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

PDF papers
References

Hits 1 to 20 of 557

Reformat results as: short short into frame detailed detailed into frame

_id	ecaade2007_066
id	ecaade2007_066
authors	Boeykens, Stefan; Neuckermans, Herman
year	2007
title	A Generic Data Structure for an Architectural Design Application
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 303-310
doi	https://doi.org/10.52842/conf.ecaade.2007.303
summary	The research described in this paper focuses on the exploration of concepts for design development, to increase support for the early phases of design. This paper investigates and describes how a custom data structure for an architectural design application was set up generically, allowing additional extensions in a straightforward manner. The key concepts and main functionality are presented here, to give insight into the reasoning behind a flexible property system and how additional functionality benefits from this system.
keywords	Design, software development, property system
series	eCAADe
email
last changed	2022/06/07 07:52

_id	acadia07_268
id	acadia07_268
authors	Cantrell, Bradley E.
year	2007
title	Ambient Space
source	Expanding Bodies: Art • Cities• Environment [Proceedings of the 27th Annual Conference of the Association for Computer Aided Design in Architecture / ISBN 978-0-9780978-6-8] Halifax (Nova Scotia) 1-7 October 2007, 268-275
doi	https://doi.org/10.52842/conf.acadia.2007.268
summary	An exploration of streetscape lighting that responds to site phenomena provides a basis to explore the abilities of sensor driven devices to construct landscape form. The project expresses multiple reactive spaces through a hypothetical design project on Pine Street in New York City. The landscape is the input using the variables of wind, sound, motion, and light in order to focus, open, lower, and contract each lighting device. As the landscape progresses throughout the day, season, and/or year, various relationships are created in form and light to organize spaces on multiple scales. Data becomes the armature for scripted reactions allowing the infrastructure to respond for safety or efficiency. With the proliferation of sensor networks and sensor systems, the possibilities arise for the re-articulation of data expression. The single lighting device works within a network that is connected by the specifi c phenomenology of the site. The project is grounded historically in the landscape folly, an architectural device that is not what it appears to be (Figure 1).
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:54

_id	ascaad2007_043
id	ascaad2007_043
authors	Chen, G.-Y. M.
year	2007
title	Tagging Your Body Virtually : Represent a place making process with social network
source	Em‘body’ing Virtual Architecture: The Third International Conference of the Arab Society for Computer Aided Architectural Design (ASCAAD 2007), 28-30 November 2007, Alexandria, Egypt, pp. 543-558
summary	This research focuses on the virtual environment of place making. In this paper we would like to emphasize that the place making should be stressed collective views in order to obtain the design application of possibilities. However, in past researches there has been no study that tried to collect the collective views by digital ways. Accordingly, this paper proposes a response thought the Spatial Intention. It could be used to represent the human of body experience. The "moving" and "standing" are appropriate to two main considerations. Both of these could be connected to the action of "focus" and "choice." these leads to a sequential relationship of place production. The positive significance of the spatial intention lies in the convertibility of physical experience could be implied with a specific understanding. It also could be used to mold the place of knowledge structure. Thereby in order to verify the reliability of the above, we made a social network of virtual environment and used the rapid prototyping method to develop a prototype system. Implementing on the Chinese garden of the actual case, we found that the tag could concentrate as an entire sense in somewhere of place. These tags also could be shared remotely through the social network. Different tags in the sharing mechanism could collage out a place of collective views. This perspective would be used to assist designers to understand the sense of place. It also would be applied to find out the environmental design of possibilities in the future studies.
series	ASCAAD
email
last changed	2008/01/21 22:00

_id	ecaadesigradi2019_397
id	ecaadesigradi2019_397
authors	Cristie, Verina and Joyce, Sam Conrad
year	2019
title	'GHShot': a collaborative and distributed visual version control for Grasshopper parametric programming
source	Sousa, JP, Xavier, JP and Castro Henriques, G (eds.), Architecture in the Age of the 4th Industrial Revolution - Proceedings of the 37th eCAADe and 23rd SIGraDi Conference - Volume 3, University of Porto, Porto, Portugal, 11-13 September 2019, pp. 35-44
doi	https://doi.org/10.52842/conf.ecaade.2019.3.035
summary	When working with parametric models, architects typically focus on using rather structuring them (Woodbury, 2010). As a result, increasing design complexity typically means a convoluted parametric model, amplifying known problems: 'hard to understand, modify, share and reuse' (Smith 2007; Davis 2011). This practice is in contrast with conventional software-programming where programmers are known to meticulously document and structure their code with versioning tool. In this paper, we argue that versioning tools could help to manage parametric modelling complexity, as it has been showing with software counterparts. Four key features of version control: committing, differentiating, branching, and merging, and how they could be implemented in a parametric design practice are discussed. Initial user test sessions with 5 student designers using GHShot Grasshopper version control plugin (Cristie and Joyce 2018, 2017) revealed that the plugin is useful to record and overview design progression, share model, and provide a fallback mechanism.
keywords	Version Control; Parametric Design; Collaborative Design; Design Exploration
series	eCAADeSIGraDi
email
last changed	2022/06/07 07:56

_id	c2f9
id	c2f9
authors	Friedrich E, Derix C and Hannah S
year	2007
title	Emergent Form from Structural Optimisation of the Voronoi Polyhedra Structure
source	Proceedings of the Generative Arts conference, Milan, 2007
summary	In the course of the exploration of computational means in the architectural design process, in order to investigate more complex, adaptive geometries, the Voronoi diagram has recently gained some attention, being a three-dimensional space-filling structure which is modular but not repetitive. The project looks at the Voronoi diagram as a load-bearing structure, and whether it can be useful for structural optimisation. Hereby the edges of the Voronoi polyhedra are regarded as structural members of a statical system, which then is assessed by structural analysis software. Results seem to indicate that the Voronoi approach produces a very specific structural as well as spatial type of order. Through the dislocation of the Voronoi cells, the statical structure becomes more complex through emergent topology changes, and the initially simple spatial system becomes much more complex thorough emerging adjacencies and interconnections between spaces. The characteristics of the emerging form, however, lie rather in the complexity how shifted spaces and parts are fitted together, than in a radical overall emergent geometry. Spatially as well as a structurally, the form moves from a simple modular repetitive system towards a more complex adaptive one, with interconnected parts which cannot stand alone but rather form an organic whole.
keywords	complex geometry, emergence, adaptive topology, voronoi diagram
series	other
type	normal paper
email
more	http://www.generativeart.com/
last changed	2012/09/20 18:25

_id	ijac20075406
id	ijac20075406
authors	Iordanova, Ivanka
year	2007
title	Teaching Digital Design Exploration: Form Follows
source	International Journal of Architectural Computing vol. 5 - no. 4, pp. 685-702
summary	This paper presents some challenges of teaching computational geometry to architectural students, and proposes a multi-level pedagogical scheme introducing associative geometry and parametric modeling/design into architectural design education. It reports on two pedagogical experiences: one held in the context of a spatial geometry course in the first year of education; and another one, in a digital design studio with third-year architectural students. More specifically, it discusses the impact on design exploration of a library of interactive referents models introduced into the architectural studio. Situated in the 'performance' paradigm of digital design methods, they allow for design object explorations based on modification of architecturally meaningful features (structural, environmental, functional, etc.). The form of a design object can thus 'follow' function, structure, or even sustainability. The digital methods and the design knowledge transferred by the interactive models, together with their visual nature, are found to amplify the processes of 'seeing-as' and the 'reflective conversation with the situation' considered essential for creative design.
series	journal
email
last changed	2008/02/25 20:30

_id	ecaade2007_166
id	ecaade2007_166
authors	Liapi, Katherine A.
year	2007
title	An Integrative Design and Spatial Visualization System for Cable Strut Self-tensioned Structures
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 27-34
doi	https://doi.org/10.52842/conf.ecaade.2007.027
summary	Novel conceptions of structures consisting of spatial formations of struts and cables present a uniquely defined morphology and structural performance, and offer opportunities for innovative applications in building design. A common feature of these structures is that their spatial geometry is not “a priori” given. This paper is focused on a specific type of cable-strut structure that occurs from the assembly of self tensioned cable-strut modules The spatial configuration of these structures is very complex and necessitated the development of elaborate geometric algorithms that permit the generation of their formal geometry in a virtual 3D environment. To facilitate both the design and the construction of such structures, a spatial visualization system, which integrates a) algorithms for initial form generation, b) geometric parameters that simulate construction stiffening processes, and c) appropriate structural analysis methods, has been developed. The structural organization and parts of this system are presented in this paper. The system renders feasible the exploration of alternate geometries with various levels of pre-stress and displays initial and final configuration of the structure. It also allows for structural analysis data visualization. Examples of projects designed with the assistance of this system are included and discussed.
keywords	Cable-strut structures, tensegrity structures, modeling
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ascaad2007_032
id	ascaad2007_032
authors	Othman, A. and A. Al-Attili
year	2007
title	Re-Placing Embodied Interaction: Palestinian Architects Virtual Community
source	Em‘body’ing Virtual Architecture: The Third International Conference of the Arab Society for Computer Aided Architectural Design (ASCAAD 2007), 28-30 November 2007, Alexandria, Egypt, pp. 381-398
summary	Our ongoing project Palestine Architects Platform (PAP) –and PAP VE is a project intended to re-bond Palestinian architects and facilitate communication between them in Virtual Environments “virtual land” using virtual means. We used it as an example to argue that its inherently embedded spatial metaphor could compensate for the physical disconnectedness, and allow interaction on many different levels. Our paper proposes an interactive archiving and networking location where discourse is not only stored but categorised, analysed, retrieved and used to start new topics, or can be used to improve new debates. The focus is on the social values of PAP network and its empowering nature. The design and the structure is not simply a system for online socialisation rather it is a result of thoroughly studying available networks and their principles. It is a result of deep analysis of reality behind this community. We finally propose a set of principles that can secure a real innovative and creative knowledge exchange.
series	ASCAAD
email
last changed	2008/01/21 22:00

_id	4f70
id	4f70
authors	Pottmann; Helmut; Brell-Cokcan, Sigrid; Wallner, Johannes
year	2007
title	Discrete Surfacesfor Architectural Design
source	Nashboro Press 2007
summary	Geometric problems originating in architecture can lead to interesting research and results in geometry processing, computer aided geometric design, and discrete diﬀerential geometry. In this ar- ticle we survey this development and consider an important problem of this kind: Discrete surfaces (meshes) which admit a multi-layered geometric support structure. It turns out that such meshes can be el- egantly studied via the concept of parallel mesh. Discrete versions of the network of principal curvature lines turn out to be parallel to ap- proximately spherical meshes. Both circular meshes and the conical meshes considered only recently are instances of this meta-theorem. We dicuss properties and interrelations of circular and conical meshes, and also their connections to meshes in static equilibrium and dis- crete minimal surfaces. We conclude with a list of research problems in geometry which are related to architectural design.
series	book
type	normal paper
email
last changed	2008/03/14 15:59

_id	ecaade2007_162
id	ecaade2007_162
authors	Ramirez, Joaquin; Russell, Peter
year	2007
title	Second City
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 359-365
doi	https://doi.org/10.52842/conf.ecaade.2007.359
summary	In the era of communication, the participation in internet-communities has grown to become a motor for innovation in software and community platforms. The paper describes the hypothesis that, by creating a virtual city (or a second city) a new type of social, economic and scientific network is established, which is supported through visual communication technologies. The various users bring, per se, their own intrinsic motivation and requirements to the system. Nonetheless, a personal identification with a city/neighbourhood/house/apartment can be used to awake awareness and to foster participation. This is especially important when dealing with the city inhabitants. City modelling itself has been carried out for over a decade. Projects such as the city model of Graz have shown how city models can be established so as to be scalable for new information (Dokonal et al 2000). Furthermore, these city models have been used in the education of future architects and urban planners. The project described here moves in the opposite direction: the model moves out of the classroom to an interdisciplinary city-model-platform. The work described here is the conceptual model for a multi-dimensional data set that models the city. This has spawned a host of other projects using the model as a foundation for further interactivity development and the extension of the model itself. The paper describes the structure of the conceptual model and the first experience of incorporating diverse projects such those mentioned above. The model also is structured so as to be compatible with the XML standards being developed for city information (CityGML). The goal of the project is to create a data set describing the city that not only describes the geometry, but also the history (including planned histories) and nature of the city. In contrast to virtual realities, which attempt to create a separate world (e.g. Second Life), the Second City is intended as an interdisciplinary repository for the geometrical, historical and cultural information of the city.
keywords	City modelling, virtual environments, web 2.0
series	eCAADe
email
last changed	2022/06/07 08:00

_id	acadia16_254
id	acadia16_254
authors	Sharmin, Shahida; Ahlquist, Sean
year	2016
title	Knit Architecture: Exploration of Hybrid Textile Composites Through the Activation of Integrated Material Behavior
source	ACADIA // 2016: POSTHUMAN FRONTIERS: Data, Designers, and Cognitive Machines [Proceedings of the 36th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-77095-5] Ann Arbor 27-29 October, 2016, pp. 254-259
doi	https://doi.org/10.52842/conf.acadia.2016.254
summary	The hybrid system in textile composites refers to the structural logic defined by Heino Engel, which describes a system that integrates multiple structural behaviors to achieve an equilibrium state (Engel 2007). This research explores a material system that can demonstrate a hybrid material behavior defined by the differentiated tensile and bending-active forces in a single, seamless knitted composite material. These behaviors were installed during the materialization phase and activated during the composite formation process. Here, the material formation involves two interdependent processes: 1) development of the knitted textile with integrated tensile and reinforced materials and 2) development of the composite by applying pre-stress and vacuuming the localized area with reinforcements in a consistent resin-based matrix. The flat bed industrial weft knitting machine has been utilized to develop the knitted textile component of the system with a controlled knit structure. This enables us to control the material types, densities, and cross sections with integrated multiple layers/ribs and thus, the performance of the textile at the scale of fiber structure. Both of these aspects were researched in parallel, using physical and computational methods informed and shaped by the potentials and constraints of each other. A series of studies has been utilized to develop small-scale prototypes that depict the potential of the hybrid textile composite as the generator of complex form and bending active structures. Ultimately, it indicates the possibilities of hybrid textile composite materials as self-structuring lightweight components that can perform as highly articulated and differentiated seamless architectural elements that are capable of transforming the perception of light, space, and touch.
keywords	form-finding, programmable materials, composite forming processes, embedded responsiveness
series	ACADIA
type	paper
email
last changed	2022/06/07 07:56

_id	ecaade2007_029
id	ecaade2007_029
authors	Terzidis, Kostas; Jungclaus, Jan
year	2007
title	Predicting the Future: Open Source CAAD?
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 815-819
doi	https://doi.org/10.52842/conf.ecaade.2007.815
summary	This paper will present a prototype open source CAD system developed recently by a join effort among Harvard, CMU, and MIT. The system is composed of an expandable user interface, a data structure that supports 2D and 3D objects, image processing capabilities, animation, network communication (TCP/IP), serial interface, and file processing modules that can be expanded. The idea was to develop seed modules that can interact with one another in order to be modified, expanded, or new ones added. The language used is Processing and the setup is made to be implemented in an open source format (i.e. GNU and Google Code). The system is an open source universal architectural CAD system that will hopefully serve as the software standard for education and practice.
keywords	Open source, digital design
series	eCAADe
email
last changed	2022/06/07 07:58

_id	ecaade2007_226
id	ecaade2007_226
authors	Agger, Kristian; Lassen, Michael; Knudsen, Nikolaj; Borup, Ruben; Rimestad, Jens; Norholdt, Peter; Bramsen, Nikolaj
year	2007
title	B-processor
source	Predicting the Future [25th eCAADe Conference Proceedings / ISBN 978-0-9541183-6-5] Frankfurt am Main (Germany) 26-29 September 2007, pp. 43-50
doi	https://doi.org/10.52842/conf.ecaade.2007.043
summary	The B-processor is a redesign of the digital building information modelling/managing concept: Addressing the whole building industry participants and all phases in the building process. Offering a new “standard” for digital building information structure with generic modelling and evaluation tools in the B-model kernel. Plug-in structure for free extension of the B-processor system by the Building Industry. Kernel prototyped in Java to be downloaded for free – open source.
keywords	Digital applications in construction, digital fabrication and construction, prediction and evaluation, design methodology, generative design
series	eCAADe
email
last changed	2022/06/07 07:54

_id	bsct_ahmeti
id	bsct_ahmeti
authors	Ahmeti, Flamur
year	2007
title	Efficiency of Lightweight Structural Forms: The Case of Treelike Structures - A comparative Structural Analysis
source	Vienna University of Technology; Building Science & Technology
summary	This work addresses the structural efficiency of lightweight tree-like structures for three case studies: Stuttgart Airport, Beaverton Library, and Thermal Bad Oeyenhausen. The case studies are simulated using Build simulation software, to determine the stresses induced in each structure. The material efficiency and shapes areexplored in terms of load bearing structures. Hybrids of the above structures are formed to compare the pattern morphology used by various types of tree-like structure and assess the structural behavior. In addition, (steel, wood and concrete) materials are compared to determine which would have better structural performance. In order to show the resemblance between the growing trees and the tree-like structures, an example of both cases is simulated and stresses evaluated. Results show that, in general, the minimum stress and deformations are obtained for steel. Structures made out of this material also exhibit higher load bearing capability, optimum stability factors and the best geometric efficiency, inspite of higher specific weight (10 times wood, and 3 times concrete).
series	thesis:MSc
email
more	http://cec.tuwien.ac.at
last changed	2007/07/16 17:51

_id	ascaad2007_042
id	ascaad2007_042
authors	Ameireh, O.M.
year	2007
title	Abstract Thinking: An Introduction to Creative Thinking in Basic Design
source	Em‘body’ing Virtual Architecture: The Third International Conference of the Arab Society for Computer Aided Architectural Design (ASCAAD 2007), 28-30 November 2007, Alexandria, Egypt, pp. 527-542
summary	This paper critically examines the nature of the dramatic increase in the number of students accepted in schools of architecture in Jordan, and the contradictory decrease in their artistic, creative, thought process, projects problem solving and other skills. The paper also reviews architectural curriculum and courses to identify weaknesses in handling the changes and ultimately within these constraints and in order to handle the students variable potentials, abilities and contradictions, certain exercises in the basic design course are devised in ways that; reduces its dependency on learnable manual skills and conceptual thinking; uses teaching techniques that correlates and incorporates Arts, Architecture and Sciences as complementary topics; approaches and reaches creativity as a procedure not a gift; transfers and travels easily between complexities and simplicities, between natural and artificial intelligence, between abstract and relative thinking; employ geometries and design tools as the main structure of any composition; makes self evaluations of choices, decisions and variables easier. Taking Abstraction as a framework in solving the problem of the exercises gave answers and solution to many problems that was not easy solving under the conventional ways of design.
series	ASCAAD
email
last changed	2008/01/21 22:00

_id	sigradi2011_290
id	sigradi2011_290
authors	Azevedo de Oliveira, Fabiana Mabel
year	2011
title	Redes sociotécnicas: a concepção de uma interface [Sociotechnical network: design of an interface]
source	SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 568-570
summary	This paper aims to examine the forms of representation of the processes of creation of Web interfaces for platforms. Its origin is associated with a proposal that understands the new communications technologies, specifically the Internet, and the possibility of formation of a sociotechnical network, as a tool to expand the ways of social interaction (Egler, 2007). Increasing access to information and communication, making the process more open, redefining the relationships and social exchanges, and allowing its mediation by digital processes.
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	sigradi2007_af101
id	sigradi2007_af101
authors	Barci Castriota, Leonardo; Carla Viviane da Silva Angelo
year	2007
title	Digital technology and accessibility: The Rede Latino-americana de Acervos de Arquitetura e Urbanismo (RELARQ) [Tecnologia digital e acessibilidade: A Rede Latino-americana de Acervos de Arquitetura e Urbanismo (RELARQ)]
source	SIGraDi 2007 - [Proceedings of the 11th Iberoamerican Congress of Digital Graphics] México D.F. - México 23-25 October 2007, pp. 200-204
summary	The new digital technologies offer new possibilities of interconnection and re-connection that are reconfiguring the diverse areas of knowledge and the diverse fields of human action. In this direction, this work reflects on the proposal of the creation of the Latin American Network or Architectural Archives (RELARQ), pioneering initiative in our continent that aims to create a basis of cooperation between the diverse Brazilian and Latin-American institutions, with the objective to congregate, in an online catalogue, accessible to all, the information contained in hundreds of institutions distributed all over the continent, that will count with a common methodological basis for digital treatment and access to the images. With the RELARQ, the area of the History of Architecture will have a new, powerful tool in as far as the researchers will be able to access archives in the most distant places of our continent.
keywords	Architecture; digitalization; photography; accessibility; internet
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecaade2008_055
id	ecaade2008_055
authors	Beirão, José; Duarte, José; Stouffs, Rudi
year	2008
title	Structuring a Generative Model for Urban Design: Linking GIS to Shape Grammars
source	Architecture in Computro [26th eCAADe Conference Proceedings / ISBN 978-0-9541183-7-2] Antwerpen (Belgium) 17-20 September 2008, pp. 929-938
doi	https://doi.org/10.52842/conf.ecaade.2008.929
summary	Urban Design processes need to adopt flexible and adaptive procedures to respond to the evolving demands of the contemporary city. To support such dynamic processes, a specific design methodology and a supporting tool are needed. This design methodology considers the development of a design system rather than a single design solution. It is based on patterns and shape grammars. The idea is to link the descriptions of each pattern to specific shape rules inducing the generation of formal solutions that satisfy the pattern. The methodology explores, from the urban designer point of view, the capacity of a shape grammar to codify and generate urban form (Duarte et al, 2007). This paper defines the ontology of urban entities to build on a GIS platform the topology describing the various components of the city structure. By choosing different sets of patterns the designer defines his vision for a specific context. The patterns are explicated into shape rules that encode the designer’s interpretation of the pattern, and operate on this ontology of urban entities generating solutions that satisfy the pattern’s concept. Some examples of the topological relations are shown.
keywords	Patterns, shape grammars, ontology, generative urban design
series	eCAADe
email
last changed	2022/06/07 07:54

_id	ijac20075307
id	ijac20075307
authors	Bessone, Miriam; Miro, Ricardo Perez
year	2007
title	Music and Architecture: Bonds, Interrelations, Transductions
source	International Journal of Architectural Computing vol. 5 - no. 3, pp. 551-569
summary	Digital technology and knowledge integration between musicians and architects enable us to explore and redefine links between music and architecture. This paper describes the experience and results of the creative processes undertaken by music and architecture students and academics to achieve a hyper-medial composition. The processes embrace the simultaneous construction from music to visual form and vice-versa. This exploration is originated from electro-acoustic music works, written ad-hoc, and based on specific assignments especially designed and framed within two types of situations and links with digital technologies: independent actions and interrelated actions. The intention of this work is to obtain constants and/or variables capable of allowing a certain type of graphic conventionalization that will make possible the mathematic representation previously necessary to create specific software tools.
series	journal
last changed	2007/11/20 18:06

_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

For more results click below: