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	caadria2007_057
id	caadria2007_057
authors	Kouide, Tahar; G. Paterson
year	2007
title	BIM as a Viable Collaborative Working Tool: A Case Study
source	CAADRIA 2007 [Proceedings of the 12th International Conference on Computer Aided Architectural Design Research in Asia] Nanjing (China) 19-21 April 2007
doi	https://doi.org/10.52842/conf.caadria.2007.x.l1j
summary	For the majority of design practices in the construction industry the use of CAD systems have been used to merely automate hand drafting (Cohen 2003). This is the traditional way of working that has changed very little since the introduction of commercial CAD systems. These practices as means of communication are being replaced by a virtual building model environment which encapsulates all of the information for an entire construction project and thereby enables computer-supported co-operative working practices. (Newton 2003) This study aims to determine whether Building Information Modelling (BIM) can, and whether it will, replace traditional communication media as the standard in the industry for computersupported co-operative working practices in the Architecture Engineering and construction (AEC) sector. The bulk of the research comprises an extensive literature review looking at the principal reasons behind the development of BIM, the potential advantages and drawbacks of the technology, and the barriers and obstacles which inhibit its adoption as a means of computer-supported co-operative working. The findings of the study have been validated and analysed against current practice in the field through a live case study analysis of the on-going Heathrow airport Terminal 5 Project in London (UK). The Terminal 5 case study demonstrates that present software tools, although usable, still present significant implicit technical constraints to wider implementation among Small and Medium Enterprises (SMEs). The case study has also shown that in practice, the success of BIM depends just as much on the working practices and ethos of participants in the project chain as it does on the capabilities of the software itself, in particular the willingness of practitioners to change traditional working practices. The case study has shown that the present investment, in terms of time, cost, and effort required to implementing the technology means that BIM is unlikely to be adopted on small simple projects where conventional CAD is still adequate. It also highlighted that BIM tools currently available are not yet adequately developed to satisfy the requirements of the many procurement and especially contractual arrangements which presently exist and many firms will be frightened off by the unresolved legal issues which may arise from implementing BIM in their practices.
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	cf2003_m_059
id	cf2003_m_059
authors	YANG, Qizhen and CUI, Lu
year	2003
title	Interoperable and Extensible Design Information Modelling
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 93-104
summary	Modelling of interoperable and extensible design information is one of the key issues in computer-aided architectural design. IFC technology provides standardised mechanisms for the development of such information models. By using the IFC dynamic definition extension mechanism this paper presents a method for IFC-compliant design information modelling for architectural CAD objects. The method has been implemented as an addon toolkit to the Architectural Desktop CAD package. The use scenarios of the toolkit are discussed in the paper for CAD property modelling, property database management, and interoperable design information modelling with property set extensions.
keywords	IFC, information modelling, interoperability
series	CAAD Futures
last changed	2003/09/22 12:21

_id	caadria2003_a7-1
id	caadria2003_a7-1
authors	Chantawit, D. and Hadikusumo, B.H.W.
year	2003
title	Integrated 4d Cad and Construction Safety Planning Information for a Better Safety Management
source	CAADRIA 2003 [Proceedings of the 8th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 974-9584-13-9] Bangkok Thailand 18-20 October 2003, pp. 891-904
doi	https://doi.org/10.52842/conf.caadria.2003.891
summary	Safety is an important element of project successes. In the conventional project management, safety planning, as a function, is separated from other functions, such as planning/scheduling function. This separation creates difficulties for engineers to analyze what, when, why and where a safety measure is needed to prevent accidents in a construction activity. Another problem occurs due to the conventional practice of representing project designs using two-dimensional (2D) drawings. In this practice, a user (e.g. an engineer) has to convert the 2D drawings into three-dimensional (3D) mental pictures, and this is a tedious task. If only converting this 2D drawing is a tedious task, combining these 2D drawings with safety planning creates more difficult tasks. In order to address the problems, this paper discusses our research in integrating construction scheduling and safety planning in a 4D environment.
series	CAADRIA
last changed	2022/06/07 07:55

_id	cf2003_m_006
id	cf2003_m_006
authors	ACHTEN, Henri and JESSURUN, Joran
year	2003
title	Learning From Mah Jong - Towards a Multi-Agent System that can Recognize Graphic Units
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 115-124
summary	Sketching is a major means of exploiting the first conceptual developments in architectural design. If we want to support the architect in the ideas-developing phase of design, then we need to understand the conventions of depiction and encoding in drawings. The theory of graphic units provides an extended list of such conventions that are widely used. We propose that a multi-agent system for recognition of graphic units in drawings is fruitful: agents can specialize in graphic units, a multi-agent system can deal with ambiguity through negotiation and conflict resolution, and multi-agent systems function in dynamically changing environments. We first make a multi-agent system that can do something simpler: playing Mah Jong solitary. The Mah Jong solitary system shares the following important features with a multi-agent system that can recognize graphic units: (1) specialized agents for moves; (2) negotiation between agents to establish the best move; (3) dynamically changing environment; and (4) search activity in more advanced strategies. The paper presents the theoretical basis of graphic units and multi-agents systems. The multi-agent framework and its implementation is presented. Various levels of game play are distinguished, and these are correlated to the multi-agent system. The paper shows how the findings form the basis for graphic unit recognition.
keywords	artificial intelligence, games, graphic units, agents
series	CAAD Futures
email
last changed	2003/11/22 16:39

_id	caadria2003_c2-4
id	caadria2003_c2-4
authors	Al-Sallal, Khaled A.
year	2003
title	Integrating Energy Design Into Caad Tools: Theoretical Limits and Potentials
source	CAADRIA 2003 [Proceedings of the 8th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 974-9584-13-9] Bangkok Thailand 18-20 October 2003, pp. 323-340
doi	https://doi.org/10.52842/conf.caadria.2003.323
summary	The study is part of a research aims to establish theoretical grounds essential for the development of user efficient design tools for energy-conscious architectural design, based on theories in human factors of intelligent interfaces, problem solving, and architectural design. It starts by reviewing the shortcomings of the current energy design tools, from both architectural design and human factor points of view. It discusses the issues of energy integration with design from three different points of view: architectural, problem-solving, and human factors. It evaluates theoretically the potentials and limitations of the current approaches and technologies in artificial intelligence toward achieving the notion "integrating energy design knowledge into the design process" in practice and education based on research in the area of problem solving and human factors and usability concerns. The study considers the user interface model that is based on the cognitive approach and can be implemented by the hierarchical structure and the object-oriented model, as a promising direction for future development. That is because this model regards the user as the center of the design tool. However, there are still limitations that require extensive research in both theoretical and implementation directions. At the end, the study concludes by discussing the important points for future research.
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	sigradi2003_133
id	sigradi2003_133
authors	Armesto, T., Morín, A. and Premern, C.
year	2003
title	Hacia una RV de Representación Hiperrealista (Towards a VR of Hyper-realistic Representation)
source	SIGraDi 2003 - [Proceedings of the 7th Iberoamerican Congress of Digital Graphics] Rosario Argentina 5-7 november 2003
summary	The objetive of the proyect is the hiperrealistic simulation of scenarios on standard PCs. We use the same tools that are used by the entertainment industry (3d graphics engines) to get the highest level of realism possible in 3d worlds. By now, we are exploring only the audio and visual areas. The potencial of this 3d enviorments construction tools let us to create exploration enviorments for academic and professional implementation like commerce, tourism, education, communication, etc.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	caadria2003_b4-2
id	caadria2003_b4-2
authors	Choi, Jin Won and Park, Jae Wan
year	2003
title	Developing a Building Design Compiler that Frequently evaluates Building Design Performance within the Design Process
source	CAADRIA 2003 [Proceedings of the 8th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 974-9584-13-9] Bangkok Thailand 18-20 October 2003, pp. 553-566
doi	https://doi.org/10.52842/conf.caadria.2003.553
summary	This paper demonstrates an experience in the development of a design performance evaluation system that can frequently evaluate building design performance within the design process in a real-time manner. The evaluation system, that we call "design compiler," is composed of several modules such as a front-end component-based CAD engine, a knowledge base, and a set of design agents. The notion of the design compiler is quite similar to a compiler for computer programming such as a C compiler. While a computer programmer compiles a set of programming codes to check compiling errors during the implementation of a software system, an architectural designer can 'compile' his/her intermediate design product to evaluate design errors during the design process. The compilation can be done immediately at any level or any time during the design process in a real-time manner. We expect that this compiling process will dramatically increase design feedbacks, and thus result in a better design product. Further research issues that have been identified at the end of the research include increasing the modeling capability, extending to multi-story building representation, developing various design agents, exploring better ways to request and manage design knowledge, and supporting design collaboration.
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	cf2003_m_046
id	cf2003_m_046
authors	HWANG, Jie-Eun and CHOI, Jin-Won
year	2003
title	SpaceScope: Spatial Content-Based Retrieval of Architectural Floor Plans
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 53-62
summary	This research investigates spatial information retrieval in architecture, based on an efficient metadata that is crucial for content-based retrieval. SpaceCore is the metadata schema for spatial information on a floor plan implemented with RDF (Resource Description Framework). To generate metadata, we analyse the factors of spatial information, and then construct a data model containing the content and structure of spatial information. To exploit the metadata, we suggest various query operations with possible predicates and interfaces. SpaceScope, the spatial information retrieval system, consists of three modules: an input data module, a query module, and a browse module. As to implementation, we have already developed the real time plan-structuring system, called “Vitruvius”, as an inputting and modelling data module (using C++). Based on the database, the system performs the similarity analysis and then evaluates the alternative plans with the retrieval goals. At the end of the paper we discuss the potential of SpaceScope in the schematic design stage of the architectural design process, possibly improving and triggering the designer’s conceptual approach against a logical background and facilitate rapid decision-making after full consideration.
keywords	case-based reasoning, content-based retrieval, metadata, RDF, semantic
series	CAAD Futures
last changed	2003/09/22 12:21

_id	ecaade03_260_02_nardi
id	ecaade03_260_02_nardi
authors	Nardini, Marco
year	2003
title	Avant-garde techniques in contemporary design - New tools or new languages for the project?
source	Digital Design [21th eCAADe Conference Proceedings / ISBN 0-9541183-1-6] Graz (Austria) 17-20 September 2003, pp. 261-264
doi	https://doi.org/10.52842/conf.ecaade.2003.261
summary	In this paper it is argued that new digital techniques join together several skills; from CAD (Computer Aided Design), to CAE (Computer Aided Engineering), till CAM (Computer Aided Manufacturing). That assemblage of methods involves a change in the way to achieve a project. The idea comes out as result of connected actions within software-hardware tools. According to this analysis the implementation of gradients (e.g. movement, time, direction) have a significant role in shaping a multi-disciplinary approach to design; supported by simulation as way to verify and control solutions. Such innovations can settle a new way to design, in terms of vocabulary, grammar and syntax? How can we develop useful tools to express the ""new visible"" of avant-garde techniques?
keywords	Avant-garde techniques, simulation, complexity, new visible, immaterial,parametric design
series	eCAADe
email
more	http://ecologo.3go.it
last changed	2022/06/07 07:58

_id	cf2003_m_092
id	cf2003_m_092
authors	NG, E., CHAN, T.Y., LEUNG, R. and PANG, P.
year	2003
title	A Daylight Design and Regulatory Method for High-Density Cities Using Computational Lighting Simulations
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 339-350
summary	Hong Kong is the most densely populated city in the world. Design of buildings in urban Hong Kong is regulated by the Building (Planning) regulations of the Government. This piece of law is over 40 years old and has been proven to be inadequate. This paper introduces a new simplified method, the Unobstructed Vision Area Method (UVA), for daylight design in high-density cities. The method was developed based on empirical and theoretical formulation as well as extensive validation and studies using computational simulations. The paper highlights the steps necessary to apply computational methods for law making, the difficulties and possibilities in the process, as well as the practical and implementation of adopting computational results and techniques in everyday practical life of the architect and the controlling agency. The Government of Hong Kong has recently adopted the UVA method.
keywords	regulations, city, daylighting, simulation
series	CAAD Futures
last changed	2003/09/22 12:21

_id	cf2003_m_110
id	cf2003_m_110
authors	OXMAN, Rivka
year	2003
title	Designing the Virtual Design University
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 291-300
summary	Universities are currently providing learning opportunities to students and teachers exploiting information and communication technologies to deliver their programs and provide tuition support. However, since architectural design education is unique, general models of e-learning are not applicable. Regarding a potential virtual design university there is therefore a particular need for a theoretical pedagogical framework. The objective of this paper is to present a theoretical basis for the design and implementation of a unique e-learning environment suitable for design learning and design teaching in the architectural and engineering domains. The ideas and the concepts are currently being implemented in the WINDS project. Three theoretical and methodological aspects that provide unique consideration for the construction of a virtual learning environment for design are presented and discussed: 1) A unique structure of design knowledge as required in virtual education; 2) A requisite pedagogic framework for virtual design education; and 3) A particular technology designed and implemented to support these aspects in WINDS.
keywords	design pedagogy, e-learning, virtual university
series	CAAD Futures
email
last changed	2003/09/22 12:21

_id	fd5a
authors	Snizek, Bernhard
year	2003
title	3dkroner.dk – An interactive, web based 4D public participation tool
source	CORP 2003, Vienna University of Technology, 25.2.-28.2.2003 [Proceedings on CD-Rom]
summary	In an intensive workshop from November 11th to November 18th 2002, five teams consisting of members of architectural offices, artists, planners, developers, citizens & students came forward with a series of ideas & designs at urban & landscape level for Trekroner Øst, a new neighbourhood in Roskilde, Denmark.. 3dkroner.dk1, an interactive, web based 4D public participation tool (PPT) was created and used for communicating the workshop’s results to a broader public on the one hand, and to start a two way communication process between planners and citizens on the other hand. In this paper I will rather describe the tool’s development, its implementation in the workshop and the experiences the project team made from this process than discuss public participation tools in general.
series	other
email
more	http://www.metascapes.dk
last changed	2003/03/11 20:39

_id	sigradi2003_069
id	sigradi2003_069
authors	Vasquez de Velasco, Guillermo and Viswanadha, Kameshwari
year	2003
title	The Use of VR Technology in the Assessment of Applicants to Graduate Schools of Architecture
source	SIGraDi 2003 - [Proceedings of the 7th Iberoamerican Congress of Digital Graphics] Rosario Argentina 5-7 november 2003
summary	Schools of architecture in North, Central and South America offer admissions on the basis of grade point average and standardized exams on academic aptitude. These indicators may describe the aptitude of students as far as general academic performance is concerned but are limited on describing the creative potential of the applicant. The authors of this paper question this practice and suggest the development of a 3dimensional environment for the assessment of the creative aptitude of future students. The paper also describes the implementation of a prototype of the testing environment and subsequent experimentation.
keywords	VRML, cognition, skills, testing, admissions
series	SIGRADI
email
last changed	2016/03/10 10:02

_id	792a
authors	Blaschke, Thomas and Tiede, Dirk
year	2003
title	Bridging GIS-based landscape analysis/modelling and 3D-simulation.Is this already 4D?
source	CORP 2003, Vienna University of Technology, 25.2.-28.2.2003 [Proceedings on CD-Rom]
summary	Several studies have used remote sensing to map patterns of e.g. deforestation or to analyse the rates of land use change. Thesestudies have proven useful for interpreting the causes of urbanization, deforestation etc. and the impact of such changes on theregion. Monitoring of change (e.g. deforestation or reforestation) is frequently perceived as one of the most important contributionsof remote sensing technology to the study of global ecological and environmental change (Roughgarden et al. 1991). Manyresearchers believe that the integration of remote sensing techniques within analysis of environmental change is essential if ecologistsare to meet the challenges of the future, specifically issues relating to global change; however, in practice, this integration has so farbeen limited (Griffiths & Mather 2000). Considerable difficulties are encountered in linking, on the one hand, the biologies oforganisms and the ecologies of populations to the fluxes of material and energy quantifiable at the level of ecosystems. In this paper,we concentrate on the methodological aspects of the delineation of landscape objects and touch the ecological application onlysuperficially but we elucidate the potential of the proposed methodology for several ecological applications briefly.
series	other
email
last changed	2003/11/21 15:16

_id	cf2011_p157
id	cf2011_p157
authors	Boton, Conrad; Kubicki Sylvain, Halin Gilles
year	2011
title	Understanding Pre-Construction Simulation Activities to Adapt Visualization in 4D CAD Collaborative Tools
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. 477-492.
summary	Increasing productivity and efficiency is an important issue in the AEC field. This area is mainly characterized by fragmentation, heterogeneous teams with low lifetimes and many uncertainties. 4D CAD is one of the greatest innovations in recent years. It consists in linking a 3D model of the building with the works planning in order to simulate the construction evolution over time. 4D CAD can fill several needs from design to project management through constructivity analysis and tasks planning (Tommelein 2003). The literature shows that several applications have been proposed to improve the 4D CAD use (Chau et al. 2004; Lu et al. 2007; Seok & al. 2009). In addition, studies have shown the real impact of 4D CAD use in construction projects (Staub-French & Khanzode 2007; Dawood & Sika 2007). More recently, Mahalingam et al. (2010) showed that the collaborative use of 4D CAD is particularly useful during the pre-construction phase for comparing the constructability of working methods, for visually identifying conflicts and clashes (overlaps), and as visual tool for practitioners to discuss and to plan project progress. So the advantage of the 4D CAD collaborative use is demonstrated. Moreover, several studies have been conducted both in the scientific community and in the industrial world to improve it (Zhou et al. 2009; Kang et al. 2007). But an important need that remains in collaborative 4D CAD use in construction projects is about the adaptation of visualization to the users business needs. Indeed, construction projects have very specific characteristics (fragmentation, variable team, different roles from one project to another). Moreover, in the AEC field several visualization techniques can represent the same concept and actors choose one or another of these techniques according to their specific needs related to the task they have to perform. For example, the tasks planning may be represented by a Gantt chart or by a PERT network and the building elements can be depicted with a 3D model or a 2D plan. The classical view (3D + Gantt) proposed to all practitioners in the available 4D tools seems therefore not suiting the needs of all. So, our research is based on the hypothesis that adapting the visualization to individual business needs could significantly improve the collaboration. This work relies on previous ones and aim to develop a method 1) to choose the best suited views for performed tasks and 2) to compose adapted multiple views for each actor, that we call ‚Äúbusiness views‚Äù. We propose a 4 steps-method to compose business views. The first step identifies the users‚Äô business needs, defining the individual practices performed by each actor, identifying his business tasks and his information needs. The second step identifies the visualization needs related to the identified business needs. For this purpose, the user‚Äôs interactions and visualization tasks are described. This enables choosing the most appropriate visualization techniques for each need (step 3). At this step, it is important to describe the visualization techniques and to be able to compare them. Therefore, we proposed a business view metamodel. The final step (step 4) selects the adapted views, defines the coordination mechanisms and the interaction principles in order to compose coordinated visualizations. A final step consists in a validation work to ensure that the composed views really match to the described business needs. This paper presents the latest version of the method and especially presents our latest works about its first and second steps. These include making more generic the business tasks description in order to be applicable within most of construction projects and enabling to make correspondence with visualization tasks.
keywords	Pre-construction, Simulation, 4D CAD, Collaboration, Computer Supported Cooperative Work, Human-Computer Interface, Information visualization, Business view, Model driven engineering
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	acadia03_039
id	acadia03_039
authors	Clayton, Mark J.
year	2003
title	Connecting Digital Tools
source	Connecting >> Crossroads of Digital Discourse [Proceedings of the 2003 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-12-8] Indianapolis (Indiana) 24-27 October 2003, p. 299
doi	https://doi.org/10.52842/conf.acadia.2003.x.p0b
summary	A decade ago, Bill Mitchell wrote “Chroniclers of our era may one day write ‘What was computer-aided design?’ To them, it will just be design.” Because of the proliferation of digital tools for design, we are rapidly forgetting that there was ever design before computing. Ask an undergraduate student to describe the design process. There is a good chance that the student will mention using CAD and 3D modeling. Ask a contractor how to practice the profession of building.
series	ACADIA
email
last changed	2022/06/07 07:49

_id	cf2003_m_034
id	cf2003_m_034
authors	DING, L, LIEW, P.-S., MAHER, M.-L., GERO, J.S. and DROGEMULLER, R.
year	2003
title	Integrating CAD and 3D Virtual Worlds Using Agents and EDM
source	Digital Design - Research and Practice [Proceedings of the 10th International Conference on Computer Aided Architectural Design Futures / ISBN 1-4020-1210-1] Tainan (Taiwan) 13–15 October 2003, pp. 301-312
summary	This paper develops an overall architecture for integrating CAD and virtual worlds. The advantages of having access to the building model in a virtual world include the collaborative nature of the world. The EDM database as an object-oriented database is developed to establish a common object-oriented representation of building model, which can be accessed by both CAD systems and virtual worlds. The integration between CAD systems and an EDM database is implemented through the use of Industry Foundation Classes (IFCs) as an intermediate data model and the communication between the database and virtual worlds is developed through agents.
keywords	agents, IFC, virtual world
series	CAAD Futures
email
last changed	2003/09/22 12:21

_id	acadia03_026
id	acadia03_026
authors	Eastman, C., Lee, G. and Sacks, R.
year	2003
title	Development of a Knowledge-Rich CAD System for the North American Precast Concrete Industry
source	Connecting >> Crossroads of Digital Discourse [Proceedings of the 2003 Annual Conference of the Association for Computer Aided Design In Architecture / ISBN 1-880250-12-8] Indianapolis (Indiana) 24-27 October 2003, pp. 207-215
doi	https://doi.org/10.52842/conf.acadia.2003.207
summary	The downstream production sectors of the construction industry are developing powerful parametric modeling design and engineering tools for fabrication modeling. This paper reports an effort by the North American precast concrete industry toward developing such tools. Some implications for architectural design and practice are outlined.
series	ACADIA
email
last changed	2022/06/07 07:55

_id	sigradi2006_e028c
id	sigradi2006_e028c
authors	Griffith, Kenfield; Sass, Larry and Michaud, Dennis
year	2006
title	A strategy for complex-curved building design:Design structure with Bi-lateral contouring as integrally connected ribs
source	SIGraDi 2006 - [Proceedings of the 10th Iberoamerican Congress of Digital Graphics] Santiago de Chile - Chile 21-23 November 2006, pp. 465-469
summary	Shapes in designs created by architects such as Gehry Partners (Shelden, 2002), Foster and Partners, and Kohn Peterson and Fox rely on computational processes for rationalizing complex geometry for building construction. Rationalization is the reduction of a complete geometric shape into discrete components. Unfortunately, for many architects the rationalization is limited reducing solid models to surfaces or data on spread sheets for contractors to follow. Rationalized models produced by the firms listed above do not offer strategies for construction or digital fabrication. For the physical production of CAD description an alternative to the rationalized description is needed. This paper examines the coupling of digital rationalization and digital fabrication with physical mockups (Rich, 1989). Our aim is to explore complex relationships found in early and mid stage design phases when digital fabrication is used to produce design outcomes. Results of our investigation will aid architects and engineers in addressing the complications found in the translation of design models embedded with precision to constructible geometries. We present an algorithmically based approach to design rationalization that supports physical production as well as surface production of desktop models. Our approach is an alternative to conventional rapid prototyping that builds objects by assembly of laterally sliced contours from a solid model. We explored an improved product description for rapid manufacture as bilateral contouring for structure and panelling for strength (Kolarevic, 2003). Infrastructure typically found within aerospace, automotive, and shipbuilding industries, bilateral contouring is an organized matrix of horizontal and vertical interlocking ribs evenly distributed along a surface. These structures are monocoque and semi-monocoque assemblies composed of structural ribs and skinning attached by rivets and adhesives. Alternative, bi-lateral contouring discussed is an interlocking matrix of plywood strips having integral joinery for assembly. Unlike traditional methods of building representations through malleable materials for creating tangible objects (Friedman, 2002), this approach constructs with the implication for building life-size solutions. Three algorithms are presented as examples of rationalized design production with physical results. The first algorithm [Figure 1] deconstructs an initial 2D curved form into ribbed slices to be assembled through integral connections constructed as part of the rib solution. The second algorithm [Figure 2] deconstructs curved forms of greater complexity. The algorithm walks along the surface extracting surface information along horizontal and vertical axes saving surface information resulting in a ribbed structure of slight double curvature. The final algorithm [Figure 3] is expressed as plug-in software for Rhino that deconstructs a design to components for assembly as rib structures. The plug-in also translates geometries to a flatten position for 2D fabrication. The software demonstrates the full scope of the research exploration. Studies published by Dodgson argued that innovation technology (IvT) (Dodgson, Gann, Salter, 2004) helped in solving projects like the Guggenheim in Bilbao, the leaning Tower of Pisa in Italy, and the Millennium Bridge in London. Similarly, the method discussed in this paper will aid in solving physical production problems with complex building forms. References Bentley, P.J. (Ed.). Evolutionary Design by Computers. Morgan Kaufman Publishers Inc. San Francisco, CA, 1-73 Celani, G, (2004) “From simple to complex: using AutoCAD to build generative design systems” in: L. Caldas and J. Duarte (org.) Implementations issues in generative design systems. First Intl. Conference on Design Computing and Cognition, July 2004 Dodgson M, Gann D.M., Salter A, (2004), “Impact of Innovation Technology on Engineering Problem Solving: Lessons from High Profile Public Projects,” Industrial Dynamics, Innovation and Development, 2004 Dristas, (2004) “Design Operators.” Thesis. Massachusetts Institute of Technology, Cambridge, MA, 2004 Friedman, M, (2002), Gehry Talks: Architecture + Practice, Universe Publishing, New York, NY, 2002 Kolarevic, B, (2003), Architecture in the Digital Age: Design and Manufacturing, Spon Press, London, UK, 2003 Opas J, Bochnick H, Tuomi J, (1994), “Manufacturability Analysis as a Part of CAD/CAM Integration”, Intelligent Systems in Design and Manufacturing, 261-292 Rudolph S, Alber R, (2002), “An Evolutionary Approach to the Inverse Problem in Rule-Based Design Representations”, Artificial Intelligence in Design ’02, 329-350 Rich M, (1989), Digital Mockup, American Institute of Aeronautics and Astronautics, Reston, VA, 1989 Schön, D., The Reflective Practitioner: How Professional Think in Action. Basic Books. 1983 Shelden, D, (2003), “Digital Surface Representation and the Constructability of Gehry’s Architecture.” Diss. Massachusetts Institute of Technology, Cambridge, MA, 2003 Smithers T, Conkie A, Doheny J, Logan B, Millington K, (1989), “Design as Intelligent Behaviour: An AI in Design Thesis Programme”, Artificial Intelligence in Design, 293-334 Smithers T, (2002), “Synthesis in Designing”, Artificial Intelligence in Design ’02, 3-24 Stiny, G, (1977), “Ice-ray: a note on the generation of Chinese lattice designs” Environmental and Planning B, volume 4, pp. 89-98
keywords	Digital fabrication; bilateral contouring; integral connection; complex-curve
series	SIGRADI
email
last changed	2016/03/10 09:52

_id	caadria2003_c3-4
id	caadria2003_c3-4
authors	Maneesatid, Preecha and Szalapaj, Peter
year	2003
title	The Role of CAD in Environmental Building Science
source	CAADRIA 2003 [Proceedings of the 8th International Conference on Computer Aided Architectural Design Research in Asia / ISBN 974-9584-13-9] Bangkok Thailand 18-20 October 2003, pp. 487-502
doi	https://doi.org/10.52842/conf.caadria.2003.487
summary	The fundamental requirement of all building design is the provision of shelter from the external climate and, if possible, the modification of environmental factors generated by this climate to create an internal environment suitable for human comfort. The environmental design strategies of modifying climate derive from the requirements of creating human comfort in buildings, using the elements of the natural climate which vary throughout the year depending upon the prevailing climatic conditions. Environmental Building Science (EBS) research and practice has investigated various techniques to increase architects' performance in environmental building design. These technical design options are also available to architects to take advantage of the external environment. Most environmental design techniques rely on convectional forms of passive environmental design, and building material and system. But it hardly begins to address the more complex demands of environmental building design issues in the buildings. Particularly, testing environmental design techniques against physical models requires much input data which is not available in the early design stages, and is time consuming to use. This forces architects to work with many design parameters that are not compatible with their activities. It is consequently difficult to observe the interrelation of design techniques with design development. The most important role of Computer Aided Design (CAD) is to integrate wider varieties of input data requirements, modelling with EBS properties, output representations with EBS knowledge and assistance tools for optimisation tasks in environmental design issues.
series	CAADRIA
email
last changed	2022/06/07 07:59

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