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 ijac20109304
id ijac20109304
authors Vermisso, Emmanouil
year 2011
title Design economies of surface: can Architects learn from the manufacturing process of industry-driven projects like auto-cross racing?
source International Journal of Architectural Computing vol. 9 - no. 3, 259-284
summary This paper discusses an in-house manufactured race-car body for the annual Formula SAE® Series competition. The driving parameters for the design and fabrication process are examined with regards to the assignment's ‘format’ as a joint study between architecture and engineering students. Traditionally there has been an inhibition concerning communication between architects and engineers, that is perhaps successfully exemplified through Peter Rice's example of the "Iago mentality" (Rice, 1998) where the Shakespearean confrontation between Othello and Iago is viewed as an analogy to this communication: "In the dialogue of Architecture and Engineering, the engineer is the voice of rationality and reasoni." Unless dictated by construction necessities, research between these two disciplines is not sought as regularly as we would hope for; we are therefore, interested to assess the analog and computational techniques used from a design perspective, and, by understanding the implications of working among two different but similarly geared backgrounds, describe possible improvements on real-size projects that require both technical and design input, thereby affirming Rice's belief for creative inter-disciplinary discourse. Finally, the project is a reminder of the common ground between architectural and automotive design, by examining the notion of surface from a cross-disciplinary premise.
series journal
last changed 2019/05/24 09:55

_id cf2011_p109
id cf2011_p109
authors Abdelmohsen, Sherif; Lee Jinkook, Eastman Chuck
year 2011
title Automated Cost Analysis of Concept Design BIM Models
source Computer Aided Architectural Design Futures 2011 [Proceedings of the 14th International Conference on Computer Aided Architectural Design Futures / ISBN 9782874561429] Liege (Belgium) 4-8 July 2011, pp. 403-418.
summary AUTOMATED COST ANALYSIS OF CONCEPT DESIGN BIM MODELS Interoperability: BIM models and cost models This paper introduces the automated cost analysis developed for the General Services Administration (GSA) and the analysis results of a case study involving a concept design courthouse BIM model. The purpose of this study is to investigate interoperability issues related to integrating design and analysis tools; specifically BIM models and cost models. Previous efforts to generate cost estimates from BIM models have focused on developing two necessary but disjoint processes: 1) extracting accurate quantity take off data from BIM models, and 2) manipulating cost analysis results to provide informative feedback. Some recent efforts involve developing detailed definitions, enhanced IFC-based formats and in-house standards for assemblies that encompass building models (e.g. US Corps of Engineers). Some commercial applications enhance the level of detail associated to BIM objects with assembly descriptions to produce lightweight BIM models that can be used by different applications for various purposes (e.g. Autodesk for design review, Navisworks for scheduling, Innovaya for visual estimating, etc.). This study suggests the integration of design and analysis tools by means of managing all building data in one shared repository accessible to multiple domains in the AEC industry (Eastman, 1999; Eastman et al., 2008; authors, 2010). Our approach aims at providing an integrated platform that incorporates a quantity take off extraction method from IFC models, a cost analysis model, and a comprehensive cost reporting scheme, using the Solibri Model Checker (SMC) development environment. Approach As part of the effort to improve the performance of federal buildings, GSA evaluates concept design alternatives based on their compliance with specific requirements, including cost analysis. Two basic challenges emerge in the process of automating cost analysis for BIM models: 1) At this early concept design stage, only minimal information is available to produce a reliable analysis, such as space names and areas, and building gross area, 2) design alternatives share a lot of programmatic requirements such as location, functional spaces and other data. It is thus crucial to integrate other factors that contribute to substantial cost differences such as perimeter, and exterior wall and roof areas. These are extracted from BIM models using IFC data and input through XML into the Parametric Cost Engineering System (PACES, 2010) software to generate cost analysis reports. PACES uses this limited dataset at a conceptual stage and RSMeans (2010) data to infer cost assemblies at different levels of detail. Functionalities Cost model import module The cost model import module has three main functionalities: generating the input dataset necessary for the cost model, performing a semantic mapping between building type specific names and name aggregation structures in PACES known as functional space areas (FSAs), and managing cost data external to the BIM model, such as location and construction duration. The module computes building data such as footprint, gross area, perimeter, external wall and roof area and building space areas. This data is generated through SMC in the form of an XML file and imported into PACES. Reporting module The reporting module uses the cost report generated by PACES to develop a comprehensive report in the form of an excel spreadsheet. This report consists of a systems-elemental estimate that shows the main systems of the building in terms of UniFormat categories, escalation, markups, overhead and conditions, a UniFormat Level III report, and a cost breakdown that provides a summary of material, equipment, labor and total costs. Building parameters are integrated in the report to provide insight on the variations among design alternatives.
keywords building information modeling, interoperability, cost analysis, IFC
series CAAD Futures
email
last changed 2012/02/11 19:21

_id cf2011_p018
id cf2011_p018
authors Sokmenoglu, Ahu; Cagdas Gulen, Sariyildiz Sevil
year 2011
title A Multi-dimensional Exploration of Urban Attributes by Data Mining
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. 333-350.
summary The paper which is proposed here will introduce an ongoing research project aiming to research data mining as a methodology of knowledge discovery in urban feature analysis. To address the increasing multi-dimensional and relational complexity of urban environments requires a multidisciplinary approach to urban analysis. This research is an attempt to establish a link between knowledge discovery methodologies and automated urban feature analysis. Therefore, in the scope of this research we apply data mining methodologies for urban analysis. Data mining is defined as to extract important patterns and trends from raw data (Witten and Frank, 2005). When applied to discover relationships between urban attributes, data mining can constitute a methodology for the analysis of multi-dimensional relational complexity of urban environments (Gil, Montenegro, Beirao and Duarte, 2009) The theoretical motivation of the research is derived by the lack of explanatory urban knowledge which is an issue since 1970’s in the area of urban research. This situation is mostly associated with deductive methods of analysis. The analysis of urban system from the perspective of few interrelated factors, without considering the multi-dimensionality of the system in a deductive fashion was not been explanatory enough. (Jacobs, 1961, Lefebvre, 1970 Harvey, 1973) To address the multi-dimensional and relational complexity of urban environments requires the consideration of diverse spatial, social, economic, cultural, morphological, environmental, political etc. features of urban entities. The main claim is that, in urban analysis, there is a need to advance from traditional one dimensional (Marshall, 2004) description and classification of urban forms (e.g. Land-use maps, Density maps) to the consideration of the simultaneous multi-dimensionality of urban systems. For this purpose, this research proposes a methodology consisting of the application of data mining as a knowledge discovery method into a GIS based conceptual urban database built out of official real data of Beyoglu. Generally, the proposed methodology is a framework for representing and analyzing urban entities represented as objects with properties (attributes). It concerns the formulation of an urban entity’s database based on both available and non-available (constructed from available data) data, and then data mining of spatial and non-spatial attributes of the urban entities. Location or position is the primary reference basis for the data that is describing urban entities. Urban entities are; building floors, buildings, building blocks, streets, geographically defined districts and neighborhoods etc. Urban attributes are district properties of locations (such as land-use, land value, slope, view and so forth) that change from one location to another. Every basic urban entity is unique in terms of its attributes. All the available qualitative and quantitative attributes that is relavant (in the mind of the analyst) and appropriate for encoding, can be coded inside the computer representation of the basic urban entity. Our methodology is applied by using the real and official, the most complex, complete and up-to-dataset of Beyoglu (a historical neighborhood of Istanbul) that is provided by the Istanbul Metropolitan Municipality (IBB). Basically, in our research, data mining in the context of urban data is introduced as a computer based, data-driven, context-specific approach for supporting analysis of urban systems without relying on any existing theories. Data mining in the context of urban data; • Can help in the design process by providing site-specific insight through deeper understanding of urban data. • Can produce results that can assist architects and urban planners at design, policy and strategy levels. • Can constitute a robust scientific base for rule definition in urban simulation applications such as urban growth prediction systems, land-use simulation models etc. In the paper, firstly we will present the framework of our research with an emphasis on its theoretical background. Afterwards we will introduce our methodology in detail and finally we will present some of important results of data mining analysis processed in Rapid Miner open-source software. Specifically, our research define a general framework for knowledge discovery in urban feature analysis and enable the usage of GIS and data mining as complementary applications in urban feature analysis. Acknowledgments I would like to thank to Nuffic, the Netherlands Organization for International Cooperation in Higher Education, for funding of this research. I would like to thank Ceyhun Burak Akgul for his support in Data Mining and to H. Serdar Kaya for his support in GIS.
keywords urban feature analysis, data mining, urban database, urban complexity, GIS
series CAAD Futures
email
last changed 2012/02/11 19:21

_id cf2011_p098
id cf2011_p098
authors Bernal, Marcelo; Eastman Charles
year 2011
title Top-down Approach for Interaction of Knowledge-Based Parametric Objects and Preliminary Massing Studies for Decision Making in Early Design Stages
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. 149-164.
summary Design activities vary from high-degree of freedom in early concept design stages to highly constrained solution spaces in late ones. Such late developments entail large amount of expertise from technical domains. Multiple parallel models handle different aspects of a project, from geometric master models to specific building components. This variety of models must keep consistency with the design intent while they are dealing with specific domains of knowledge such as architectural design, structure, HVAC, MEP, or plumbing systems. Most of the expertise embedded within the above domains can be translated into parametric objects by capturing design and engineering knowledge through parameters, constraints, or conditionals. The aim of this research is capturing such expertise into knowledge-based parametric objects (KPO) for re-usability along the design process. The proposed case study ‚Äì provided by SOM New York‚ is the interaction between a massing study of a high-rise and its building service core, which at the same time handles elevators, restrooms, emergency stairs, and space for technical systems. This project is focused on capturing design expertise, involved in the definition of a building service core, from a high-rise senior designer, and re-using this object for interaction in real-time with a preliminary massing study model of a building, which will drive the adaption process of the service core. This interaction attempts to provide an integrated design environment for feedback from technical domains to early design stages for decision-making, and generate a well-defined first building draft. The challenges addressed to drive the instantiation of the service core according to the shifting characteristics of the high-rise are automatic instantiation and adaptation of objects based on decision rules, and updating in real-time shared parameters and information derived from the high-rise massing study. The interaction between both models facilitates the process from the designer‚Äôs perspective of reusing previous design solutions in new projects. The massing study model is the component that handles information from the perspective of the outer shape design intent. Variations at this massing study model level drive the behavior of the service core model, which must adapt its configuration to the shifting geometry of the building during design exploration in early concept design stages. These variations depend on a list of inputs derived from multiple sources such as variable lot sizes, building type, variable square footage of the building, considerations about modularity, number of stories, floor-to-floor height, total building height, or total building square footage. The shifting combination of this set of parameters determines the final aspect of the building and, consequently, the final configuration of the service core. The service core is the second component involved in the automatic generation of a building draft. In the context of BIM, it is an assembly of objects, which contains other objects representing elevators, restrooms, emergency stairs, and space for several technical systems. This assembly is driven by different layouts depending on the building type, a drop-off sequence, which is the process of continuous reduction of elevators along the building, and how this reduction affects the re-arrangement of the service core layout. Results from this research involves a methodology for capturing design knowledge, a methodology for defining the architecture of smart parametric objects, and a method for real-time-feedback for decision making in early design stages. The project also wants to demonstrate the feasibility of continuous growth on top of existing parametric objects allowing the creation of libraries of smart re-usable objects for automation in design.
keywords design automation, parametric modeling, design rules, knowledge-based design
series CAAD Futures
email
last changed 2012/02/11 19:21

_id ecaade2012_261
id ecaade2012_261
authors Feringa, Jelle; Sondergaard, Asbjorn
year 2012
title Design and Fabrication of Topologically Optimized Structures; An Integral Approach - A Close Coupling Form Generation and Fabrication
doi https://doi.org/10.52842/conf.ecaade.2012.2.495
source Achten, Henri; Pavlicek, Jiri; Hulin, Jaroslav; Matejovska, Dana (eds.), Digital Physicality - Proceedings of the 30th eCAADe Conference - Volume 2 / ISBN 978-9-4912070-3-7, Czech Technical University in Prague, Faculty of Architecture (Czech Republic) 12-14 September 2012, pp. 495-500
summary Integral structural optimization and fabrication seeks the synthesis of two original approaches; that of topological optimization (TO) and robotic hotwire cutting (HWC) (Mcgee 2011). TO allows for the reduction of up to 70% of the volume of concrete to support a given structure (Sondergaard & Dombernowsky 2011). A strength of the method is that it allows to come up with structural designs that lie beyond the grasp of traditional means of design. A design space is a discretized volume, delimiting where the optimization will take place. The number of cells used to discretize the design space thus sets the resolution of the TO. While the approach of the application of TO as a constitutive design tool centers on structural aspects in the design phase (Xie 2010), the outcome of this process are structures that cannot be realized within a conventional budget. As such the ensuing design is optimal in a narrow sense; whilst optimal structurally though, construction can be prove to be prohibitively expensive.
wos WOS:000330320600052
keywords Topology optimization; robotics; hotwire cutting; EPS formwork; concrete structures
series eCAADe
email
last changed 2022/06/07 07:50

_id ecaade2011_033
id ecaade2011_033
authors Kligerman, Brad; Mehdaoui, Jamil
year 2011
title Building Fragile Places: Mixed Reality as an architectural platform
doi https://doi.org/10.52842/conf.ecaade.2011.653
source RESPECTING FRAGILE PLACES [29th eCAADe Conference Proceedings / ISBN 978-9-4912070-1-3], University of Ljubljana, Faculty of Architecture (Slovenia) 21-24 September 2011, pp.653-662
summary This paper will explore the hypothesis that Mixed Reality is a differentiated media and credible framework for the generation, fabrication and communication of projects that are explicitly engaged in design research. This will be shown through a critical presentation of three built and unbuilt projects by Building w/immaterials in the domains of architecture, installation and education. These projects will demonstrate the creative and theoretical application of Mixed Reality from within the differentiated social system of Architecture. While the majority of research into Mixed Reality seems to concern its technical aspects, we will explore its application as a creative system for project development, realization and diffusion.
wos WOS:000335665500076
keywords Architecture; Mixed Reality; Innovation; Virtual Worlds; Media
series eCAADe
email
last changed 2022/05/01 23:21

_id cf2011_p115
id cf2011_p115
authors Pohl, Ingrid; Hirschberg Urs
year 2011
title Sensitive Voxel - A reactive tangible surface
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. 525-538.
summary Haptic and tactile sensations, the active or passive exploration of our built surroundings through our sense of touch, give us a direct feeling and detailed information of space, a sense of architecture (Pallasmaa 2005). This paper presents the prototype of a reactive surface system, which focuses its output on the sense of touch. It explains how touch sensations influence the perception of architecture and discusses potential applications that might arise from such systems in the future. A growing number of projects demonstrate the strong impact of interaction design on the human senses and perception. They offer new ways of sensing and experiencing architectural space. But the majority of these interaction concepts focus on visual and auditory output-effects. The sense of touch is typically used as an input generator, but neglected as as a potential receiver of stimuli. With all the possibilities of sensors and micro-devices available nowadays, there is no longer a technical reason for this. It is possible to explore a much wider range of sense responding projects, to broaden the horizon of sensitive interaction concepts (Bullivant 2006). What if the surfaces of our surroundings can actively change the way it feels to touch them? What if things like walls and furniture get the ability to interactively respond to our touch? What new dimensions of communication and esthetic experience will open up when we conceive of tangibility in this bi-directional way? This paper presents a prototype system aimed at exploring these very questions. The prototype consists of a grid of tangible embedded cells, each one combining three kinds of actuators to produce divergent touch stimuli. All cells can be individually controlled from an interactive computer program. By providing a layering of different combinations and impulse intensities, the grid structure enables altering patterns of actuation. Thus it can be employed to explore a sort of individual touch aesthetic, for which - in order to differentiate it from established types of aesthetic experiences - we have created the term 'Euhaptics' (from the Greek ευ = good and άπτω = touch, finger). The possibility to mix a wide range of actuators leads to blending options of touch stimuli. The sense of touch has an expanded perception- spectrum, which can be exploited by this technically embedded superposition. The juxtaposed arrangement of identical multilayered cell-units offers blending and pattern effects of different touch-stimuli. It reveals an augmented form of interaction with surfaces and interactive material structures. The combination of impulses does not need to be fixed a priori; it can be adjusted during the process of use. Thus the sensation of touch can be made personally unique in its qualities. The application on architectural shapes and surfaces allows the user to feel the sensations in a holistic manner – potentially on the entire body. Hence the various dimensions of touch phenomena on the skin can be explored through empirical investigations by the prototype construction. The prototype system presented in the paper is limited in size and resolution, but its functionality suggests various directions of further development. In architectural applications, this new form of overlay may lead to create augmented environments that let inhabitants experience multimodal touch sensations. By interactively controlling the sensual patterns, such environments could get a unique “touch” for every person that inhabit them. But there may be further applications that go beyond the interactive configuration of comfort, possibly opening up new forms of communication for handicapped people or applications in medical and therapeutic fields (Grunwald 2001). The well-known influence of touch- sensations on human psychological processes and moreover their bodily implications suggest that there is a wide scope of beneficial utilisations yet to be investigated.
keywords Sensitive Voxel- A reactive tangible surface
series CAAD Futures
email
last changed 2012/02/11 19:21

_id acadia11_234
id acadia11_234
authors Chok, Kermin
year 2011
title Progressive Spheres of Innovation: Efficiency, communication and collaboration
doi https://doi.org/10.52842/conf.acadia.2011.234
source ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 234-241
summary Over the last few years, a large majority of construction work has moved overseas. In response to this, our engineering practice has been involved in a large number of Asian and Middle East design competitions, usually executed in a compressed timeframe. Building codes usually include very specific requirements regarding the lateral performance of a building under seismic and wind loads. This is especially true in China. Our structural engineering practice has thus developed a variety of digital tools customized to building code requirements, in order to provide relevant structural feedback in an appropriate design time frame. The paper will discuss our recent digital design work in the context of building code requirements and information sharing. Our innovations have centered on three progressive spheres of innovation: internal efficiency, communication and collaboration. We propose that only with closer and more transparent collaboration will the building industry be effective and efficient in meeting clients’ needs. However, without first addressing a firm’s internal capabilities of efficiency and communication, the firm will be unable to effectively participate in the collaborative process. This paper begins by discussing various custom Rhino-Grasshopper components to facilitate our internal design process. We then touch on the communication realm discussing work in lowering the barriers for information sharing. Lastly, we explore the necessary shifts in thinking required to move beyond linear design exploration and the exciting opportunity to deliver truly innovative design solutions.
series ACADIA
type normal paper
email
last changed 2022/06/07 07:56

_id acadia11_326
id acadia11_326
authors Velikov, Kathy; Thün, Geoffrey; O’Malley, Mary; Ripley, Colin
year 2011
title Toward Responsive Atmospheres: Prototype Exploration through Material and Computational Systems
doi https://doi.org/10.52842/conf.acadia.2011.326
source ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 326-333
summary The Stratus Project is an ongoing body of design research investigating the potential for kinetic, sensing and environment-responsive interior envelope systems. The research emerges from a consideration of our attunement to the soft systems of architecture – light, thermal gradients, air quality and noise – paired with a desire to develop and prototype envelopes that not only perform to affect these atmospheres, but also to promote continual information and material exchange, and eventually dialogue, between occupant and atmosphere. Stratus v1.0 included the construction of a modest prototype using simple open source technologies, aimed to explore the formal, operational and technological possibilities, as well as potential operability and control conflicts, as part of the first phase of thinking around these questions. It deploys a distributed approach to structural, mechanical and communications systems design and delivery, where localized response is prioritized. The project works to reclaim the environmentally performative elements of architecture – in this case, specifically, interior mechanical delivery and interface systems – to within the purview of the discipline, as territories of material, formal, technological and experiential innovation and exploration. This paper will describe both the development of the current prototype as well as future research and investigation trajectories. The Stratus Project begins by situating itself at the crossroads of the disciplinary territories of architecture, technology, environmental control and cybernetics. Through the use of computational technologies and in collaboration with researchers in the fields of computer science, mechanical engineering and materials science, this project aims to advance the development of responsive environmental design and performative building skins.
series ACADIA
type normal paper
email
last changed 2022/06/07 07:58

_id ecaade2011_017
id ecaade2011_017
authors Achten, Henri; Koszewski, Krzysztof; Martens, Bob
year 2011
title What happened after the “Hype” on Virtual Design Studios?: Some Considerations for a Roundtable Discussion
doi https://doi.org/10.52842/conf.ecaade.2011.023
source RESPECTING FRAGILE PLACES [29th eCAADe Conference Proceedings / ISBN 978-9-4912070-1-3], University of Ljubljana, Faculty of Architecture (Slovenia) 21-24 September 2011, pp.23-32
summary The issue of collaborative design has been elaborated extensively within the framework of previous CAAD–conferences. Today, an appreciation for traditional attitudes and methods can be observed, but interestingly, a mixture of approaches is also noticeable (computational techniques used in low–tech fabrication environments, for example). This allows for a round–table survey of the current state–of–the–art focused on experiences related to distant learning in the architectural curriculum. To make VDS viable, not only are technological solutions necessary, but so are social (among people) and professional (ways of behavior) ones. In this round–table we aim to identify critical factors of success (or failure).
wos WOS:000335665500001
keywords Education; architectural curriculum; blended learning; collaborative design; VDS
series eCAADe
email
last changed 2022/05/01 23:21

_id architectural_intelligence2023_11
id architectural_intelligence2023_11
authors Hua Chai & Philip F. Yuan
year 2023
title Hybrid intelligence
doi https://doi.org/https://doi.org/10.1007/s44223-023-00029-w
source Architectural Intelligence Journal
summary Alongside shifts in the technological landscape, the origin of creativity in architectural design has been consistently evolving. According to French philosopher Bernard Stiegler, the architectural design process is never individualistic but rather shaped by the complex interaction between human creativity and what he terms the “pre-individual milieu”, the synthesis of various factors such as cultural heritage, technological innovation (Stiegler, 2016). Over the last three decades, the emergence of digital technologies such as the Internet of Things, virtual reality, and artificial intelligence has significantly enhanced the dynamism and diversity of human–machine communication. With the advancement of digital technologies in the field of architecture, artificial intelligence, machine intelligence, and material intelligence are increasingly integrated into the creative process. In the form of hybrid intelligence, this shift expands the scope of architectural creativity and creative agency beyond the mere intelligent landscape of the human mind. As suggested by architectural theorist Antoine Picon, “another possibility is to consider the pairing of man and machine as a new composite subject……This proposition is suggested by various contemporary reflections on computer technologies and their anthropological dimension” (Picon, 2011).
series Architectural Intelligence
email
last changed 2025/01/09 15:00

_id acadia11_114
id acadia11_114
authors Kaczynski, Maciej P; McGee, Wes; Pigram, David
year 2011
title Robotically Fabricated Thin-shell Vaulting: A method for the integration of multi-axis fabrication processes with algorithmic form-finding techniques
doi https://doi.org/10.52842/conf.acadia.2011.114
source ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 114-121
summary This paper proposes and describes a new methodology for the design, fabrication, and construction of unreinforced thin-shell stone vaulting through the use of algorithmic form-finding techniques and multi-axis robotic water jet cutting. The techniques build upon traditional thin-shell masonry vaulting tectonics to produce a masonry system capable of self-support during construction. The proposed methodology expands the application of thin-shell vaulting to irregular forms, has the potential to reduce the labor cost of vault construction, and opens the possibility of response to external factors such as siting constraints and environmental criteria. The intent of the research is to reignite and reanimate unreinforced compressive masonry vaulting as a contemporary building practice.
keywords masonry vaulting; robotic fabrication; water-jet cutting; multi-axis fabrication; dynamic relaxation; file-to-factory; form-finding; self-supporting; parametric modeling; computational design
series ACADIA
type normal paper
email
last changed 2022/06/07 07:52

_id cf2011_p073
id cf2011_p073
authors Nasirova, Diliara; Erhan Halil, Huang Andy T, Woodbury Robert, Riecke Bernhard E.
year 2011
title Change Detection in 3D Parametric Systems: Human-Centered Interfaces for Change Visualization
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. 751-764.
summary The research on current parametric modeling systems concerns mainly about the underlying computational technology and designs produced; and emphasizes less human factors and design tasks. We observe users being challenged in interacting with these systems regardless of their expertise level. In these systems, user’s attention is divided on system-imposed actions such as tool selection and set-up, managing obscured views, frequent view manipulation, and switching between different types of representations. In essence, control of the system can become more demanding than the design task itself. We argue that this unbalanced emphasis inhibits one of the most important functions of parametric design: agility in exploration of design alternatives by applying frequent user-introduced or system-generated changes on the parametric design models. This compounded by the effect of cognitive limitations such as change blindness and shifts in locus of attention hinders change control and imposes an extra cognitive load in design. In this paper, we made a first step in developing a set of heuristics that is going to present how designers’ change control and detection can be improved. We experimented with three interfaces that control and visualize changes on three different compositions in relation to the designer’s locus of attention: on-model, peripheral and combined views. We measured designers’ performance as the number of changes detected, number of trials, and time required to complete each change detection task. The results support our hypothesis that change blindness significantly slows down and overloads design thinking, and thus should not be ignored. Furthermore, an interesting finding shows that visualizations on the visual periphery can equally support change detection as on-model visualizations, but it is significantly easier and faster to detect changes when they are visualized in both views. These findings can guide us to develop better interfaces in 3D parametric systems.
keywords parametric design, change detection, change blindness, user-centered design, interface ergonomics, HCI, CAD, visualization
series CAAD Futures
email
last changed 2012/02/11 19:21

_id eaea2009_ohno_wada
id eaea2009_ohno_wada
authors Ohno, Ryuzo; Yohei Wada
year 2011
title Visibility of Guide Signs for Pedestrians in Motion: An Application of an Immersive Visual Simulation System
source Projecting Spaces [Proceedings of the 9th European Architectural Endoscopy Association Conference / ISBN 978-3-942411-31-8 ], pp. 107-114
summary When we visit a complex railway station or a large shopping mall, we rely on guide signs to find our destination. These are not always helpful, however, since the sheer number of signs around us may distract us from picking up the necessary information. The presence of other pedestrians also adds to the difficulty by blocking our view. In crowded situations where we cannot disturb pedestrian flow, we must moreover be able to read signs while walking and paying attention to the people ahead. With the above in mind, the present study uses an immersive visual simulation system to examine the influence of observation conditions on sign detection and recognition by pedestrians in motion. Two experiments were performed for the present study. The first examined the readable range (readability threshold) of three types of sign lettering in motion. This served to determine conditions for the second experiment as well as to test the performance of the immersive visual simulation system. The system displays wide-angle images (180 degrees both vertically and horizontally) capable of filling viewers’ peripheral vision; viewers may also gain stereoscopic vision through the use of polarizing glasses. The second experiment examined the influence of various observation conditions on sign detection and recognition while in motion. The virtual experimental space, made to resemble a concourse in a large railway station, was 15 m wide and 3.5 m high. The subjects, nine university students, were asked to detect the target that was assigned one of the eight figures while moving through the virtual space at a walking speed (1.5m/s) and to tap a keyboard at hand when the target was detected. At the moment of the subject’s response, the distance between the observation point and the target in the virtual space was recorded. The factors tested were sign layout (density, aggregation, alignment) and presence of other pedestrians. The degree of influence of a factor was determined by analyzing the detection distance for a comparison stimulus versus for a standard stimulus as well as the ratio of targets detected. The experiments revealed that the readability of figures viewed in motion may differ from when they are viewed under static conditions. The following factors were found to be relevant to sign detection and recognition while in motion: 1) density of signs (amount of visual information), 2) smoothness of eye movement from one sign to another, and 3) allocation of visual attention. Although the results were obtained in virtual experimental settings, and the absolute numerical values therefore have limited meaning, the results nonetheless empirically clarify some of the mechanisms involved in the detection and recognition of guide signs by pedestrians.
series other
more http://info.tuwien.ac.at/eaea
last changed 2011/03/04 08:45

_id caadria2011_041
id caadria2011_041
authors Pérez, Edgar and Tomás Dorta
year 2011
title Assessment of design tools for ideation
doi https://doi.org/10.52842/conf.caadria.2011.429
source Proceedings of the 16th International Conference on Computer Aided Architectural Design Research in Asia / The University of Newcastle, Australia 27-29 April 2011, pp. 429-438
summary Designers interact with a wide range of design tools, in a variety of ways, in order to support their work. Any attempt to produce digital tools aimed at supporting ideation raises the question of the kind of information considered account and what is appropriate to the needs and expectations of designers. We developed and implemented an assessment method for digitally supported conceptual design based on reflective conversation, flow, cognitive ergonomics and activity theory. Our approach opens up the evaluation spectrum to include parameters beyond performances factors for conceiving new digital design tools. This assessment approach considers user (the designer), action (ideation) and object (the tool) in the ideation process, namely the designer’s experience interrelated to the needs of the task and the characteristics of the tool. In this paper we present the results of several research protocols in which we observed, analyzed and successively acted upon five different stages of the interface of a design tool as it was being developed, the Hybrid Ideation Space (HIS). Taken as a whole, these results suggest the limits and support of designers’ optimal relationship with an ideation interface.
keywords Ideation; assessment method; design tools; human computer interaction
series CAADRIA
email
last changed 2022/06/07 07:58

_id caadria2011_030
id caadria2011_030
authors Tan, Beng-Kiang and Jung-Ho Yeom
year 2011
title Mirrored message wall: Bridging the real and virtual community
doi https://doi.org/10.52842/conf.caadria.2011.311
source Proceedings of the 16th International Conference on Computer Aided Architectural Design Research in Asia / The University of Newcastle, Australia 27-29 April 2011, pp. 311-320
summary The Mirrored Message Wall is a cross-world digital public display located in both real and virtual world, for collective sharing of thoughts and messages and serves to connect the real world and virtual communities. The wall was installed at a university library foyer and concurrently at a 3D virtual campus for user studies. This paper presents its design, social factors considered in the design, implementation, and the findings of the user survey and observations. The results confirm that such an installation does encourage people to interact with each other and the results will inform a better design for the next version.
keywords Virtual environment; second life; interactive message wall; public display; social interaction
series CAADRIA
email
last changed 2022/06/07 07:56

_id acadia11_82
id acadia11_82
authors Ahlquist, Sean; Menges, Achim
year 2011
title Behavior-based Computational Design Methodologies: Integrative processes for force defined material structures
doi https://doi.org/10.52842/conf.acadia.2011.082
source ACADIA 11: Integration through Computation [Proceedings of the 31st Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA)] [ISBN 978-1-6136-4595-6] Banff (Alberta) 13-16 October, 2011, pp. 82-89
summary With the introduction of physics-based algorithms and modeling environments, design processes have been shifting from the representation of materiality to the simulation of approximate material descriptions. Such computational processes are based upon enacting physical and material behavior, such as gravity, drag, tension, bending, and inflation, within a generative modeling environment. What is often lacking from this strategy is an overall understanding of computational design; that information of increasing value and precision is generated through the development and iterative execution of specific principles and integrative mechanisms. The value of a physics-based modeling method as an information engine is often overlooked, though, as they are primarily utilized for developing representational diagrams or static geometry – inevitably translated to function outside of the physical bounds and parameters defined with the modeling process. The definition of computational design provides a link between process and a larger approach towards architecture – an integrative behavior-based process which develops dynamic specific architectural systems interrelated in their material, spatial, and environmental nature. This paper, focusing on material integration, describes the relation of a computational design approach and the technical framework for a behavior-based integrative process. The application is in the development of complex tension-active architectural systems. The material behavior of tensile meshes and surfaces is integrated and algorithmically calibrated to allow for complex geometries to be materialized as physical systems. Ultimately, this research proposes a computational structure by which material and other sorts of spatial or structural behaviors can be activated within a generative design environment.
series ACADIA
type normal paper
email
last changed 2022/06/07 07:54

_id sigradi2011_332
id sigradi2011_332
authors Berns, Torben; Nguyen, Philam
year 2011
title The Subject on the Table: Augmented Reality and the Technical Image
source SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 571-574
summary This paper approaches the dilemma of the technical image as it relates to an understanding of the constructed subject. Proceeding from a condition identified in film and popular culture, the authors construct an investigative, graduate level workshop around a collaborative interface and archive. The project was premised upon the notion that a new ground, based in visualization processes and incorporating existing technologies, must be practically and critically explored to make any sense at all of the subjectivity already coeval with these technologies.
keywords Technical image; subjectivity; collaborative work; sensus communis
series SIGRADI
email
last changed 2016/03/10 09:47

_id cf2011_p043
id cf2011_p043
authors Boeykens, Stefan
year 2011
title Using 3D Design Software, BIM and Game Engines for Architectural Historical Reconstruction
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. 493-509.
summary The use of digital tools has become a tremendous aid in the creation of digital, historical reconstructions of architectural projects. Regular visualization techniques have been used for quite some time and they still pose interesting approaches, such as following cinematic techniques [1]. While common visualizations focus on pre-rendered graphics, it is possible to apply Game Engines [2] for real-time architectural visualization, as witnessed by [3] and [4]. In the course of our teaching and research efforts, we have collected experience with several visualization and modeling techniques, including the use of gaming engines. While the modeling of qualitative geometry for use in regular visualization already poses an elaborate effort, the preparation of models for different uses is often not trivial. Most modeling systems only support the creation of models for a single amount of detail, whereas an optimized model for a real-time system will have fairly different constraints when compared to non-real-time models for photorealistic rendering and animation. The use of parametric methods is one usable approach to tackle this complexity, as illustrated in [4]. One of the major advantages of using parametric approaches lies precisely in the possibility of using a single model to generate different geometry with control over the amount of detail. We explicitly tackle this in a Building Information Modeling (BIM) context, as to support much more than purely 3D geometry and visualization purposes. An integrated approach allows the same model to be used for technical drawings in 2D and an optimized 3D model in varying levels of detail for different visualization purposes. However, while most Building Information Modeling applications are targeted to current architectural practice, they seldom provide sufficient content for the recreation of historical models. This thus requires an extensive library of parametric, custom objects to be used and re-used for historically accurate models, which can serve multiple purposes. Finally, the approach towards the historical resources also poses interpretation problems, which we tackled using a reasonably straightforward set up of an information database, collecting facts and accuracies. This helps in the visualization of color-coded 3D models, depicting the accuracy of the model, which is a valuable graphical approach to discuss and communicate information about the historical study in an appealing format. This article will present the results of different reconstruction case studies, using a variety of design applications and discuss the inherent complexity and limitations in the process of translating an active, evolving model into an environment suitable for use in a real-time system. Especially workflow issues are identified, as the translation of the model into the game engine should be repeated several times, when the model is further refined and adapted. This used to involve a large amount of repetitive work, but the current crop of game engines have much better approaches to manage the updating of the geometry.
keywords Real-time architecture, game engines, cultural heritage, digital reconstruction, parametric modeling, Building Information Modeling
series CAAD Futures
email
last changed 2012/02/11 19:21

_id caadria2011_015
id caadria2011_015
authors Davis, Daniel; Flora Dilys Salim and Jane Burry
year 2011
title Designing responsive architecture: Mediating analogue and digital modelling in the studio
doi https://doi.org/10.52842/conf.caadria.2011.155
source Proceedings of the 16th International Conference on Computer Aided Architectural Design Research in Asia / The University of Newcastle, Australia 27-29 April 2011, pp. 155-164
summary Prototyping digitally responsive architecture requires that architects know how to program and design electronics. Normally they don’t. The challenge for teachers is to teach these skills whilst maintaining a focus on the design potentials of responsive architecture. One method is to teach students to use Input-Output-Process (IPO) diagrams and parametric modelling as pathways into the logic of responsive architecture. The paper discusses the work of students taught this way during a semester long elective. Our analysis shows that IPO diagrams lead to reactive architecture, which matches the current technical limitations of responsive architecture. We argue that mediating analogue and digital models is an essential aspect to successful responsive architecture.
keywords Responsive architecture; physical interaction; education; parametric design
series CAADRIA
email
last changed 2022/06/07 07:55

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