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	acadia12_47
id	acadia12_47
authors	Aish, Robert ; Fisher, Al ; Joyce, Sam ; Marsh, Andrew
year	2012
title	Progress Towards Multi-Criteria Design Optimisation Using Designscript With Smart Form, Robot Structural Analysis and Ecotect Building Performance Analysis"
source	ACADIA 12: Synthetic Digital Ecologies [Proceedings of the 32nd Annual Conference of the Association for Computer Aided Design in Architecture (ACADIA) ISBN 978-1-62407-267-3] San Francisco 18-21 October, 2012), pp. 47-56
doi	https://doi.org/10.52842/conf.acadia.2012.047
summary	Important progress towards the development of a system that enables multi-criteria design optimisation has recently been demonstrated during a research collaboration between Autodesk’s DesignScript development team, the University of Bath and the engineering consultancy Buro Happold. This involved integrating aspects of the Robot Structural Analysis application, aspects of the Ecotect building performance application and a specialist form finding solver called SMART Form (developed by Buro Happold) with DesignScript to create a single computation environment. This environment is intended for the generation and evaluation of building designs against both structural and building performance criteria, with the aim of expediently supporting computational optimisation and decision making processes that integrate across multiple design and engineering disciplines. A framework was developed to enable the integration of modeling environments with analysis and process control, based on the authors’ case studies and experience of applied performance driven design in practice. This more generalised approach (implemented in DesignScript) enables different designers and engineers to selectively configure geometry definition, form finding, analysis and simulation tools in an open-ended system without enforcing any predefined workflows or anticipating specific design strategies and allows for a full range of optimisation and decision making processes to be explored. This system has been demonstrated to practitioners during the Design Modeling Symposium, Berlin in 2011 and feedback from this has suggested further development.
keywords	Design Optimisation , Scripting , Form Finding , Structural Analysis , Building Performance
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:54

_id	cf2011_p170
id	cf2011_p170
authors	Barros, Mário; Duarte José, Chaparro Bruno
year	2011
title	Thonet Chairs Design Grammar: a Step Towards the Mass Customization of Furniture
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. 181-200.
summary	The paper presents the first phase of research currently under development that is focused on encoding Thonet design style into a generative design system using a shape grammar. The ultimate goal of the work is the design and production of customizable chairs using computer assisted tools, establishing a feasible practical model of the paradigm of mass customization (Davis, 1987). The current research step encompasses the following three steps: (1) codification of the rules describing Thonet design style into a shape grammar; (2) implementing the grammar into a computer tool as parametric design; and (3) rapid prototyping of customized chair designs within the style. Future phases will address the transformation of the Thonet’s grammar to create a new style and the production of real chair designs in this style using computer aided manufacturing. Beginning in the 1830’s, Austrian furniture designer Michael Thonet began experimenting with forming steam beech, in order to produce lighter furniture using fewer components, when compared with the standards of the time. Using the same construction principles and standardized elements, Thonet produced different chairs designs with a strong formal resemblance, creating his own design language. The kit assembly principle, the reduced number of elements, industrial efficiency, and the modular approach to furniture design as a system of interchangeable elements that may be used to assemble different objects enable him to become a pioneer of mass production (Noblet, 1993). The most paradigmatic example of the described vision of furniture design is the chair No. 14 produced in 1858, composed of six structural elements. Due to its simplicity, lightness, ability to be stored in flat and cubic packaging for individual of collective transportation, respectively, No. 14 became one of the most sold chairs worldwide, and it is still in production nowadays. Iconic examples of mass production are formally studied to provide insights to mass customization studies. The study of the shape grammar for the generation of Thonet chairs aimed to ensure rules that would make possible the reproduction of the selected corpus, as well as allow for the generation of new chairs within the developed grammar. Due to the wide variety of Thonet chairs, six chairs were randomly chosen to infer the grammar and then this was fine tuned by checking whether it could account for the generation of other designs not in the original corpus. Shape grammars (Stiny and Gips, 1972) have been used with sucesss both in the analysis as in the synthesis of designs at different scales, from product design to building and urban design. In particular, the use of shape grammars has been efficient in the characterization of objects’ styles and in the generation of new designs within the analyzed style, and it makes design rules amenable to computers implementation (Duarte, 2005). The literature includes one other example of a grammar for chair design by Knight (1980). In the second step of the current research phase, the outlined shape grammar was implemented into a computer program, to assist the designer in conceiving and producing customized chairs using a digital design process. This implementation was developed in Catia by converting the grammar into an equivalent parametric design model. In the third phase, physical models of existing and new chair designs were produced using rapid prototyping. The paper describes the grammar, its computer implementation as a parametric model, and the rapid prototyping of physical models. The generative potential of the proposed digital process is discussed in the context of enabling the mass customization of furniture. The role of the furniture designer in the new paradigm and ideas for further work also are discussed.
keywords	Thonet; furniture design; chair; digital design process; parametric design; shape grammar
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	ijac20109204
id	ijac20109204
authors	Shepherd, Paul; Roly Hudson, David Hines
year	2011
title	Aviva Stadium: A parametric success
source	International Journal of Architectural Computing vol. 9 - no. 2, 167-186
summary	The Aviva Stadium, Dublin, is the first stadium to be designed from start to finish using commercially available parametric modelling software. A single model in Bentley’s Generative Components was shared between architects and engineers, which allowed the optimised design of form, structure and fac_ade. The parametric software was extended where necessary to integrate with structural analysis and to automate fabrication. By reducing the overhead associated with design iterations, this approach allowed detailed exploration of options and early identification and resolution of potential problems. In this paper, the authors add to the body of scientific knowledge by describing in detail the methods which led to the construction of the Aviva Stadium.This paper is written in light of the completed building and provides information on the generation and control of the envelope geometry, development and analysis of structure and documentation for construction.Whilst these components have been discussed independently previously [1–4], here these aspects are drawn together for the first time and are presented alongside thoughts on the manufacturing and construction processes from the project architect.
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	sigradi2011_264
id	sigradi2011_264
authors	Araneda, Claudio
year	2011
title	Hacia un Estudio del Protofenómeno Urbano: Rudimentos Analíticos para una Aproximación Fenoménica al Estudio de la Percepción de Seres Humanos en el Espacio Urbano [Towards a Study of the Urban Protophenomenon: Analytical Rudiments for a Phenomenological Approximation to the Study of the Perception of Human Beings in Urban Space]
source	SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 534-537
summary	This work outlines the theoretical and methodological framework for the development of analytical rudiments contributing to the registry, cartography and quantification of the urban phenomenon understood not as urban space perception but rather, as human beings perception within urban space. It argues that this approach to urban studies is part of a scarcely explored lineage within the field of urban analysis. One that, much in the same way as the widely used topological/ structural approach, reveals key quantifiable information, mainly, in terms of real or effective density and therefore, of high value for the design of micro and meso urban scales.
keywords	Urban phenomenon; urban protophenomenon; phenomenology, urban analysis, space syntax
series	SIGRADI
email
last changed	2016/03/10 09:47

_id	ecaade2011_145
id	ecaade2011_145
authors	Araújo, Leandro; Andrés, Roberto
year	2011
title	BIM.BON . A BIM system for architectural practice in Brazil
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.439-443
doi	https://doi.org/10.52842/conf.ecaade.2011.439
wos	WOS:000335665500050
summary	This article discusses the difficulties faced by the BIM (Building Information Modeling) systems to be widely adopted among most part of architecture and engineering professionals in Brazil. A revision of the issue and investigation of possibilities for improving the practice of architecture were made by creating a new model of BIM software addressed to a wider audience. It lists the main critical points in the usability of BIM software, based on a survey made with 300 professionals. The analysis is followed by a study of a new BIM software that could reach a wider audience of architects by implementing a tool that directly links the users to the construction materials market, also including a tool for easy budgetary calculations.
keywords	BIM Software; Architectural design; Architecture in Brazil; ICT; Collaborative design
series	eCAADe
email
last changed	2022/05/01 23:21

_id	ecaade2011_053
id	ecaade2011_053
authors	Barros, Mário; Duarte, José P.; Chaparro, Bruno
year	2011
title	Digital Thonet: An automated system for the generation and analysis of custom-made chairs
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.521-529
doi	https://doi.org/10.52842/conf.ecaade.2011.521
wos	WOS:000335665500060
summary	A system is presented to support the designer in creating custom versions of chairs within a predefined design language using Thonet chairs as a case study. The system consists of parametric models based on shape grammars linked to structural analysis to provide an integrated generative process for mass customization in the furniture industry.
keywords	Thonet; furniture design; finite element method; parametric design; mass customization
series	eCAADe
email
last changed	2022/05/01 23:21

_id	caadria2011_002
id	caadria2011_002
authors	Bernal, Marcelo
year	2011
title	Analysis model for incremental precision along design stages
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. 19-18
doi	https://doi.org/10.52842/conf.caadria.2011.019
summary	With current energy analysis tools, architects and engineers cannot rely on the results of energy analyses because they do not report their level of precision. In addition, current tools also do not deliver feedback in real time. Thus, this research addresses the challenge of obtaining feedback in real-time while gradually increasing precision along design stages. For this purpose, this study merges parametric modelling (PM) technologies and the performance-based design (PBD) paradigm into a general design model. The model is based on a parametric and an energy analysis model that share the parameters of a building. The modular architecture of the model involves four main function types: an input processor, optional analysis functions embedding different calculation methods, a decision-maker, and a report generator function. For every step of the design evolution, the decisionmaker function generates a specific tree of analysis functions.
keywords	Performance; decision-making; extensibility; knowledgebased design; design automation
series	CAADRIA
email
last changed	2022/06/07 07:52

_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	acadia11_138
id	acadia11_138
authors	Buell, Samantha; Shaban, Ryan; Corte, Daniel; Beorkrem, Christopher
year	2011
title	Zero-waste, Flat Pack Truss Work: An Investigation of Responsive Structuralism
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. 138-143
doi	https://doi.org/10.52842/conf.acadia.2011.138
summary	The direct and rapid connections between scripting, modeling and prototyping allow for investigations of computation in fabrication. The manipulation of planar materials with two-dimensional CNC cuts can easily create complex and varied forms, volumes, and surfaces. However, the bulk of research on folding using CNC fabrication tools is focused upon surfaces, self-supporting walls and shell structures, which do not integrate well into more conventional building construction models.This paper attempts to explain the potential for using folding methodologies to develop structural members through a design-build process. Conventional building practice consists of the assembly of off-the-shelf parts. Many times, the plinth, skeleton, and skin are independently designed and fabricated, integrating multiple industries. Using this method of construction as an operative status quo, this investigation focused on a single structural component: the truss. A truss is defined as: “A triangulated arrangement of structural members that reduces nonaxial external forces to a set of axial forces in its members.” (Allen and Iano 2004)Using folding methodologies and sheet steel to create a truss, this design investigation employed a recyclable and prolific building material to redefine the fabrication of a conventional structural member. The potential for using digital design and two-dimensional CNC fabrication tools in the design of a foldable truss from sheet steel is viable in the creation of a flat-packed, minimal waste structural member that can adapt to a variety of aesthetic and structural conditions. Applying new methods to a component of the conventional ‘kit of parts’ allowed for a novel investigation that recombines zero waste goals, flat-packing potential, structural expression and computational processes.
series	ACADIA
type	normal paper
email
last changed	2022/06/07 07:54

_id	b339
id	b339
authors	Bunster, Victor
year	2011
title	Tropism-oriented generative design: Analogical models for heterogeneous goal integration
source	Master of Philosophy (MPhil) Thesis. Faculty of Architecture, Building and Planning, The University of Melbourne.
summary	Architecture often requires integration between heterogeneous objectives. Both empirical requirements and speculative aspirations inform design in ways that resist ready formalization under computerizable logic. This thesis explores the possibilities of tropism-analogy as strategy for tackling some of these diverse objectives in a generative system. The feasibility of addressing heterogeneous goals with a computerizable design system is established by reviewing the role of rule-based strategies in vernacular tradition and the possibilities of analogies in recent generative methods. Then, the concept of tropism is analysed in depth, starting from its origins to its manifestation in a broad range of disciplines. This analysis leads to the definition of tropism as a ‘process of turn’ that enables purposeful connections between a system and its environment, an invariant property that may result in different levels of adaptation. These generalized conditions are used as conceptual foundation to explore analogical connections between divergent dimensions of architectural problems, and to define a feedback-enabled generative system that uses tropism-inspired rules in tackling contrasting design objectives. This system is implemented as a proof-of-concept for the Chilean social housing program, where is used to generate façade prototypes that respond simultaneously to thermal comfort and formal expression criteria. The outcomes of this thesis suggest that tropism-analogy can be used in tackling heterogeneous façade objectives and, therefore, to define novel design methods to explore goal-integration in computer-based generative architecture systems.
keywords	generative architecture, design computation, tropism analogy, goal integration, social housing
series	thesis:MSc
type	normal paper
email
more	http://dtl.unimelb.edu.au/R/98KH7M6SLEUI1J2GUA82K5A1AQSR7NK9HMI4GPCRJGFAEYDGHF-01472?func=dbin-jump-full&object_id=277253&local_base=GEN01&pds_handle=GUEST
last changed	2012/07/06 17:57

_id	acadia11_234
id	acadia11_234
authors	Chok, Kermin
year	2011
title	Progressive Spheres of Innovation: Efficiency, communication and collaboration
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
doi	https://doi.org/10.52842/conf.acadia.2011.234
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	cf2011_p051
id	cf2011_p051
authors	Cote, Pierre; Mohamed-Ahmed Ashraf, Tremblay Sebastien
year	2011
title	A Quantitative Method to Compare the Impact of Design Mediums on the Architectural Ideation Process.
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. 539-556.
summary	If we compare the architectural design process to a black box system, we can assume that we now know quite well both inputs and outputs of the system. Indeed, everything about the early project either feasibility studies, programming, context integration, site analysis (urban, rural or natural), as well as the integration of participants in a collaborative process can all be considered to initiate and sustain the architectural design and ideation process. Similarly, outputs from that process are also, and to some extent, well known and identifiable. We are referring here, among others, to the project representations or even to the concrete building construction and its post-evaluation. But what about the black box itself that produces the ideation. This is the question that attempts to answer the research. Currently, very few research works linger to identify how the human brain accomplishes those tasks; how to identify the cognitive functions that are playing this role; to what extent they operate and complement each other, and among other things, whether there possibly a chain of causality between these functions. Therefore, this study proposes to define a model that reflects the activity of the black box based on the cognitive activity of the human brain. From an extensive literature review, two cognitive functions have been identified and are investigated to account for some of the complex cognitive activity that occurs during a design process, namely the mental workload and mental imagery. These two variables are measured quantitatively in the context of real design task. Essentially, the mental load is measured using a Bakan's test and the mental imagery with eyes tracking. The statistical software G-Power was used to identify the necessary subject number to obtain for significant variance and correlation result analysis. Thus, in the context of an exploratory research, to ensure effective sample of 0.25 and a statistical power of 0.80, 32 participants are needed. All these participants are students from 3rd, 4th or 5th grade in architecture. They are also very familiar with the architectural design process and the design mediums used, i.e., analog model, freehand drawing and CAD software, SketchUp. In three experimental sessions, participants were asked to design three different projects, namely, a bus shelter, a recycling station and a public toilet. These projects were selected and defined for their complexity similarity, taking into account the available time of 22 minutes, using all three mediums of design, and this in a randomly manner to avoid the order effect. To analyze the two cognitive functions (mental load and mental imagery), two instruments are used. Mental imagery is measured using eye movement tracking with monitoring and quantitative analysis of scan paths and the resulting number and duration of participant eye fixations (Johansson et al, 2005). The mental workload is measured using the performance of a modality hearing secondary task inspired by Bakan'sworks (Bakan et al.; 1963). Each of these three experimental sessions, lasting 90 minutes, was composed of two phases: 1. After calibrating the glasses for eye movement, the subject had to exercise freely for 3 minutes while wearing the glasses and headphones (Bakan task) to get use to the wearing hardware. Then, after reading the guidelines and criteria for the design project (¬± 5 minutes), he had 22 minutes to execute the design task on a drawing table allowing an upright posture. Once the task is completed, the subject had to take the NASA TLX Test, on the assessment of mental load (¬± 5 minutes) and a written post-experimental questionnaire on his impressions of the experiment (¬± 10 minutes). 2. After a break of 5-10 minutes, the participant answered a psychometric test, which is different for each session. These tests (¬± 20 minutes) are administered in the same order to each participant. Thus, in the first experimental session, the subject had to take the psychometric test from Ekstrom et al. (1978), on spatial performance (Factor-Referenced Cognitive Tests Kit). During the second session, the cognitive style is evaluated using Oltman's test (1971). Finally, in the third and final session, participant creativity is evaluated using Delis-Kaplan test (D-KEFS), Delis et al. (2001). Thus, this study will present the first results of quantitative measures to establish and validate the proposed model. Furthermore, the paper will also discuss the relevance of the proposed approach, considering that currently teaching of ideation in ours schools of architecture in North America is essentially done in a holistic manner through the architectural project.
keywords	design, ideation process, mental workload, mental imagery, quantitative mesure
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	caadria2011_069
id	caadria2011_069
authors	Fernando, Ruwan; James Steel and Robin Drogemuller
year	2011
title	Using domain specific languages in the Building Information Modelling workflow
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. 731-740
doi	https://doi.org/10.52842/conf.caadria.2011.731
summary	The design of architecture, in practice, entails the collaboration of many disciplines each with their own set of tools and representations. Building Information Models aim to support interoperability between these disciplines. However current implementations require a lot of manual work involving translating parts from the various specialised descriptions to the common model format. Domain Specific Languages are a development from Information Technology that defines a mapping from the concepts used in one discipline to those used in another. In this paper, a workflow incorporating the movement between specialised languages and a central model is described. The central model is structured using the Industrial Foundation Classes (IFC). The motivation for elaborating on the interdisciplinary workflow is the desire to create a more iterative process without the need for the manual recreation of models. While it is difficult to have a description or language that contains all the information of all the disciplines, this research demonstrates how the IFC schema acts as a pivot not just between data sets, but also between concepts expressed in different representations thus giving from analysis to design.
keywords	Building Information Model; BIM; domain-specific languages; lighting; spatial planning; parametric modelling
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	caadria2011_068
id	caadria2011_068
authors	Garagnani, Simone
year	2011
title	Packing the “Chinese box”: A strategy to manage knowledge using architectural digital models
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. 717-726
doi	https://doi.org/10.52842/conf.caadria.2011.717
summary	The architectural design activity has been transformed due to technological advances in building knowledge management. The research proposed is based on a three years long Ph.D. work on 3D models intended as graphical informative systems, layered according to the “Chinese box” paradigm and destined to professionals and researchers in architecture. The applied case study is referred to San Vitale’s church in Ravenna, Italy: the monument was investigated through nested digital models produced by different computer programs. Passing through evolutionary steps identified as synthesis, reduction and projection, the resulting archive lowered its Complication Ratio, a numerical value inspired by fractal’s auto-similarity, indicating a recursive modification in morphologies and contents. Models so conceived are qualified as progressive knowledge-based catalogues easily interchangeable and useful to understand how new or existing architectures work. As a result of this approach, representations obtained with surveys, historical chronicles, light analysis and acoustic simulations were composed following gradual refinements: technical data were collected running parallel to bibliographic research, enriching interactive virtual models sprung from a recursive criterion destined to increase the information enclosed into an undivided, lossless, digital archive.
keywords	3D modelling; virtual architecture; BIM; CAAD; information database
series	CAADRIA
email
last changed	2022/06/07 07:50

_id	sigradi2011_405
id	sigradi2011_405
authors	García Alvarado, Rodrigo; Lyon Gottlieb, Arturo
year	2011
title	De la Optimización Estructural Evolutiva al Diseño Paramétrico basado en desempeño; experiencias en plataformas integradas para estrategias de diseño multidisciplinares [From Evolutionary Structural Optimization to performance driven Parametric Design; experiences on integrated platforms for multidisciplinary design strategies]
source	SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 201-205
summary	This paper presents a research developed by a multidisciplinary team looking into the use of Topological Optimization and its integration to collaborative design platforms in early stages of design processes. The interest of the experience is focused on how Evolutionary Structural Optimization (ESO) models can be further integrated into parametric design software for the definition of adaptable components in response to environmental and architectural criteria. This research explores platforms and processes for the collaboration between software development, structural engineers and architects in early stages of design as a possibility to relate the potential of computational processes with the definition of design criteria involving architectural, structural and environmental parameters.
keywords	Evolutionary Structural Optimization; Topological Analysis; Parametric Design; Performance Driven Design
series	SIGRADI
email
last changed	2016/03/10 09:52

_id	cf2011_p145
id	cf2011_p145
authors	Georgiou, Odysseas
year	2011
title	Interactive Structural Analysis
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. 833-846.
summary	This paper re-approaches structural engineering through an interactive perspective by introducing a series of tools that concatenate parametric design with structural analysis, thus achieving interoperability between form and its structural performance. Parametric Design is linked to Structural Analysis using computer programming to establish a common interactive framework that leads to performance based designs that respond to structural constrains and conditions in an interactive manner. A series of examples illustrate the synergy between form and structure by interactively modelling, analysing and visualizing its response.
keywords	Structural engineering, parametric design, interoperability,free form,interactive,analysis
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	sigradi2011_267
id	sigradi2011_267
authors	Hamuy Pinto, Eduardo; Galaz, Mirtha
year	2011
title	Preguntas Aumentadas: medios enriquecidos y el acto de preguntar [Augmented questions: Rich media and asking]
source	SIGraDi 2011 [Proceedings of the 15th Iberoamerican Congress of Digital Graphics] Argentina - Santa Fe 16-18 November 2011, pp. 448-451
summary	Tutorials are widely used for learning technical mattersin architecture and design courses. This is a case study of questions from a student and answers provided by a teacher. The communication medium used was Screenr©, a web application for creating short screencasts. A sequence of screencasts was analyzed from a qualitative perspective, using Media Richness Theory and an e-learning model as framework. Ambiguity and Equivocality are managed through a rich medium that allows communication of precise data and paralinguistic cues. Visual deictic gestures (from the users) and visual cues provided by the interfaceare fundamental for building understanding.
keywords	Teaching; videotutorials; media richness; screencasts; qualitative analysis
series	SIGRADI
email
last changed	2016/03/10 09:53

_id	cf2011_p049
id	cf2011_p049
authors	Hii Jun Chung, Daniel; Chye Kiang Heng, Lai Choo Malone Lee, Ji Zhang
year	2011
title	Analyzing the Ventilation Performance of Tropical High Density Residential Precincts using Computational Fluid Dynamics
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. 351-366.
summary	Major cities in the world are getting bigger as they continue to grow to cater for more population increase. These cities normally forced the urban planning to go high density. In the tropical context, high density cities like Singapore and Hong Kong do not have the luxury of space to go low rise and compact. These cities have to build to the floor area ratio of 4 and above to cater for the population. Their only solution is to go up, as high as possible, to the extent that the natural wind flow pattern will be altered, which brings environmental impact to the people. This is generally not good since wind flow helps to maintain the thermal comfort of the people as heat and pollutants are being channeled out of the city to avoid Urban Heat Island effect. In the tropical context, wind flow is crucial to maintain people‚Äôs comfort as the temperature is generally very high from the exposure of the sun for the entire year. Studies have shown that wind flow plays the most significant part in maintaining human comfort despite exposing to direct sunlight in the tropics. Therefore, wind flow analysis is extremely crucial to make the design sustainable and energy efficient, as people will not have to depend on mechanical ventilation to compensate for the lack of wind flow. Computational Fluid Dynamics (CFD) has always been used in the field of architecture, urban design and urban planning to understand the patterns of wind flow through the built environment apart from wind tunnel tests. The availability of more powerful hardware for the mainstream computer users as well as the lowering costs of these computers made CFD more possible to be adopted in the design world today. This also means using CFD in the design process, especially to analyze the impact of the design to the current site conditions and annual wind patterns will help the new design to be more responsive to the site. The interest of this paper is to analyze the high density typologies to see how well they respond to the local wind flow pattern. A typology is considered acceptable when the wind flow going through the site is still maintaining acceptable wind speed. This means it does not block off the wind and create stagnant spaces. Different designs generate different typologies which will respond differently to the wind pattern. The study aims at comparing the local high density typologies in terms of their response to the wind. Changes to a typology can be explored too to see if the performance will be different. For a typology which is considered a total failure in terms of response to wind, it may improve its performance if the orientation is altered. The CFD software can also parametrically respond to the changes of the typologies‚Äô dimensions. This is helpful to see how much more a typology can still be performing well before failure by increasing the floor area index. The easiest way to do this is to pump up the building height. In conclusion, designing in response to wind is extremely important as it is more sustainable and responsive to Urban Heat Island effect. A design which responds well to the wind patterns will help save cost of cooling load and fan expenditure. The people will also be more willing to use the outdoor spaces which will as a whole generate more vibrant city spaces. As a result, a high density city with huge population count can still enjoy good thermal comfort if the general urban planning and design respond well to wind.
keywords	computational fluid dynamics, sustainability, high density, urban design, airflow, ventilation
series	CAAD Futures
email
last changed	2012/02/11 19:21

_id	caadria2011_071
id	caadria2011_071
authors	Huang, Weixin; Weiguo Xu and Tao Wang
year	2011
title	Structural form generation using interactive genetic algorithm
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. 751-760
doi	https://doi.org/10.52842/conf.caadria.2011.751
summary	Structural form design could be considered as a bi-objective problem which should satisfy both the efficiency criterion of structural engineering and the aesthetic criteria of architects. This research tries to introduce Interactive Genetic Algorithm (IGA) in the problem of structural form design. It combines the structural analysis performed by computer and aesthetic evaluation by architects into a bi-objective IGA process, in order to generate structural forms which are preferred by the architects and at the same time structurally optimal. In this research, the structure generated consists of two kinds of members, truss and beam. Generation and evolution of structure is based on a triangular element composed of several members. Through experiment of the IGA structural form design system, it is found the structure forms are optimized as the evolutionary process proceeds, and the aesthetic preference of architect is also transferred from generation to generation. It is also revealed that the two criteria have mutual restrictions, which resulted in compromised results.
keywords	Bi-objective optimization; structural form; interactive genetic algorithm; subjective evaluation
series	CAADRIA
email
last changed	2022/06/07 07:49

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