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	cf2009_786
id	cf2009_786
authors	Tourre, Vincent; Miguet, Francis
year	2009
title	A light-based parametric design model: The application of the inverse lighting in the design of the Louvre Abu Dhabi museum
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 786- 799
summary	The use of a design tool materializing the performative design concept is presented. The association of parametric design with lighting intentions leads to a light-based parametric design approach. This approach have been implemented through an inverse natural lighting model which is intended to aid the daylight design (windows, shading devices or others) in the early stages of architectural design. We show this model can be used in a performative design approach to define the transparency property through a case study: the dome of the Louvre Abu Dhabi museum by Ateliers Jean Nouvel.
keywords	Natural lighting, inverse lighting, parametric design, case study
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	ijac20097304
id	ijac20097304
authors	Datta, Sambit; Hanafin, Stuart; Pitts, Gregory
year	2009
title	Experiments with stochastic processes: Facade subdivision based on wind motion
source	International Journal of Architectural Computing vol. 7 - no. 3, 389-402
summary	Constraint based tools for architectural design exploration need to satisfy aesthetic and functional criteria as well as combine discrete and continuous modes of exploration. In this paper, we examine the possibilities for stochastic processes in design space exploration. Specifically, we address the application of a stochastic wind motion model to the subdivision of an external building envelope into smaller discrete components. Instead of deterministic subdivision constraints, we introduce explicit uncertainty into the system of subdivision. To address these aims, we develop a model of stochastic wind motion; create a subdivision scheme that is governed by the wind model and explore a design space of a façade subdivision problem. A discrete version of the façade, composed of light strips and panels, based on the bamboo elements deformed by continuous wind motion, is developed. The results of the experiments are presented in the paper.
series	journal
last changed	2009/10/20 08:02

_id	sigradi2009_1105
id	sigradi2009_1105
authors	Henriques, Gonçalo Castro; José P. Duarte; Joaquim Oliveira Fonseca
year	2009
title	TetraScript: Sistema integrado para optimizar a iluminação natural num espaço circunscrito [TetraScript: An Integrated System to Maximize the Natural Light in a Confined Space]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	The purpose of this research is to develop a process capable of optimizing the capture of light in a circumscribed space, using a responsive system of skylights. Research is focused on the design of irregular dome-like pavilion spaces but the envisioned process might be applied to other functional, formal, and spatial typologies. A process based on scripting generates a matrix of components based on geographic situation, and sun orientation. The integration of conception and fabrication with digital tools (CAD-CAM) enabled the construction of this non standard, parametric geometry, diminishing the costs of production, allowing personalization and assuring global sustainability.
keywords	digital fabrication; generative systems; cad-cam
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	sigradi2024_293
id	sigradi2024_293
authors	Medeiros de Souza, Ludmilla and Tavares da Silva, Felipe
year	2024
title	Automatic Generation of Reinforced Concrete Structures Formwork Using a Parametric Model
source	Herrera, Pablo C., Gómez, Paula, Estevez, Alberto T., Torreblanca-Díaz, David A. Biodigital Intelligent Systems - Proceedings of the XXVIII Conference of the Iberoamerican Society of Digital Graphics (SIGraDi 2024) - ISBN 978-9915-9635-2-5, iBAG-UIC Barcelona, Spain, 13-15 November 2024, pp. 1849–1858
summary	Although there are currently means to automate formwork design for reinforced concrete structures, it is common to use manual methods or just electronic spreadsheets. This work aims to demonstrate the implementation of a parametric and generative model for timber formwork. A parametric geometric model was developed for a three-dimensional structure of rigid reinforced concrete frames with beams, columns, and solid slabs, with automatic formwork sizing based on ABNT NBR 15696 (2009) and ABNT NBR 7190 (2022). As a result, a geometric model is generated, where the thicknesses are visualized instantly in the CAD system window and updated according to changes in the input data. The parametric model that generates the components of timber formwork can significantly help optimize the structure in the design process. After sizing, the proposed parametric algorithm can be used to find an optimized solution with a reduced formwork rate per built area (m2/m2).
keywords	Reinforced concrete formwork, Construction waste, Parametric modeling, Automatic design
series	SIGraDi
email
last changed	2025/07/21 11:50

_id	ecaade2009_061
id	ecaade2009_061
authors	Razali, Fairuz Reza; Zubir, Syed Sobri; Ab. Rahman, Rashidah; Sulaiman, Wan Azhar
year	2009
title	Associative Architectural Design: The Potential of Land Economical and Ecological Factors in Determining Variations in Housing Design
doi	https://doi.org/10.52842/conf.ecaade.2009.181
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 181-188
wos	WOS:000334282200022
summary	Capitalism does play a decisive role in the planning and generation of countless generic typologies in the urban landscape to a certain extent. This also includes the planning and generation of housing models. As a result of conventional planning that is based on ‘entrepreneurship subdivision’, only similar housing model for a specific income group is sometimes offered. In the long term, this kind of development occupies massive land, which is not suitable for sustainable growth and creates social segregation. This paper suggests an alternative approach of ‘associative design’. Parametric design software is utilized to generate the housing diversity. It aims to construct a population of housing units that together form a new neighborhood model based on the land specificity that emphasizes its economic and ecological factors.
keywords	Associative design, parametric, housing, ecology, land specificity
series	eCAADe
email
last changed	2022/06/07 08:00

_id	ijac20097407
id	ijac20097407
authors	Sass, Lawrence
year	2009
title	Parametric Constructionist Kits: Physical Design and Delivery System for Rapid Prototyping Devices
source	International Journal of Architectural Computing vol. 7 - no. 4, 623-642
summary	In this paper we illustrate a design methodology based on constructionist learning principles with CAD modeling and rapid prototyping. The belief is that a constructionist approach to design development extends design possibilities beyond the visual aspects of rendering and animation to building construction by way of component-based parametric modeling. This is demonstrated by way of construction kits as a proposed system of physical design production, individually and in groups. Results of the system are data sets for model manufacturing, hand assembly and design feedback. The impact of this work is to teach physical modeling as a system of production that will allow a designer hands-on learning of building structure, material mechanics and building component behavior. Also design success is newly defined as a relationship between the visual and physical evaluation; not just the visual. The paper ends with examples of complex design models generated from elements in the construction kit and a physical design grammar used to guide element assembly. Although the examples in this paper satisfy model making for building structures we believe this system can be useful for anyone who needs to construct physical artifacts beyond traditional scales found in rapid prototyping.
series	journal
last changed	2010/09/06 08:02

_id	caadria2009_172
id	caadria2009_172
authors	Schimek, Heimo; Milena Stavric, Albert Wiltsche and Otto Roeschel
year	2009
title	Parametrics of Movable Polyhedral Models in Performative Architecture
doi	https://doi.org/10.52842/conf.caadria.2009.185
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 185-194
summary	We present a parametrical approach to movable polyhedral models. Based on polyhedral geometry the whole structure consisting of an interconnected series of prisms (with dual spherical joints) can move 3-dimensionally. The principles of polyhedral geometry allow constraint movements of the prisms with a certain degree of freedom. We use these geometrical principles to open and close façades for ventilation or structures for shading control superimposed on building envelopes. The different groups of regular polyhedra in the Euclidean 3-space and their specific topological types will be discussed in order to choose the appropriate model and showe geometrical theory of movable polyhedral models can be successfully applied to performative architecture.
keywords	Moveable polyhedral models: kinematic architecture; parametric design; geometry of joints; performative architecture
series	CAADRIA
email
last changed	2022/06/07 07:57

_id	cf2011_p060
id	cf2011_p060
authors	Sheward, Hugo; Eastman Charles
year	2011
title	Preliminary Concept Design (PCD) Tools for Laboratory Buildings, Automated Design Optimization and Assessment Embedded in Building Information Modeling (BIM) 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. 451-476.
summary	The design of laboratory buildings entails the implementation of a variety of design constraints such as building codes; design guidelines and technical requirements. The application of these requires from designers the derivation of data not explicitly available at early stages of design, at the same time there is no precise methodology to control the consistency, and accuracy of their application. Many of these constraints deal with providing secure environmental conditions for the activities inside laboratories and their repercussions both for the building occupants and population in general, these constraints mandate a strict control over the building‚Äôs Mechanical Equipment (MEP), in particular the Heating Ventilating and Air Conditioning (HVAC) system. Due to the importance of these laboratory designers are expected to assess their designs not only according spatial relationships, but also design variables such as HVAC efficiency, air pressure hierarchies, operational costs, and the possible implications of their design decisions in the biological safety of the facility. At this point in time, there are no practical methods for making these assessments, without having constant interaction with HVAC specialists. The assessment of laboratory design variables, particularly those technical in nature, such as dimensioning of ducts or energy consumption are usually performed at late stages of design. They are performed by domain experts using data manually extracted from design information, with the addition of domain specific knowledge, the evaluation is done mostly through manual calculations or building simulations. In traditional practices most expert evaluations are performed once the architectural design have been completed, the turn around of the evaluation might take hours or days depending on the methods used by the engineer, therefore reducing the possibility for design alternatives evaluation. The results of these evaluations will give clues about sizing of the HVAC equipment, and might generate the need for design reformulations, causing higher development costs and time delays. Several efforts in the development of computational tools for automated design evaluation such as wheel chair accessibility (Han, Law, Latombe, Kunz, 2002) security and circulation (Eastman, 2009), and construction codes (ww.Corenet.gov.sg) have demonstrated the capabilities of rule or parameter based building assessment; several computer applications capable of supporting HVAC engineers in system designing for late concept or design development exist, but little has been done to assess the capabilities of computer applications to support laboratory design during architectural Preliminary Concept Design(PCD) (Trcka, Hensen, 2010). Developments in CAD technologies such as Building Information Modeling (BIM) have opened doors to formal explorations in generative design using rule based or parametric modeling [7]. BIM represents buildings as a collection of objects with their own geometry, attributes, and relations. BIM also allows for the definition of objects parametrically including their relation to other model objects. BIM has enabled the development of automated rule based building evaluation (Eastman, 2009). Most of contemporary BIM applications contemplate in their default user interfaces access to design constraints and object attribute manipulations. Some even allow for the application of rules over these. Such capabilities make BIM viable platforms for automation of design data derivation and for the implementation of generative based design assessment. In this paper we analyze the possibilities provided by contemporary BIM for implementing generative based design assessment in laboratory buildings. In this schema, domain specific knowledge is embedded in to the BIM system as to make explicit design metrics that can help designers and engineers to assess the performance of design alternatives. The implementation of generative design assessments during PCD can help designers and engineers to identify design issues early in the process, reducing the number of revisions and reconfigurations in later stages of design. And generally improving design performance.
keywords	Heating ventilating and Air Conditioning (HVAC), Building Information Models (BIM), Generative Design Assessment
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	sigradi2009_833
id	sigradi2009_833
authors	Stoyanov, Momchil
year	2009
title	Análise lumínica virtual de elementos construídos por meio de programação: exemplo de aplicação em software do tipo BIM [ Analysis of Virtual Elements Constructed by Means of Programming: The Example of BIM-Application Software]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	Daylighting is an important part of designing sustainably. Daylighting is the use of natural light for primary interior illumination. This reduces our need for artificial light within the space, thus reducing internal heat gain and energy use. Direct sunlight, once it enters the building, is not only light but heat, and that additional heat will need to be taken into account in your energy analysis." While Autodesk Revit Architecture 2010 (ARA) itself cannot perform the actual analysis, there are some ways to do that. This papper focuses on the study of parametric modeling using a BIM tool for daylighting analysis. This paper presents the first part of the building method of LUME, a plug-in maked whit C# programming language in Microsoft Visual Studio 2010 and ARA Software Developer Kit (SDK) package. The script accepts as its input a standard three dimensional model of building opening and his position on space.
keywords	Script language; BIM; Revit Architecture; Energy analysis; Daylighting; Parametric design process
series	SIGRADI
email
last changed	2016/03/10 10:01

_id	ecaade2009_keynote2
id	ecaade2009_keynote2
authors	Whitehead, Hugh
year	2009
title	Social Experiments in Design Technology
doi	https://doi.org/10.52842/conf.ecaade.2009.x.f4d
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference] Istanbul (Turkey) 16-19 September 2009
summary	The delivery of a successful project demands high levels of collaboration across an expanded design team, which now includes consultants, fabricators and contractors as well as architects and engineers. The pace of development in design technology has been very rapid during the last few years and there are now many software products which offer high levels of sophistication. Most provide associative and parametric modelling strategies, which can be further enhanced and extended by the use of scripting languages. Designers are becoming tool-builders while fabricators are becoming digital craftsmen. With the advent of fast efficient drawing extraction the industry is at last making determined steps towards a model-driven process. However there is no integrated platform which supports the free exchange of ideas, combined with the evaluation of performance, experimentation with production techniques and the evolution of project-specific workflows. In education the design schools have been quick to recognise the potential of the new design technology. This has led to a rapid expansion in course curricula that now offer many new specialisations, most of which also need to be under-pinned by a good grounding in descriptive geometry, mathematics and physics. The architect as a generalist, who coordinates the work of specialists, is being challenged by an increasing breadth of technical studies that require more than just a superficial depth of understanding. In practice the gulf is widening even more rapidly. New graduates, who often have spectacular expertise in modelling and fluency in scripting languages, do not yet have the design and construction experience necessary to direct their efforts to best effect. On the other hand people running project teams do not have the technical background to understand the potential of the skills and resources that are available. Today there is no longer the continuity that used to derive from apprenticeship. As we experiment we find that tools based on new ideas and techniques can radically change workflow – but fear of the unknown can provoke resistance. So the problems we face in harnessing the new technology are as much social and cultural as they are technical. The presentation will focus on developing attitudes towards tool-building with the aim of integrating design, analysis and production. This is part of a continual and quite gradual process, which requires the ability to play interpretive roles that help to bring about cultural change. Examples will be shown from the work of the Specialist Modelling Group at Foster+Partners who now have tenyears experience in deploying design technology in an environment where research is intensely project driven.
series	eCAADe
type	keynote paper
last changed	2022/06/07 07:50

_id	caadria2009_031
id	caadria2009_031
authors	Abdelhameed, Wael
year	2009
title	Cognition Model in Conceptual Designing
doi	https://doi.org/10.52842/conf.caadria.2009.771
source	Proceedings of the 14th International Conference on Computer Aided Architectural Design Research in Asia / Yunlin (Taiwan) 22-25 April 2009, pp. 771-780
summary	Both design researchers and cognitive scientists have developed various process models to study human creative behaviour in design. The models developed are often based on observations of design processes and analysis of design protocols. This research paper reports the-stateof- the-art in the area of cognition models that present design activities in conceptual designing. The research paper investigates the approaches of these cognition models. A new approach of a cognition activity model in conceptual designing is proposed. The new approach used in the introduced model takes into the account factors and activities that are related to the external environment of design (design medium). The external environment has an important role in the cognition activities and the evaluation process in a way that can hardly be ignored or neglected. The presented model of cognition activities in conceptual designing highlights two main factors employed in all the iteration loops of the model, namely: media use and representation. Case studies of architecture students’ designs have been analyzed. The analysis of these case studies helped in forming the proposed model. Various results have been concluded and reported.
keywords	Cognition model; conceptual designing; design process; design theory
series	CAADRIA
email
last changed	2022/06/07 07:54

_id	cf2009_273
id	cf2009_273
authors	Abdelmohsen, Sherif M. and Do, Ellen Yi-Luen
year	2009
title	Analysing the significance of problem solving expertise and computational tool proficiency in design ideation
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 273-287
summary	This paper presents a pilot study to analyze the role of problem solving expertise (PSE) and computational tool proficiency (CTP) of expert and novice architects in the ideation process within a distributed cognition environment. To analyze PSE, we studied the frequency of occurrence of unique problem solving tasks per limited commitment mode (LCM) revisit. We also devised a quantitative measure for analyzing CTP based on the frequency of unique and normally distributed modeling activities per design process flows for a parametric modeling tool. In our study that involved freehand sketching and parametric modeling as two external representations used in the ideation process, we concluded that expert architects have higher levels of both PSE and CTP than novices.
keywords	Problem solving, distributed cognition, design ideation, parametric modeling, freehand sketching
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	acadia18_216
id	acadia18_216
authors	Ahrens, Chandler; Chamberlain, Roger; Mitchell, Scott; Barnstorff, Adam
year	2018
title	Catoptric Surface
doi	https://doi.org/10.52842/conf.acadia.2018.216
source	ACADIA // 2018: Recalibration. On imprecisionand infidelity. [Proceedings of the 38th Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-0-692-17729-7] Mexico City, Mexico 18-20 October, 2018, pp. 216-225
summary	The Catoptric Surface research project explores methods of reflecting daylight through a building envelope to form an image-based pattern of light on the interior environment. This research investigates the generation of atmospheric effects from daylighting projected onto architectural surfaces within a built environment in an attempt to amplify or reduce spatial perception. The mapping of variable organizations of light onto existing or new surfaces creates a condition where the perception of space does not rely on form alone. This condition creates a visual effect of a formless atmosphere and affects the way people use the space. Often the desired quantity and quality of daylight varies due to factors such as physiological differences due to age or the types of tasks people perform (Lechner 2009). Yet the dominant mode of thought toward the use of daylighting tends to promote a homogeneous environment, in that the resulting lighting level is the same throughout a space. This research project questions the desire for uniform lighting levels in favor of variegated and heterogeneous conditions. The main objective of this research is the production of a unique facade system that is capable of dynamically redirecting daylight to key locations deep within a building. Mirrors in a vertical array are individually adjusted via stepper motors in order to reflect more or less intense daylight into the interior space according to sun position and an image-based map. The image-based approach provides a way to specifically target lighting conditions, atmospheric effects, and the perception of space.
keywords	full paper, non-production robotics, representation + perception, performance + simulation, building technologies
series	ACADIA
type	paper
email
last changed	2022/06/07 07:54

_id	cf2009_231
id	cf2009_231
authors	Attar, Ramtin; Aish, Robert; Stam, Jos; Brinsmead, Duncan; Tessier, Alex; Glueck, Michael and Khan, Azam
year	2009
title	Physics-based generative design
source	T. Tidafi and T. Dorta (eds) Joining Languages, Cultures and Visions: CAADFutures 2009, PUM, 2009, pp. 231-244
summary	We present a physics-based generative design approach to interactive form-finding. While form as a product of dynamic simulation has been explored previously, individual projects have been developed as singleton solutions. By identifying categories of computational characteristics, we present a novel unified model that generalizes existing simulations through a constraint-based approach. The potential of interactive form finding simulation is explored through exemplary studies: a conceptual approach to a fixed form that acts as a visualization of interacting forces, and a constraint-based model of the fabrication logic for a panelization system are examined. Implications of constraint-based simulation on future directions are discussed.
keywords	Form finding, dynamic simulation, physics-based design, panelization
series	CAAD Futures
email
last changed	2009/06/08 20:53

_id	cf2011_p127
id	cf2011_p127
authors	Benros, Deborah; Granadeiro Vasco, Duarte Jose, Knight Terry
year	2011
title	Integrated Design and Building System for the Provision of Customized Housing: the Case of Post-Earthquake Haiti
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. 247-264.
summary	The paper proposes integrated design and building systems for the provision of sustainable customized housing. It advances previous work by applying a methodology to generate these systems from vernacular precedents. The methodology is based on the use of shape grammars to derive and encode a contemporary system from the precedents. The combined set of rules can be applied to generate housing solutions tailored to specific user and site contexts. The provision of housing to shelter the population affected by the 2010 Haiti earthquake illustrates the application of the methodology. A computer implementation is currently under development in C# using the BIM platform provided by Revit. The world experiences a sharp increase in population and a strong urbanization process. These phenomena call for the development of effective means to solve the resulting housing deficit. The response of the informal sector to the problem, which relies mainly on handcrafted processes, has resulted in an increase of urban slums in many of the big cities, which lack sanitary and spatial conditions. The formal sector has produced monotonous environments based on the idea of mass production that one size fits all, which fails to meet individual and cultural needs. We propose an alternative approach in which mass customization is used to produce planed environments that possess qualities found in historical settlements. Mass customization, a new paradigm emerging due to the technological developments of the last decades, combines the economy of scale of mass production and the aesthetics and functional qualities of customization. Mass customization of housing is defined as the provision of houses that respond to the context in which they are built. The conceptual model for the mass customization of housing used departs from the idea of a housing type, which is the combined result of three systems (Habraken, 1988) -- spatial, building system, and stylistic -- and it includes a design system, a production system, and a computer system (Duarte, 2001). In previous work, this conceptual model was tested by developing a computer system for existing design and building systems (Benr__s and Duarte, 2009). The current work advances it by developing new and original design, building, and computer systems for a particular context. The urgent need to build fast in the aftermath of catastrophes quite often overrides any cultural concerns. As a result, the shelters provided in such circumstances are indistinct and impersonal. However, taking individual and cultural aspects into account might lead to a better identification of the population with their new environment, thereby minimizing the rupture caused in their lives. As the methodology to develop new housing systems is based on the idea of architectural precedents, choosing existing vernacular housing as a precedent permits the incorporation of cultural aspects and facilitates an identification of people with the new housing. In the Haiti case study, we chose as a precedent a housetype called ‚Äúgingerbread houses‚Äù, which includes a wide range of houses from wealthy to very humble ones. Although the proposed design system was inspired by these houses, it was decided to adopt a contemporary take. The methodology to devise the new type was based on two ideas: precedents and transformations in design. In architecture, the use of precedents provides designers with typical solutions for particular problems and it constitutes a departing point for a new design. In our case, the precedent is an existing housetype. It has been shown (Duarte, 2001) that a particular housetype can be encoded by a shape grammar (Stiny, 1980) forming a design system. Studies in shape grammars have shown that the evolution of one style into another can be described as the transformation of one shape grammar into another (Knight, 1994). The used methodology departs takes off from these ideas and it comprises the following steps (Duarte, 2008): (1) Selection of precedents, (2) Derivation of an archetype; (3) Listing of rules; (4) Derivation of designs; (5) Cataloguing of solutions; (6) Derivation of tailored solution.
keywords	Mass customization, Housing, Building system, Sustainable construction, Life cycle energy consumption, Shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	ijac20097408
id	ijac20097408
authors	Biloria, Nimish; Valentina Sumini
year	2009
title	Performative Building Skin Systems: A Morphogenomic Approach Towards Developing Real-Time Adaptive Building Skin Systems
source	International Journal of Architectural Computing vol. 7 - no. 4, 643-676
summary	Morphogenomics, a relatively new research area, involves understanding the role played by information regulation in the emergence of diverse natural and artificially generated morphologies. Performative building skin systems as a bottom-up parametric formation of context aware interdependent, ubiquitously communicating components leading to the development of continually performative systems is one of the multi-scalar derivations of the aforementioned Morphogenomic understanding. The agenda of adaptations for these building skins specifically corresponds to three domains of adaptation: structural, behavioral and physiological adaptations resulting in kinetic adaptability, energy generation, conservation, transport and usage principles as well as material property based changes per component. The developed skins adapt in real time via operating upon ubiquitous communication and data-regulation protocols for sensing and processing contextual information. Computational processes and information technology based tools and techniques such as parametric design, real-time simulation using game design software, environmental information mapping, sensing and actuating systems coupled with inbuilt control systems as well as manufacturing physical models in collaboration with praxis form a vital part of these skin systems. These experiments and analysis based on developing intrinsic inter-dependencies between contextual data, structure and material logistics thus lay the foundation for a new era of continually performing, self powering, real-time adaptive intelligent building skin systems.
series	journal
last changed	2010/09/06 08:02

_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	ijac20097101
id	ijac20097101
authors	Boulaassal, H.; Landes, T.; Grussenmeyer, P.
year	2009
title	Automatic Extraction of Planar Clusters and their Contours on Building Facades Recorded by Terrestrial Laser Scanner
source	International Journal of Architectural Computing vol. 7 - no. 1, 1-20
summary	Since 3D city models need to be realistic not only from a bird's point of view, but also from a pedestrian's point of view, the interest in the generation of 3D façade models is increasing. This paper presents two successive algorithms for automatically segmenting building façades scanned by Terrestrial Laser Scanner (TLS) into planar clusters and extracting their contours. Since majority of façade components are planes, the topic of automatic extraction of planar features has been studied. The RANSAC algorithm has been chosen among numerous methods. It is a robust estimator frequently used to compute model parameters from a dataset containing outliers, as it occurs in TLS data. Nevertheless, the RANSAC algorithm has been improved in order to extract the most significant planar clusters describing the main features composing the building façades. Subsequently, a second algorithm has been developed for extracting the contours of these features. The innovative idea presented in this paper is the efficient way to detect the points composing the contours. In order to evaluate the performances of both algorithms, they have successively been applied on samples with different characteristics, i.e. densities, types of façades and size of architectural details. Finally, a quality evaluation based on the comparison of planar clusters and contours obtained manually has been carried out. The results prove that the proposed algorithms deliver qualitative as well as quantitative satisfactory results and confirm that both algorithms are reliable for the forthcoming 3D modelling of building façades.
series	journal
last changed	2009/06/23 08:07

_id	sigradi2009_913
id	sigradi2009_913
authors	Bruno, Fernando Batista; José Luis Farinatti Aymone; Fábio Gonçalves Teixeira; Tânia Luisa Koltermann da Silva
year	2009
title	Programa de modelagem 3D em VRML para web [VRML 3D modeling software for Web]
source	SIGraDi 2009 - Proceedings of the 13th Congress of the Iberoamerican Society of Digital Graphics, Sao Paulo, Brazil, November 16-18, 2009
summary	This work describes a software which is a VRML (Virtual Reality Modeling Language) modeler based on Web and a learning object for this language. The modeler, developed using PHP, HTML and JavaScript, runs directly on a website and it is able to show the model and its VRML code during the creation process, and to record it on the user machine. The software developed is able to model primitive forms, as box, cylinder and sphere, and faceset surfaces, helping users to model 3D objects and to understand VRML syntax. The model material is chosen according to color and transparency.
keywords	Web; VRML; 3D Modeling; Virtual Reality
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecaade2009_117
id	ecaade2009_117
authors	Burry, Jane; Holzer, Dominik
year	2009
title	Sharing Design Space: Remote Concurrent Shared Parametric Modeling
doi	https://doi.org/10.52842/conf.ecaade.2009.333
source	Computation: The New Realm of Architectural Design [27th eCAADe Conference Proceedings / ISBN 978-0-9541183-8-9] Istanbul (Turkey) 16-19 September 2009, pp. 333-340
wos	WOS:000334282200040
summary	This paper reports on research involving researchers and senior undergraduate students investigating the potential for sharing parametric digital design models via a central server using version control software for file sharing and locking. The innovation is introducing remote shared flexible modeling in very early design to observe firstly, the negotiation of protocols for working together in this environment and secondly the generative and constraining impacts of working in a flexible relational model with other unseen hands at work.
keywords	collaborative design, digital modeling, parametric design, version control
series	eCAADe
email
last changed	2022/06/07 07:54

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