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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	ecaade2023_000
id	ecaade2023_000
authors	Dokonal, Wolfgang, Hirschberg, Urs and Wurzer, Gabriel
year	2023
title	eCAADe 2023 Digital Design Reconsidered - Volume 1
source	Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 1, Graz, 20-22 September 2023, 905 p.
doi	https://doi.org/10.52842/conf.ecaade.2023.1.001
summary	The conference logo is a bird’s eye view of spiral stairs that join and separate – an homage to the famous double spiral staircase in Graz, a tourist attraction of this city and a must-see for any architecturally minded visitor. Carved out of limestone, the medieval construction of the original is a daring feat of masonry as well as a symbolic gesture. The design speaks of separation and reconciliation: The paths of two people that climb the double spiral stairs separate and then meet again at each platform. The relationship between architectural design and the growing digital repertoire of tools and possibilities seems to undergo similar cycles of attraction and rejection: enthusiasm about digital innovations – whether in Virtual Reality, Augmented Reality, Energy Design, Robotic Fabrication, the many Dimensions of BIM or, as right now, in AI and Machine Learning – is typically followed by a certain disillusionment and a realization that the promises were somewhat overblown. But a turn away from these digital innovations can only be temporary. In our call for papers we refer to the first and second ‘digital turns’, a term Mario Carpo coined. Yes, it’s a bit of a pun, but you could indeed see these digital turns in our logo as well. Carpo would probably agree that design and the digital have become inseparably intertwined. While they may be circling in different directions, an innovative rejoinder is always just around the corner. The theme of the conference asked participants to re-consider the relationship between Design and the Digital. The notion of a cycle is already present in the syllable “re”. Indeed, 20 years earlier, in 2003, we held an ECAADE conference in Graz simply under the title “Digital Design” and our re-using – or is it re-cycling? – the theme can be seen as the completion of one of those cycles described above: One level up, we meet again, we’ve come full circle. The question of the relationship between Design and the Digital is still in flux, still worthy of renewed consideration. There is a historical notion implicit in the theme. To reconsider something, one needs to take a step back, to look into the past as well as into the future. Indeed, at this conference we wanted to take a longer view, something not done often enough in the fast-paced world of digital technology. Carefully considering one’s past can be a source of inspiration. In fact, the double spiral stair that inspired our conference logo also inspired many architects through the ages. Konrad Wachsmann, for example, is said to have come up with his famous Grapevine assembly system based on this double spiral stair and its intricate joinery. More recently, Rem Koolhaas deemed the double spiral staircase in Graz important enough to include a detailed model of it in his “elements of architecture” exhibition at the Venice Biennale in 2014. Our interpretation of the stair is a typically digital one, you might say. First of all: it’s a rendering of a virtual model; it only exists inside a computer. Secondly, this virtual model isn’t true to the original. Instead, it does what the digital has made so easy to do: it exaggerates. Where the original has just two spiral stairs that separate and join, our model consists of countless stairs that are joined in this way. We see only a part of the model, but the stairs appear to continue in all directions. The implication is of an endless field of spiral stairs. As the 3D model was generated with a parametric script, it would be very easy to change all parameters of it – including the number of stairs that make it up. Everyone at this conference is familiar with the concept of parametric design: it makes generating models of seemingly endless amounts of connected spiral stairs really easy. Although, of course, if we’re too literal about the term ‘endless’, generating our stair model will eventually crash even the most advanced computers. We know that, too. – That's another truth about the Digital: it makes a promise of infinity, which, in the end, it can’t keep. And even if it could: what’s the point of just adding more of the same: more variations, more options, more possible ways to get lost? Doesn’t the original double spiral staircase contain all those derivatives already? Don’t we know that ‘more’ isn’t necessarily better? In the original double spiral stair the happy end is guaranteed: the lovers’ paths meet at the top as well as when they exit the building. Therefore, the stair is also colloquially known as the Busserlstiege (the kissing stair) or the Versöhnungsstiege (reconciliation stair). In our digitally enhanced version, this outcome is no longer clear: we can choose between multiple directions at each level and we risk losing sight of the one we were with. This is also emblematic of our field of research. eCAADe was founded to promote “good practice and sharing information in relation to the use of computers in research and education in architecture and related professions” (see ecaade.org). That may have seemed a straightforward proposition forty years ago, when the association was founded. A look at the breadth and depth of research topics presented and discussed at this conference (and as a consequence in this book, for which you’re reading the editorial) shows how the field has developed over these forty years. There are sessions on Digital Design Education, on Digital Fabrication, on Virtual Reality, on Virtual Heritage, on Generative Design and Machine Learning, on Digital Cities, on Simulation and Digital Twins, on BIM, on Sustainability, on Circular Design, on Design Theory and on Digital Design Experimentations. We hope you will find what you’re looking for in this book and at the conference – and maybe even more than that: surprising turns and happy encounters between Design and the Digital.
series	eCAADe
email
last changed	2023/12/10 10:49

_id	ecaade2023_001
id	ecaade2023_001
authors	Dokonal, Wolfgang, Hirschberg, Urs and Wurzer, Gabriel
year	2023
title	eCAADe 2023 Digital Design Reconsidered - Volume 2
source	Dokonal, W, Hirschberg, U and Wurzer, G (eds.), Digital Design Reconsidered - Proceedings of the 41st Conference on Education and Research in Computer Aided Architectural Design in Europe (eCAADe 2023) - Volume 2, Graz, 20-22 September 2023, 899 p.
doi	https://doi.org/10.52842/conf.ecaade.2023.2.001
summary	The conference logo is a bird’s eye view of spiral stairs that join and separate – an homage to the famous double spiral staircase in Graz, a tourist attraction of this city and a must-see for any architecturally minded visitor. Carved out of limestone, the medieval construction of the original is a daring feat of masonry as well as a symbolic gesture. The design speaks of separation and reconciliation: The paths of two people that climb the double spiral stairs separate and then meet again at each platform. The relationship between architectural design and the growing digital repertoire of tools and possibilities seems to undergo similar cycles of attraction and rejection: enthusiasm about digital innovations – whether in Virtual Reality, Augmented Reality, Energy Design, Robotic Fabrication, the many Dimensions of BIM or, as right now, in AI and Machine Learning – is typically followed by a certain disillusionment and a realization that the promises were somewhat overblown. But a turn away from these digital innovations can only be temporary. In our call for papers we refer to the first and second ‘digital turns’, a term Mario Carpo coined. Yes, it’s a bit of a pun, but you could indeed see these digital turns in our logo as well. Carpo would probably agree that design and the digital have become inseparably intertwined. While they may be circling in different directions, an innovative rejoinder is always just around the corner. The theme of the conference asked participants to re-consider the relationship between Design and the Digital. The notion of a cycle is already present in the syllable “re”. Indeed, 20 years earlier, in 2003, we held an ECAADE conference in Graz simply under the title “Digital Design” and our re-using – or is it re-cycling? – the theme can be seen as the completion of one of those cycles described above: One level up, we meet again, we’ve come full circle. The question of the relationship between Design and the Digital is still in flux, still worthy of renewed consideration. There is a historical notion implicit in the theme. To reconsider something, one needs to take a step back, to look into the past as well as into the future. Indeed, at this conference we wanted to take a longer view, something not done often enough in the fast-paced world of digital technology. Carefully considering one’s past can be a source of inspiration. In fact, the double spiral stair that inspired our conference logo also inspired many architects through the ages. Konrad Wachsmann, for example, is said to have come up with his famous Grapevine assembly system based on this double spiral stair and its intricate joinery. More recently, Rem Koolhaas deemed the double spiral staircase in Graz important enough to include a detailed model of it in his “elements of architecture” exhibition at the Venice Biennale in 2014. Our interpretation of the stair is a typically digital one, you might say. First of all: it’s a rendering of a virtual model; it only exists inside a computer. Secondly, this virtual model isn’t true to the original. Instead, it does what the digital has made so easy to do: it exaggerates. Where the original has just two spiral stairs that separate and join, our model consists of countless stairs that are joined in this way. We see only a part of the model, but the stairs appear to continue in all directions. The implication is of an endless field of spiral stairs. As the 3D model was generated with a parametric script, it would be very easy to change all parameters of it – including the number of stairs that make it up. Everyone at this conference is familiar with the concept of parametric design: it makes generating models of seemingly endless amounts of connected spiral stairs really easy. Although, of course, if we’re too literal about the term ‘endless’, generating our stair model will eventually crash even the most advanced computers. We know that, too. – That's another truth about the Digital: it makes a promise of infinity, which, in the end, it can’t keep. And even if it could: what’s the point of just adding more of the same: more variations, more options, more possible ways to get lost? Doesn’t the original double spiral staircase contain all those derivatives already? Don’t we know that ‘more’ isn’t necessarily better? In the original double spiral stair the happy end is guaranteed: the lovers’ paths meet at the top as well as when they exit the building. Therefore, the stair is also colloquially known as the Busserlstiege (the kissing stair) or the Versöhnungsstiege (reconciliation stair). In our digitally enhanced version, this outcome is no longer clear: we can choose between multiple directions at each level and we risk losing sight of the one we were with. This is also emblematic of our field of research. eCAADe was founded to promote “good practice and sharing information in relation to the use of computers in research and education in architecture and related professions” (see ecaade.org). That may have seemed a straightforward proposition forty years ago, when the association was founded. A look at the breadth and depth of research topics presented and discussed at this conference (and as a consequence in this book, for which you’re reading the editorial) shows how the field has developed over these forty years. There are sessions on Digital Design Education, on Digital Fabrication, on Virtual Reality, on Virtual Heritage, on Generative Design and Machine Learning, on Digital Cities, on Simulation and Digital Twins, on BIM, on Sustainability, on Circular Design, on Design Theory and on Digital Design Experimentations. We hope you will find what you’re looking for in this book and at the conference – and maybe even more than that: surprising turns and happy encounters between Design and the Digital.
series	eCAADe
type	normal paper
email
last changed	2024/08/29 08:36

_id	ascaad2014_028
id	ascaad2014_028
authors	Hamza, Neveen
year	2014
title	Crafting the Virtual Sensory Environment: building performance simulation visualization as an enabler for creating sensory environments
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 353-359
summary	The sensory virtual environment is defined as a cognitive method leading to a mental model of potential value in gaining insights of how building spaces may perform to enhance the sensory experience of occupants. For architects, creating a sensory and experiential space is the holy grail of design endeavours. So far, the results of the experiential and sensory success of buildings are dependent on the architects’ own experience and judgment of materials and compositions within the space. Currently the use of tools such as 3D Max provides an ocular experience of the crafted virtual space, rarely giving indications of daylight and possible sensory experiences of the indoor thermal and acoustic conditions. In practice testing the thermal, daylight and other environmental performances of buildings at design stage is within the remit of building services consultants for conformity regulatory checks, and is dominated by extensive 2D (graphs) information exchanges. There is a need to include other formats of visual information exchanges to facilitate decisions on sustainable buildings and to achieve performing sensory environments This paper presents an exploration of endeavours to test the virtual sensory space through visualizations of building performance and aims to provide recommendations on how to fuse endeavours to disseminate knowledge within the design team while creating an information exchange mechanism that captures experts’ explicit and tacit knowledge. Case studies will be presented on how building performance simulation tools are used to provide matrices of relations to indicate the building performance, thermal comfort, daylight and natural ventilation and were used as an aid for architectural design decisions to create sensory environments.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	ecaade2014_109
id	ecaade2014_109
authors	Kristoffer Negendahl, Thomas Perkov and Alfred Heller
year	2014
title	Approaching Sentient Building Performance Simulation Systems
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 49-60
doi	https://doi.org/10.52842/conf.ecaade.2014.2.049
wos	WOS:000361385100004
summary	Building designers make decisions in early design stages that have large impact on building performance, including those of energy-, daylight- and indoor environment performance. Building performance simulation (BPS) tools can support the designer, in making better decisions, by providing the performance consequences of design choices. However BPS tools often require deep technical knowledge and is too time consuming to use to effectively support the design exploration in the early design stages. To solve this challenge, the current paper proposes: Sentient building performance simulation systems, which combine one or more high precision BPS tools to provide near instantaneous performance feedback directly in the design tool. Sentient BPS systems are essentially combining: 1) design tools, 2) parametric tools, 3) BPS tools, 4) dynamic databases 5) interpolation techniques and 6) prediction techniques as a fast and valid simulation system for the early design stage.
keywords	Building performance simulation; parametric modelling; visual programming language; database; responsive system; integrated dynamic model
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2014_192
id	ecaade2014_192
authors	David Stasiuk and Mette Ramsgaard Thomsen
year	2014
title	Learning to be a Vault - Implementing learning strategies for design exploration in inter-scalar systems
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 381-390
doi	https://doi.org/10.52842/conf.ecaade.2014.1.381
wos	WOS:000361384700038
summary	Parametric design models enable the production of dynamic form, responsive material assemblies, and numerically and geometrically analytical feedback. The value potential for design produced through the procedural transformation of input parameters (or features) through algorithmic models has been repeatedly demonstrated and epistemically refined. However, despite their capacity to improve productivity and iteration, parametric models are nonetheless prone to inflexibility and reduction, both of which obscure processes of invention and discovery that are central to an effective design practice. This paper presents an experimental approach for the application of multiple, parallel computational design modelling strategies which are tested in the production of an inter-scalar model array that synthesises design intent, the simulation of material behaviours, performance-driven adaptation, and open-ended processes of discovery and categorical description. It is particularly focused on the computational potentials embedded in interdependent applications of simulation and machine learning algorithms as generative and descriptive drivers of form, performance, and architectural quality. It ultimately speculates towards an architectural design modelling method that privileges open model topologies and emergent feature production as critical operators in the generation of flexible and adaptive design solutions.
keywords	Parametric design; computational modelling; machine learning; multi-objective optimisation; k-means clustering
series	eCAADe
email
last changed	2022/06/07 07:55

_id	ecaade2014_186
id	ecaade2014_186
authors	Maria Kerkidou, Anastasia Pechlivanidou-Liakata, Adam Doulgerakis and Alexandros Sagias
year	2014
title	Agents' movement_towards the reformation of public space - Step 1: select \| implement \| observe crowd rules
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 53-62
doi	https://doi.org/10.52842/conf.ecaade.2014.1.053
wos	WOS:000361384700004
summary	In order to enable designers to envision the behaviour of pedestrians with reference to specific environments, computational models of crowds and their movement become indispensable tools of evaluation as well as tools of creativity. In this paper, the model under development constitutes a generic model which incorporates ideas about agent-based systems. The simulation program comprises a support system for the designer to place virtual users in a context that bears analogous environmental traits of the area under study. The design problem which is addressed by the implementation deals with public squares for which the programmatic demands involve a broad spectrum of users of diverse idiosyncrasies. Our study attempts to elucidate how the variation in preferences of pedestrian movement which depend on various personal, situational and environmental factors, may influence the current use of a selected public space and underpin qualitative alterations compared to its initial design. The intent of the methodology is not to create a predictive tool of naturalistic human movement but to explore how spatial configuration can be assessed and developed through a simulation model of pedestrian behaviour.
keywords	Crowd simulation; spatial behaviour; pedestrian movement; public space
series	eCAADe
email
last changed	2022/06/07 07:59

_id	ecaade2014_145
id	ecaade2014_145
authors	Peter Búš, Lukáš Kurilla and Henri Achten
year	2014
title	Emergent articulation field in existing urban context - Computational typologies with emergent matter
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 181-189
doi	https://doi.org/10.52842/conf.ecaade.2014.1.181
wos	WOS:000361384700018
summary	The main purpose of this research is to introduce and verify selected advanced computational methodologies operating with agent-oriented approach that are applicable within the framework of emergent urban design strategies in early stages of zoning proceedings. The aim is to demonstrate that speculative matter of the phenomenon of emergence in terms of design thought driven by computational models can also be applicable within real existing urban conditions. The research concurs previous researches in the field of urban pre-reconfigurations in the selected city environments. It concentrates on developing a simulation model as an analytical and generative instrumental platform for architects in early phases of urban design and synthetizes accumulated computational advancements based on agent-oriented approach.
keywords	Emergence; agent-oriented modelling; urban agency; colonial growth; bottom-up strategy
series	eCAADe
email
last changed	2022/06/07 08:00

_id	ascaad2022_099
id	ascaad2022_099
authors	Sencan, Inanc
year	2022
title	Progeny: A Grasshopper Plug-in that Augments Cellular Automata Algorithms for 3D Form Explorations
source	Hybrid Spaces of the Metaverse - Architecture in the Age of the Metaverse: Opportunities and Potentials [10th ASCAAD Conference Proceedings] Debbieh (Lebanon) [Virtual Conference] 12-13 October 2022, pp. 377-391
summary	Cellular automata (CA) is a well-known computation method introduced by John von Neumann and Stanislaw Ulam in the 1940s. Since then, it has been studied in various fields such as computer science, biology, physics, chemistry, and art. The Classic CA algorithm is a calculation of a grid of cells' binary states based on neighboring cells and a set of rules. With the variation of these parameters, the CA algorithm has evolved into alternative versions such as 3D CA, Multiple neighborhood CA, Multiple rules CA, and Stochastic CA (Url-1). As a rule-based generative algorithm, CA has been used as a bottom-up design approach in the architectural design process in the search for form (Frazer,1995; Dinçer et al., 2014), in simulating the displacement of individuals in space, and in revealing complex relations at the urban scale (Güzelci, 2013). There are implementations of CA tools in 3D design software for designers as additional scripts or plug-ins. However, these often have limited ability to create customized CA algorithms by the designer. This study aims to create a customizable framework for 3D CA algorithms to be used in 3D form explorations by designers. Grasshopper3D, which is a visual scripting environment in Rhinoceros 3D, is used to implement the framework. The main difference between this work and the current Grasshopper3D plug-ins for CA simulation is the customizability and the real-time control of the framework. The parameters that allow the CA algorithm to be customized are; the initial state of the 3D grid, neighborhood conditions, cell states and rules. CA algorithms are created for each customizable parameter using the framework. Those algorithms are evaluated based on the ability to generate form. A voxel-based approach is used to generate geometry from the points created by the 3D cellular automata. In future, forms generated using this framework can be used as a form generating tool for digital environments.
series	ASCAAD
email
last changed	2024/02/16 13:38

_id	ecaade2014_122
id	ecaade2014_122
authors	Sophia Vyzoviti and Nicolas Remy
year	2014
title	Acoustically Efficient Origami Based Partitions for Open Plan Spaces - Developing a Design Tool
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 487-494
doi	https://doi.org/10.52842/conf.ecaade.2014.1.487
wos	WOS:000361384700048
summary	The paper investigates the management of acoustic and privacy problems in open-plan spaces through the implementation of lightweight architectural partitions developed by origami tessellations. Integrating knowledge from parametric modelling, acoustics and design for user needs, a design tool for acoustically efficient, flexible, interior partition systems is developed. The paper elaborates on three components of the design tool: form generation, acoustic performance and spatial performance. The form generation component employs parametric models of origami tessellations to generate the partition system. The acoustic performance component employs acoustic simulation and prediction to regulate the containing volume as well as the system's surface materials. The spatial performance component evaluates form and material through qualitative criteria for privacy and flexibility according to user needs.
keywords	Parametric origami; acoustic design; interior partition systems, design tool development
series	eCAADe
email
last changed	2022/06/07 07:56

_id	caadria2014_052
id	caadria2014_052
authors	Tai, Nan-Ching
year	2014
title	Binocular Disparity and Depth Cue of Luminance Contrast
source	Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 637–646
doi	https://doi.org/10.52842/conf.caadria.2014.637
summary	Luminance contrast has been identified as an effective depth cue through perceptual studies using digital images generated by the integrated technologies of physically based lighting simulation and perceptually based tone mapping. However, the prior established framework utilizes a single camera viewpoint, failing to address the binocular vision of the human visual system. In this study, the computational framework is extended to incorporate 3-dimensional (3D) stereo display technology. Psychophysical experiments were conducted to investigate the depth effect of luminance contrast on the experimental scenes presented on conventional and stereo displays. The objective of this study was twofold: first, to investigate the effect of luminance contrast on depth perception, considering binocular vision; second, to further advance the visual realism of the computer-generated environment to reflect the perceptual reality of static pictorial and binocular disparity cues.
keywords	High dynamic range imagery; luminance contrast; binocular disparity; stereo display; depth perception
series	CAADRIA
email
last changed	2022/06/07 07:56

_id	ijac201412204
id	ijac201412204
authors	Wilkinson, Samuel; Sean Hanna
year	2014
title	Approximating Computational Fluid Dynamics for Generative Tall Building Design
source	International Journal of Architectural Computing vol. 12 - no. 2, 155-178
summary	Background literature review, methodology, results, and analysis are presented for a novel approach to approximating wind pressure on tall buildings for the application of generative design exploration and optimisation.The predictions are approximations of time-averaged computational fluid dynamics (CFD) data with the aim of maintaining simulation accuracy but with improved speed.This is achieved through the use of a back-propagation artificial neural network (ANN) with vertex-based shape features as input and pressure as output.The training set consists of 600 procedurally generated tall building models, and the test set of 10 real building models; for all models in both sets, a feature vector is calculated for every vertex. Over the test set, mean absolute errors against the basis CFD are 1.99–4.44% (_:2.10–5.09%) with an on-line process time of 14.72–809.98s (0.028s/sample). Studies are also included on feature sensitivity, training set size, and comparison of CFD against prediction times. Results indicate that prediction time is only dependent on the number of test model vertices, and is therefore invariant to basis CFD time.
series	journal
last changed	2019/05/24 09:55

_id	ecaade2014_188
id	ecaade2014_188
authors	Anette Kreutzberg
year	2014
title	New Virtual Reality for Architectural Investigations
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 253-260
doi	https://doi.org/10.52842/conf.ecaade.2014.2.253
wos	WOS:000361385100027
summary	Visually decoding and evaluating digital 3D models in proper scale on screen from within 3D modelling software can be quite difficult due to random zoom-factors, Field of View (FOV) and eye height. Motion and interactive bodily grounded examinations are helpful factors that can be enhanced with the use of Virtual Reality (VR). The purpose of this phenomenological study is to address these difficulties of perception of scale by introducing a Virtual Reality Head Mounted Display (HMD) as an exploration tool and outlining possible ways of utilising this tool in architectural teaching. To achieve the purpose findings of perception of scale and distance; level of abstraction; navigation; and simulator sickness will be discussed in relation to architectural investigation in VR. This will be based on the experiences and findings during two workshops with architecture students qualifying their conceptual designs with the VR HMD.
keywords	Virtual reality; level of abstraction; oculus rift hmd; perception of scale; simulator sickness
series	eCAADe
email
last changed	2022/06/07 07:54

_id	cdrf2023_526
id	cdrf2023_526
authors	Eric Peterson, Bhavleen Kaur
year	2023
title	Printing Compound-Curved Sandwich Structures with Robotic Multi-Bias Additive Manufacturing
source	Proceedings of the 2023 DigitalFUTURES The 5st International Conference on Computational Design and Robotic Fabrication (CDRF 2023)
doi	https://doi.org/https://doi.org/10.1007/978-981-99-8405-3_44
summary	A research team at Florida International University Robotics and Digital Fabrication Lab has developed a novel method for 3d-printing curved open grid core sandwich structures using a thermoplastic extruder mounted on a robotic arm. This print-on-print additive manufacturing (AM) method relies on the 3d modeling software Rhinoceros and its parametric software plugin Grasshopper with Kuka-Parametric Robotic Control (Kuka-PRC) to convert NURBS surfaces into multi-bias additive manufacturing (MBAM) toolpaths. While several high-profile projects including the University of Stuttgart ICD/ITKE Research Pavilions 2014–15 and 2016–17, ETH-Digital Building Technologies project Levis Ergon Chair 2018, and 3D printed chair using Robotic Hybrid Manufacturing at Institute of Advanced Architecture of Catalonia (IAAC) 2019, have previously demonstrated the feasibility of 3d printing with either MBAM or sandwich structures, this method for printing Compound-Curved Sandwich Structures with Robotic MBAM combines these methods offering the possibility to significantly reduce the weight of spanning or cantilevered surfaces by incorporating the structural logic of open grid-core sandwiches with MBAM toolpath printing. Often built with fiber reinforced plastics (FRP), sandwich structures are a common solution for thin wall construction of compound curved surfaces that require a high strength-to-weight ratio with applications including aerospace, wind energy, marine, automotive, transportation infrastructure, architecture, furniture, and sports equipment manufacturing. Typical practices for producing sandwich structures are labor intensive, involving a multi-stage process including (1) the design and fabrication of a mould, (2) the application of a surface substrate such as FRP, (3) the manual application of a light-weight grid-core material, and (4) application of a second surface substrate to complete the sandwich. There are several shortcomings to this moulded manufacturing method that affect both the formal outcome and the manufacturing process: moulds are often costly and labor intensive to build, formal geometric freedom is limited by the minimum draft angles required for successful removal from the mould, and customization and refinement of product lines can be limited by the need for moulds. While the most common material for this construction method is FRP, our proof-of-concept experiments relied on low-cost thermoplastic using a specially configured pellet extruder. While the method proved feasible for small representative examples there remain significant challenges to the successful deployment of this manufacturing method at larger scales that can only be addressed with additional research. The digital workflow includes the following steps: (1) Create a 3D digital model of the base surface in Rhino, (2) Generate toolpaths for laminar printing in Grasshopper by converting surfaces into lists of oriented points, (3) Generate the structural grid-core using the same process, (4) Orient the robot to align in the direction of the substructure geometric planes, (5) Print the grid core using MBAM toolpaths, (6) Repeat step 1 and 2 for printing the outer surface with appropriate adjustments to the extruder orientation. During the design and printing process, we encountered several challenges including selecting geometry suitable for testing, extruder orientation, calibration of the hot end and extrusion/movement speeds, and deviation between the computer model and the physical object on the build platen. Physical models varied from their digital counterparts by several millimeters due to material deformation in the extrusion and cooling process. Real-time deviation verification studies will likely improve the workflow in future studies.
series	cdrf
email
last changed	2024/05/29 14:04

_id	ecaade2014_184
id	ecaade2014_184
authors	José Nuno Beirão, Letícia Mendes and Gabriela Celani
year	2014
title	CItyMaker Workshop - An Urban Design Studio to experience the dynamic interaction between design exploration and data flow on density-based indicators
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 33-41
doi	https://doi.org/10.52842/conf.ecaade.2014.1.033
wos	WOS:000361384700002
summary	This paper shows the results of a workshop on parametric urban design. A pattern based parametric urban design platform provides a common platform for urban design and analysis by linking GIS with a parametric CAD environment. Urban plans are developed by combining design patterns taken from a large set of parametric urban design patterns acknowledged as a generic urban design language. Urban plan instances are obtained through a specific composition of patterns and a specific assignment of parameters to the patterns. The models provide simultaneous analysis by confronting formal solutions with density indicators that are automatically provided by a set of density calculation patterns.
keywords	Parametric urban design; citymaker, urban design workshop; design methodology
series	eCAADe
email
last changed	2022/06/07 07:52

_id	ecaade2014_141
id	ecaade2014_141
authors	Martin Tamke, Morten Myrup Jensen, Jakob Beetz, Thomas Krijnen and Dag Fjeld Edvardsen
year	2014
title	Building Information Deduced - State and potentials for Information query in Building Information Modelling
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 375-384
doi	https://doi.org/10.52842/conf.ecaade.2014.2.375
wos	WOS:000361385100039
summary	In recent years, Building Information Models have become commonplace in building profession. The extensive use and increasing experience with BIM models offers new perspectives and potentials for design and planning. A recent stakeholder study conducted by the authors of this paper show that in practice models are no longer solely observed as culmination of knowledge in a 3d representation of future built structures, but as a source of information in itself. Experienced users of BIM want to Find Information within a model or across a set of these and Compare models in order to evaluate states of a model, differences in separate models or models from different point of time. Current BIM tools support both modes only in a rudimentary form. This paper discusses current modes of information query within and across BIM models, shows beneficial scenarios for building and planning practice through customised queries and exemplifies these on the base of a scripted tool. This customized approach is used to test approaches for a machine-based assessment of Level of detail and BIM-readiness in BIM models.
keywords	Building information modelling; bim; ifc; openbim; information query; data extraction
series	eCAADe
email
last changed	2022/06/07 07:59

_id	caadria2014_090
id	caadria2014_090
authors	Schubert, Gerhard; Marcus Tönnis, Violin Yanev, Gudrun Klinker and Frank Petzold
year	2014
title	Dynamic 3D-Sketching
source	Rethinking Comprehensive Design: Speculative Counterculture, Proceedings of the 19th International Conference on Computer-Aided Architectural Design Research in Asia (CAADRIA 2014) / Kyoto 14-16 May 2014, pp. 107–116
doi	https://doi.org/10.52842/conf.caadria.2014.107
summary	Sketching by hand is without doubt – alongside building models – the most common tool that architects employ when designing. A disadvantage of the sketch is, even if it is a perspective drawing, that it is a purely two-dimensional planar representation of a three-dimensional product: the three-dimensional impression that the sketch communicates is a product of the viewer’s imagination. Digital modelling tools on the other hand support the creation of three-dimensional content but fall short in their ease of handling: their complexity and potentially unintuitive operation hinder rather than support the design process. Taking this discrepancy as a starting point, the presented system details the development and prototypical implementation of a dynamic 3D-sketching tool. The underlying core idea is to create a seamless connection between a perspective hand-sketch and the corresponding digital 3D-model in order to benefit from the advantages of hand sketching as a design tool and computer maintained 3D models. The system allows the designer to work as usual, visualizing his or her thoughts using perspective sketches. The user sketches on a touchscreen surface. The 2D drawing is automatically interpreted and converted into a system of 3D lines, surfaces and volumes in real-time.
keywords	Design Tool; Early Design Stages; 3D Sketching; Urban Design; HCI
series	CAADRIA
email
last changed	2022/06/07 07:57

_id	ascaad2014_023
id	ascaad2014_023
authors	Al-Maiyah, Sura and Hisham Elkadi
year	2014
title	Assessing the Use of Advanced Daylight Simulation Modelling Tools in Enhancing the Student Learning Experience
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 303-313
summary	In architecture schools, where the ‘studio culture’ lies at the heart of students’ learning, taught courses, particularly technology ones, are often seen as secondary or supplementary units. Successful delivery of such courses, where students can act effectively, be motivated and engaged, is a rather demanding task requiring careful planning and the use of various teaching styles. A recent challenge that faces architecture education today, and subsequently influences the way technology courses are being designed, is the growing trend in practice towards environmentally responsive design and the need for graduates with new skills in sustainable construction and urban ecology (HEFCE’s consultation document, 2005). This article presents the role of innovative simulation modelling tools in the enhancement of the student learning experience and professional development. Reference is made to a teaching practice that has recently been applied at Portsmouth School of Architecture in the United Kingdom and piloted at Deakin University in Australia. The work focuses on the structure and delivery of one of the two main technology units in the second year architecture programme that underwent two main phases of revision during the academic years 2009/10 and 2010/11. The article examines the inclusion of advanced daylight simulation modelling tools in the unit programme, and measures the effectiveness of enhancing its delivery as a key component of the curriculum on the student learning experience. A main objective of the work was to explain whether or not the introduction of a simulation modelling component, and the later improvement of its integration with the course programme and assessment, has contributed to a better learning experience and level of engagement. Student feedback and the grade distribution pattern over the last three academic years were collected and analyzed. The analysis of student feedback on the revised modelling component showed a positive influence on the learning experience and level of satisfaction and engagement. An improvement in student performance was also recorded over the last two academic years and following the implementation of new assessment design.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	ecaade2014_023
id	ecaade2014_023
authors	Salma El Ahmar and Antonio Fioravanti
year	2014
title	Botanics and Parametric Design Fusions for Performative Building Skins - An application in hot climates
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 2, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 595-604
doi	https://doi.org/10.52842/conf.ecaade.2014.2.595
wos	WOS:000361385100062
summary	Biomimicry and computational design are two growing fields of research and practice in architecture for their potential in performative and sustainable design, among many other benefits. Cooling loads are posing serious energy problems in hot climatic cities as in Cairo and Alexandria. Attempting to solve these problems, this research turned to botanical inspirations for ideas in order to improve thermoregulation of the building skin. One of these ideas was chosen and implemented using computational software in the design of a parametric vertical shading screen for a typical office room in Cairo. The challenge was to minimize cooling loads as much as possible without compromising daylight requirements. An evolutionary solver was used to optimize results and environmental simulations were performed before and after the proposed screen to assess its performance and evaluate this biomimetic-computational approach to design.
keywords	Biomimicry; building skin; thermoregulation; parametric design; hot climates
series	eCAADe
email
last changed	2022/06/07 08:00

_id	ascaad2014_021
id	ascaad2014_021
authors	Sushant, Verma and Pradeep Devadass
year	2014
title	Adaptive [skins]: Adaptation through smart systems
source	Digital Crafting [7th International Conference Proceedings of the Arab Society for Computer Aided Architectural Design (ASCAAD 2014 / ISBN 978-603-90142-5-6], Jeddah (Kingdom of Saudi Arabia), 31 March - 3 April 2014, pp. 275-289
summary	The project investigates responsive building skin systems that adapt to the dynamic environmental conditions to regulate internal conditions in a habitable space over different periods of time by exhibiting a state of motion and dynamism. Passive and active building skins are developed using shape memory alloys and pneumatic actuators through investigations of smart systems that integrate smart materials and smart geometries. Nitinol springs are integrated in tensegrity systems to actuate the adaptive behaviour, which forms the passive roof system. Owing to the complexity of the multi-parametric system, genetic algorithms are developed for system optimization and calibrated with physical prototypes at varied scales. The developed systems are tested against two distinct climatic models- New Delhi and Barcelona, and evaluated for performance, based on heat and light, which are quantified as solar gain and illuminance as principles, and daylight factor for evaluation purpose. New tool-sets are developed in the process by combining various digital tools, to create a real-time feedback and memory loop system.
series	ASCAAD
email
last changed	2016/02/15 13:09

_id	ecaade2014_086
id	ecaade2014_086
authors	Ahmed Sarhan and Peter Rutherford
year	2014
title	Integrating Sustainability in the Architectural Design Education Process - Taxonomy of Challenges and Guidelines
source	Thompson, Emine Mine (ed.), Fusion - Proceedings of the 32nd eCAADe Conference - Volume 1, Department of Architecture and Built Environment, Faculty of Engineering and Environment, Newcastle upon Tyne, England, UK, 10-12 September 2014, pp. 323-332
doi	https://doi.org/10.52842/conf.ecaade.2014.1.323
wos	WOS:000361384700032
summary	The last decade have seen substantial calls and increasing pressure for developing an integrated design teaching framework, where sustainability is an imperative priority. This paper focuses on presenting a taxonomy of the main challenges encountered within the educational domain, in the attempt to reach an effective integration. The paper also presents a set guidelines to address and try to resolve the noted challenges. As the use of Building Performance Simulation (BPS) applications is a central approach in this process aiming to reach energy efficient buildings, the paper focuses on the shortcomings noted as a result of the use of these applications in the design studios, with particular emphasis on the thermal and lighting aspects of the simulation. The taxonomy presented is a summary of the findings from literature review, as well as the surveys results which were part of the author's research project discussed in the paper.
keywords	Environmental design; building performance simulation; architectural design education
series	eCAADe
email
last changed	2022/06/07 07:54

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