	In the present study were evaluated land parceling problems under aspects of spatial configuration related to land value (lv). Paradoxical cases occur in urban spaces, such as low spatial differentiation and high lv, or vice-versa. Determined urban areas are identified as having high centrality, with intense land use and occupation, and, therefore, high market value. Conversely, other urban areas are identified as having low centrality value, certain degradation, or lack of infrastructure and urban equipment, and, consequently, low lv. Empirical studies have proved satisfactory results interms of the correlation between measures of configuration and lv. These studies verify the convenience of the models used to describe significant aspects of spatial differentiation. The complementation of the methodological proposal is identified, and other components of urban space are calculated (plot dimension, infrastructure, normative aspects, etc.). These are determinant measures that characterize the local factor associated with measures that determine the morphological differentiation.This differentiation demonstrated that land value distribution, besides following centrality, depends, in greater or lesser extent, on the local factor. The results obtained, through a model that combines measures of centrality with local characteristics, approached reality because the model incorporated a greater number of variables which allowed the verification of correlated socioeconomic and spatial matters related to parceling, value, and configuration.
series	DDSS
email
last changed	2003/08/07 16:36

_id	ddss9862
id	ddss9862
authors	Vries, B. de and Jessurun, A.J.
year	1998
title	An experimental design system for the veryearly design stage
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	The concepts of the experimental design system that are discussed are feature modeling and geometrical constraints. The main technique for creating the user environment is Virtual Reality. Feature modeling forms the basis for managing the design data. To start with, data storage is implemented in a Relational Data Base Management System. Alongwith this a (traditional) interface is developed for managing the data. Data management consists of feature type creation and feature type instancing. Features are used to define building elements, their relationships and additional constraints. Apart from the design data, geometrical data are stored. Possible design solutions can be limited using geometrical constraints. Specifying connection types between building elements result in a set of solutions for the position of the bounding boxes of the building elements in space.
series	DDSS
last changed	2003/08/07 16:36

_id	88f5
authors	Matalasow, M.E.
year	1998
title	Once More on the Role of Different Methods and Means of the Analysis
source	Cyber-Real Design [Conference Proceedings / ISBN 83-905377-2-9] Bialystock (Poland), 23-25 April 1998, pp. 127-140
summary	The correct evaluation of design proposals both by experts and future users, demands their presentation with regard to the real environment and real conditions of observation. It is interesting when analysing designs in complicated town planning situations, and becomes especially important in CIVILIZED SOCIETIES, when it concerns historic territories. Analytical works, connected with preparation of the information, corresponding in the greatest degree to the real conditions and previous scientific investigations, are carried out in a number of European educational institutions (Technical universities in Delft, Tampere, Stuttgart, etc.), corresponding to the Laboratory of videosystems of the Moscow Architectural Institute (State Academy). Their results are periodically reported at conferences of the European Architectural Endoscopy Association, which in keeping with its name and status is occupied with problems of the most real reflection of the designed space. I suppose that due to the objective necessity at our future conference (the 4th conference of the EAEA) we shall discuss not tools, but methods and ways ensuring correct vision of the designed space. Because of this and the present state of the technique of presentation and also recollecting my words at the previous conferences, that technical means are only tools but not an ideology of the creative activities in designing, it is reasonable once more (or maybe not once) to return to the "accompanying" means, which sometimes, and in a historical environment, i want to underline again, in a CIVILIZED SOCIETY, can and must become decisive. And it is especially important for the simulation means to take into consideration spatial and temporal factors.
series	EAEA
more	http://info.tuwien.ac.at/eaea
last changed	2005/09/09 10:43

_id	59
authors	Ozel, Filiz
year	1998
title	Geometric Modeling intThe Simulation of Fire - Smoke Spread in Buildings
source	II Seminario Iberoamericano de Grafico Digital [SIGRADI Conference Proceedings / ISBN 978-97190-0-X] Mar del Plata (Argentina) 9-11 september 1998, pp. 438-445
summary	Since the performance simulation of buildings, such as fire/smoke spread, energy loss/gain, acoustics, etc. greatly rely on building geometry, the way the physical environment is modeled can substantially effect the reliability of the predictions made by such simulations. Most computer models that simulate fire and smoke spread in buildings limit the computer representation of the building to simpler geometries and define rooms as rectangular spaces or as spaces with uniform crossections. Such a definition does not account for the variety of building elements that can exist in a building such as large overhangs, half height walls, etc. Existing simulations are typically developed as mathematical models and use the principles of thermodynamics to represent the spread of the elements of fire through space over a given time period. For example, in zone models each room is defined as a two tier space with heat and smoke exchange between lower and upper tiers as the fire progresses. On the other hand, field models divide the space into small contiguous units where thermodynamic state of each unit is calculated as the simulated fire progresses. Dynamic processes such as fire and smoke spread must recognize both intangible (i.e. voids) and tangible (i.e. solids such as walls, balconies, ceiling, etc.) architectural entities. This paper explores the potential of solid modeling techniques in generating geometric definitions for both solid and void architectural entities that can interact With mathematical models of fire/smoke spread in buildings. The implications of cellular spatial partitioning techniques for zone or field models of fire/smoke spread are investigated, and the methods of creating cellular decomposftion models for architectural spaces as well as for spatial boundaries such as walls are explored. The size of each cellular partition, i.e. the resolution of the partition, and the material and heat transfer attributes of each cell were found to be very critical in modeling the spread fire through voids as well as through solids in a building.
series	SIGRADI
email
last changed	2016/03/10 09:57

_id	ddss9802
id	ddss9802
authors	Akin, O., Aygen, Z., Cumming, M., Donia, M., Sen, R. and Zhang, Y.
year	1998
title	Computational Specification of Building Requirements in theEarly Stages of Design
source	Timmermans, Harry (Ed.), Fourth Design and Decision Support Systems in Architecture and Urban Planning Maastricht, the Netherlands), ISBN 90-6814-081-7, July 26-29, 1998
summary	We have been exploring computational techniques to help building designers to specify design requirements during the early stages of design. In the past, little has been accomplished in this area either in terms of innovative computational technologies or the improvement of design performance.The prospect of improving design productivity and creating a seamless process between requirements specification and formal design are our primary motivations. This research has been conducted as partof a larger project entitled SEED (Software Environment to Support Early Phases in Building Design). SEED features an open-ended modular architecture, where each module provides support for a design activity that takes place in early design stages. Each module is supported by a database to store and retrieve information, as well as a user interface to support the interaction with designers. The module described in this paper, SEED-Pro (the architectural programming module of SEED), is a workingprototype for building design requirements specification. It can be used by other modules in SEED or by design systems in other domains, such as mechanical engineering, civil engineering, industrial designand electrical engineering. Our approach to SEED-Pro is divided into two phases: core, and support functionalities. The core functionalities operate in an interactive mode relying on a case-based approach to retrieve and adapt complex specification records to the problem at hand. The supportfunctionalities include the case-base, the data-base, and the standards processing environment for building specification tasks. Our findings indicate that SEED-Pro: (1) is a tool that structures the unstructured domain of design requirements; (2) enables the integration of design requirements with the rest of the design process, (3) leads to the creation of complex case-bases and (4) enables the observation of their performance in the context of real world design problems.
series	DDSS
last changed	2003/11/21 15:15

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