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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	7a20
id	7a20
authors	Carrara, G., Fioravanti, A.
year	2002
title	SHARED SPACE’ AND ‘PUBLIC SPACE’ DIALECTICS IN COLLABORATIVE ARCHITECTURAL DESIGN.
source	Proceedings of Collaborative Decision-Support Systems Focus Symposium, 30th July, 2002; under the auspices of InterSymp-2002, 14° International Conference on Systems Research, Informatics and Cybernetics, 2002, Baden-Baden, pg. 27-44.
summary	The present paper describes on-going research on Collaborative Design. The proposed model, the resulting system and its implementation refer mainly to architectural and building design in the modes and forms in which it is carried on in advanced design firms. The model may actually be used effectively also in other environments. The research simultaneously pursues an integrated model of the: a) structure of the networked architectural design process (operators, activities, phases and resources); b) required knowledge (distributed and functional to the operators and the process phases). The article focuses on the first aspect of the model: the relationship that exists among the various ‘actors’ in the design process (according to the STEP-ISO definition, Wix, 1997) during the various stages of its development (McKinney and Fischer, 1998). In Collaborative Design support systems this aspect touches on a number of different problems: database structure, homogeneity of the knowledge bases, the creation of knowledge bases (Galle, 1995), the representation of the IT datum (Carrara et al., 1994; Pohl and Myers, 1994; Papamichael et al., 1996; Rosenmann and Gero, 1996; Eastman et al., 1997; Eastman, 1998; Kim, et al., 1997; Kavakli, 2001). Decision-making support and the relationship between ‘private’ design space (involving the decisions of the individual design team) and the ‘shared’ design space (involving the decisions of all the design teams, Zang and Norman, 1994) are the specific topic of the present article. Decisions taken in the ‘private design space’ of the design team or ‘actor’ are closely related to the type of support that can be provided by a Collaborative Design system: automatic checks performed by activating procedures and methods, reporting of 'local' conflicts, methods and knowledge for the resolution of ‘local’ conflicts, creation of new IT objects/ building components, who the objects must refer to (the ‘owner’), 'situated' aspects (Gero and Reffat, 2001) of the IT objects/building components. Decisions taken in the ‘shared design space’ involve aspects that are typical of networked design and that are partially present in the ‘private’ design space. Cross-checking, reporting of ‘global’ conflicts to all those concerned, even those who are unaware they are concerned, methods for their resolution, the modification of data structure and interface according to the actors interacting with it and the design phase, the definition of a 'dominus' for every IT object (i.e. the decision-maker, according to the design phase and the creation of the object). All this is made possible both by the model for representing the building (Carrara and Fioravanti, 2001), and by the type of IT representation of the individual building components, using the methods and techniques of Knowledge Engineering through a structured set of Knowledge Bases, Inference Engines and Databases. The aim is to develop suitable tools for supporting integrated Process/Product design activity by means of a effective and innovative representation of building entities (technical components, constraints, methods) in order to manage and resolve conflicts generated during the design activity.
keywords	Collaborative Design, Architectural Design, Distributed Knowledge Bases, ‘Situated’ Object, Process/Product Model, Private/Shared ‘Design Space’, Conflict Reduction.
series	other
type	symposium
email
last changed	2005/03/30 16:25

_id	6279
id	6279
authors	Carrara, G.; Fioravanti, A.
year	2002
title	Private Space' and ‘Shared Space’ Dialectics in Collaborative Architectural Design
source	InterSymp 2002 - 14th International Conference on Systems Research, Informatics and Cybernetics (July 29 - August 3, 2002), pp 28-44.
summary	The present paper describes on-going research on Collaborative Design. The proposed model, the resulting system and its implementation refer mainly to architectural and building design in the modes and forms in which it is carried on in advanced design firms. The model may actually be used effectively also in other environments. The research simultaneously pursues an integrated model of the: a) structure of the networked architectural design process (operators, activities, phases and resources); b) required knowledge (distributed and functional to the operators and the process phases). The article focuses on the first aspect of the model: the relationship that exists among the various ‘actors’ in the design process (according to the STEP-ISO definition, Wix, 1997) during the various stages of its development (McKinney and Fischer, 1998). In Collaborative Design support systems this aspect touches on a number of different problems: database structure, homogeneity of the knowledge bases, the creation of knowledge bases (Galle, 1995), the representation of the IT datum (Carrara et al., 1994; Pohl and Myers, 1994; Papamichael et al., 1996; Rosenmann and Gero, 1996; Eastman et al., 1997; Eastman, 1998; Kim, et al., 1997; Kavakli, 2001). Decision-making support and the relationship between ‘private’ design space (involving the decisions of the individual design team) and the ‘shared’ design space (involving the decisions of all the design teams, Zang and Norman, 1994) are the specific topic of the present article. Decisions taken in the ‘private design space’ of the design team or ‘actor’ are closely related to the type of support that can be provided by a Collaborative Design system: automatic checks performed by activating procedures and methods, reporting of 'local' conflicts, methods and knowledge for the resolution of ‘local’ conflicts, creation of new IT objects/ building components, who the objects must refer to (the ‘owner’), 'situated' aspects (Gero and Reffat, 2001) of the IT objects/building components. Decisions taken in the ‘shared design space’ involve aspects that are typical of networked design and that are partially present in the ‘private’ design space. Cross-checking, reporting of ‘global’ conflicts to all those concerned, even those who are unaware they are concerned, methods for their resolution, the modification of data structure and interface according to the actors interacting with it and the design phase, the definition of a 'dominus' for every IT object (i.e. the decision-maker, according to the design phase and the creation of the object). All this is made possible both by the model for representing the building (Carrara and Fioravanti, 2001), and by the type of IT representation of the individual building components, using the methods and techniques of Knowledge Engineering through a structured set of Knowledge Bases, Inference Engines and Databases. The aim is to develop suitable tools for supporting integrated Process/Product design activity by means of a effective and innovative representation of building entities (technical components, constraints, methods) in order to manage and resolve conflicts generated during the design activity.
keywords	Collaborative Design, Architectural Design, Distributed Knowledge Bases, ‘Situated’ Object, Process/Product Model, Private/Shared ‘Design Space’, Conflict Reduction.
series	other
type	symposium
email
last changed	2012/12/04 07:53

_id	0380
authors	Fenves, S., Flemming, U., Hendrickson, C., Maher, M., Quadrel, R., Terk, M. and Woodbury, R.
year	1994
title	Computer Integrated Building Design
source	Prentice-Hall, Inc., Englewood Cliffs, New jersey
summary	A guide to the principles and applications of computer integrated systems as applied to construction management. Computer-Integrated Building covers the fundamentals of construction project management, the design process for production and opportunities for CAD-integration.
series	other
last changed	2003/04/23 15:14

_id	f5fa
authors	Fenves, S., Flemming, U., Hendrickson, C., Maher, M.L., Quadrel, R., Terk, M. and Woodbury, R.
year	1994
title	Concurrent Computer-Aided Integrated Building Design
source	Prentice Hall, Inc. Englewood Cliffs, NJ
summary	This monograph assesses the means by which building design can be achieved in a more rapid and integrated fashion through the use of advanced computer aids.
series	other
last changed	2003/04/23 15:14

_id	68c8
authors	Flemming, U., Coyne, R. and Fenves, S. (et al.)
year	1994
title	SEED: A Software Environment to Support the Early Phases in Building Design
source	Proceeding of IKM '94, Weimar, Germany, pp. 5-10
summary	The SEED project intends to develop a software environment that supports the early phases in building design (Flemming et al., 1993). The goal is to provide support, in principle, for the preliminary design of buildings in all aspects that can gain from computer support. This includes using the computer not only for analysis and evaluation, but also more actively for the generation of designs, or more accurately, for the rapid generation of design representations. A major motivation for the development of SEED is to bring the results of two multi-generational research efforts focusing on `generative' design systems closer to practice: 1. LOOS/ABLOOS, a generative system for the synthesis of layouts of rectangles (Flemming et al., 1988; Flemming, 1989; Coyne and Flemming, 1990; Coyne, 1991); 2. GENESIS, a rule-based system that supports the generation of assemblies of 3-dimensional solids (Heisserman, 1991; Heisserman and Woodbury, 1993). The rapid generation of design representations can take advantage of special opportunities when it deals with a recurring building type, that is, a building type dealt with frequently by the users of the system. Design firms - from housing manufacturers to government agencies - accumulate considerable experience with recurring building types. But current CAD systems capture this experience and support its reuse only marginally. SEED intends to provide systematic support for the storing and retrieval of past solutions and their adaptation to similar problem situations. This motivation aligns aspects of SEED closely with current work in Artificial Intelligence that focuses on case-based design (see, for example, Kolodner, 1991; Domeshek and Kolodner, 1992; Hua et al., 1992).
series	other
email
last changed	2003/04/23 15:14

_id	de4c
authors	Flemming, U., Coyne, R. and Snyder, J.
year	1994
title	Case-based design in the SEED system
source	K. Khozeimeh ed., Computing in Civil Engineering, Volume 1, Proceedings of the First Congress held in conjunction with the A/E/C Systems `94, Washington, DC, June 20-22, 1994, New York: American Society of Civil Engineers
summary	We present the requirements for case-based design in a software environment to support the early phases in building design and outline an approach to satisfy them. We briefly discuss implementation issues and the larger information management context for the work.
series	other
email
last changed	2003/04/23 15:50

_id	8c54
authors	Flemming, U.
year	1994
title	Get with the program: common fallacies in critiques of computer-aided architectural design
source	Environment and Planning B: Planning and Design 21, pp. 106-116
summary	Contributed by Susan Pietsch (spietsch@arch.adelaide.edu.au)
keywords	3D City Modeling, Development Control, Design Control
series	other
email
last changed	2003/02/26 17:24

_id	ddss9429
id	ddss9429
authors	Geerling, Heinrich
year	1994
title	A Proposal for a Framework for Business Re-engineering in Design and Realization of Artificial Environments
source	Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary	According to the Top-Down design process', this paper gives a generic and qualitative description of a Concurrent Engineering Environment, that should support the problem solving procedure in town planning and architecture in a modern quality oriented society. A system that is based on the principal of democracy might guarantee the preservation of quality in the projection and realization of artificial environments. This environment can be seen as a part of the today often discussed "digital democracy", which practically is based on a infrastructure of computers, interfaces, software systems, a network, databases and a data presentation, that is able to comprise the expectations of professionals involved in the architecture and town planning process. The paper will discuss what the role of the designer and coordinator of this computer environment looks like,in order to design, plan, build and coordinate activities for the realization of this Concurrent Environment and how several software engineers work concurrently to develop tools that guarantee a modular integration. The backbone of this environment is the definition and use of standards for data exchange. Basically those standards are derived from two domains: artifacts will be described in a product model data, while natural resources are described in spatial data. Town planning has to integrate both models. It will be discussed briefly how far the data modelling language EXPRESS of part 11 of the ISO 10303 (Express Language Reference Manual) might be useful to model GIS related problems. An example will describe how a scenario of activities, from registration of real world data to recognition of requirements of society, the definition of development plans through design(competition), lawfulness checking and construction until demolition should look like.
series	DDSS
email
last changed	2003/08/07 16:36

_id	d7f4
authors	Gross, M.D.
year	1994
title	Roles for Computing in Schools of Architecture and Planning
source	Journal of Architectural Education, Sep. 94, pp. 56-64
summary	A successful effort to incorporate computing in a school of architecture and planning must satisfy varying student objectives and encompass a range of computing roles. This article reviews these roles and presents a case study of computing at the College of Architecture and Planning (formerly Environmental Design) at the University of Colorado at Boulder. Three categories of instruction make up the curriculum: Tool-using courses teach specific applications, tool-building courses focus on developing new design software, and design theory and methods courses provide rationale for specific computational approaches. Finally, strategies employed in developing this curriculum are discussed.
series	journal paper
email
last changed	2003/04/23 15:14

_id	412e
authors	Gross, M.D., Do, E. and McCall, R.J.
year	1997
title	Collaboration and Coordination in Architectural Design: approaches to computer mediated team work
source	TeamCAD 97, 17-23
summary	In 1993 and 1994, instructors and students of architecture at several universities around the world* collaborated briefly on two "virtual design studio" projects. Using off-the-shelf technology of the time-email, CU-See-Me internet video, international conference calls, and exchange of CAD drawings, images, and Quicktime animations-this ambitious project explored the possibility of bringing together diverse members of an international design team together to collaborate on a short term (two week) project. Central to the "Virtual Design Studio" was a 'digital pinup board', an area where participating designers could post and view drawings and textual comments; video links and email exchange provided the media for direct communication media about designs. A report on the project [21] makes clear that the process was not without technical difficulties: a significant amount of communication concerned scheduling and coordinating file formats; disappointingly little was devoted to discussions of design issues. Although it's clear that many of the minor technical problems that inevitably plague a forward-looking effort like the Virtual Design Studio will be solved in the near term, the project also reveals the need for research on software and design practices to make computer mediated design collaboration realize its attractive promise.
series	journal paper
email
last changed	2003/04/23 15:50

_id	a163
authors	Gross, Mark D.
year	1994
title	The Fat Pencil, the Cocktail Napkin, and the Slide Library
doi	https://doi.org/10.52842/conf.acadia.1994.103
source	Reconnecting [ACADIA Conference Proceedings / ISBN 1-880250-03-9] Washington University (Saint Louis / USA) 1994, pp. 103-113
summary	The paper describes recent explorations in sketch recognition and management to support architectural design. The exploration and decisionmaking of early, conceptual design is better suited to freehand drawing, sketching, and diagramming than to the hard-line drawing and construction kit approaches of traditional CAD. However, current sketch programs that simulate paper and pencil fail to take advantage of symbolic manipulation and interactive editing offered by computational environments. The paper presents a computer as cocktail napkin' program, which recognizes and interprets hand-drawn diagrams and provides a graphical search facility, simulated tracing paper, and a multi-user shared drawing surface. The cocktail napkin is the basis of Stretch-A-Sketch, a constraint-based draw program that maintains spatial relations initially specified by a diagram. The cocktail napkin program is also the basis for a query-by-diagram scheme to access a case-based design aid as well as a small collection of images of famous buildings. The paper briefly reviews these extensions of the cocktail napkin program.
series	ACADIA
email
last changed	2022/06/07 07:51

_id	f42b
id	f42b
authors	Hofmeyer, Herm
year	1994
title	KONSTRUKTIEF ONTWERPEN MET BEHULP VAN COMPUTERPROGRAMMATUUR (1) VERSLAG AFSTUDEERPROJECT (2) BIJLAGE GEBRUIKSAANWIJZING, CODE EN TOELICHTING BIJ PROGRAMMA
source	Technische Universiteit Eindhoven, Department of Architecture, Building and Planning, Structural Design Group
summary	This thesis presents the first basics of an expertsystem to transform a spatial into a structural design. The system thus relates space-allocation techniques and structural design software for stress-engineering. For the implementation Prolog-2 was used. Although in Dutch, the thesis provided background information for more recently written papers for eCAADe (2005) and CAADRIA (2006). The thesis was published as a paper in Design Studies (2006).
keywords	space-allocation; structural design; expert system
series	thesis:MSc
type	normal paper
email
last changed	2006/04/21 07:58

_id	da71
id	da71
authors	Horne, Margaret
year	2004
title	Visualisation of Martyr’s Square, Beirut
source	CONVR2005 5th Conference of Construction Applications of Virtual Reality, ADETTI/ISCTE, Durham, UK, 12-13 September 2005
summary	Solidere, a Lebanese joint-stock company, was created by government decree in 1994 to reconstruct Beirut city-centre. The company, a form of public-private partnership, has a majority share holding of former owners and tenants of city-centre property. Several projects are underway, including the redevelopment of Place des Martyrs, once the bustling heart of Beirut but badly damaged during the war. Urban planners in Beirut have recently developed a 3D computer model to visually describe the spatial characteristics of Martyr’s Square and its context, prior to inviting design proposals for an international competition. This paper describes issues pertaining to the development of the model to meet the needs of urban designers and town planners. It also considers potential future uses of the simulation, outlining areas for further research and development.
keywords	Beirut, 3D Modelling, Visual Simulation, Town Planning
series	other
type	normal paper
email
last changed	2006/06/08 22:10

_id	ddss9450
id	ddss9450
authors	Kohsaka, Hiroyuki
year	1994
title	Spatial Decision Support System for Retail Activity
source	Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary	This presentation proposes an architecture of Spatial Support System (SDSS) for retail activity. This SDSS is made up of four key modules: data, monitoring, spatial analysis/modelling, and map and report generators. In the data module, spatial shopping data are gathered from Point of Sales (POS) Systems as well as trade area surveys. Two examples will be presented to collect spatial shopping data. One is from an ordinal trade area survey and the other is from point IC cards. The monitoring module can represent retail trade areas as three-dimensional surfaces as well as contour maps by using a colour graphics display after a cartographic analysis which consists of gridding and interpolation of these data. As an application example of monitoring module, retail trade area for a store or a shopping street will be shown as a three-dimensional surface. In addition, themonitoring module can describe a retail structure consisting of the trade area of several retail stores to analyze the spatial competition of them. In the spatial analysis/modelling module, optimization methods search for an optimal location of a new store and an impact analysis assesses the locational impacts of the store upon the existing stores. An optimal location of new supermarket will be solved as an example for this module.
series	DDSS
email
last changed	2003/08/07 16:36

_id	b59a
authors	Kosslyn, S.M.
year	1994
title	Image and Brain: The Resolution of the Imagery Debate
source	The MIT Press, Cambridge, p. 1
summary	Kosslyn (psychology, Harvard U.) presents a 20-year research program on the nature of high-level vision and mental imagery--offering his research as a definitive resolution of the long-standing "imagery debate," which centers on the nature of the internal representation of visual mental imagery. He combines insights and empirical results from computer vision, neurobiology, and cognitive science to develop a general theory of visual mental imagery, its relation to visual perception, and its implementation in the human brain.
series	other
last changed	2003/04/23 15:14

_id	ddss9455
id	ddss9455
authors	Kraria, H. and Bridges, Alan
year	1994
title	Building Integration Tools for Collaborative Design
source	Second Design and Decision Support Systems in Architecture & Urban Planning (Vaals, the Netherlands), August 15-19, 1994
summary	For many years, research in CAAD systems has been mostly oriented towards single environ-ments, thus restricting the designer to a static environment. In reality the activities of user designers constantly interact with other participants activities (i.e. a structural engineer, services engineer, etc.). For instance, the architect is heavily influenced by the nature of the structural engineering process. It defines the character and integration of the basic components in other words, design is a collaborative process carried out by several participants with a single overall objective. The separation of architectural and engineering aspects in building design has brought on isolated computer tools. These tools are not interchangeable, the situation demands for their integration, all the interaction are supported by the social aspect of members of group participa-ting in collaborating work. The benefits of sharing CAD tools and related data between all members of the design team are that everyone works on the same information, co-ordination is easier and more accurate, and there is a reduction in the amount of repetition, as the need to redraw information is eliminated. The result is an increase in the accuracy and speed of the production of drawings. The technological aspects to support collaborative work and in particular the interaction process in design, is the main work issue being carried out at Strathclyde University, Department of Architecture and Building Science, Glasgow, Scotland U.K.
series	DDSS
email
last changed	2003/08/07 16:36

_id	ecaade2023_54
id	ecaade2023_54
authors	Abdulmajeed, Abdulwahab, Agkathidis, Asterios, Dounas, Theo and Lombardi, Davide
year	2023
title	Mass-customisation of dwellings in the Middle East:developing a design-to-fabrication framework to resolve the housing crisis in Saudi Arabia
doi	https://doi.org/10.52842/conf.ecaade.2023.2.157
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, pp. 157–164
summary	The Saudi government is taking the initiative to modernise the country and address critical challenges. One of its primary goals is to relieve the housing deficit. One of the challenges in supplying the houses is that potential inhabitants have denied and refused to accept them due to their design failing to meet their demands. Furthermore, the government suffers from providing high-quality housing in line with people’s needs because only a few enterprises can meet the client’s needs, but only at the price of lengthy planning and building times, in addition to increased construction expenses. This research aims to propose a mass customisation design-to-fabrication workflow, which targets environmental optimisation, reduction of construction time and reduced cost and incorporates client involvement. Our research method includes conducting a survey with Saudi Arabian architecture firms to collect data about contemporary clients’ needs, analysing and reviewing mass-customisation tools & techniques, developing a bespoke algorithm capable of mass-customising housing and evaluating the algorithm through design experiments. Our findings present the advantages and challenges of our tool as well as a shape grammar of mass customised floor plan solutions.
keywords	Mass Customisation, Parametric Design, Housing Design
series	eCAADe
email
last changed	2023/12/10 10:49

_id	ecaade2023_426
id	ecaade2023_426
authors	Adelzadeh, Amin, Karimian-Aliabadi, Hamed and Robeller, Christopher
year	2023
title	Wave-edge Modeling Method for Segmented Timber Plate Shell Structures: A computational tool for optimizing the bonding area of CLT joints
doi	https://doi.org/10.52842/conf.ecaade.2023.1.301
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, pp. 301–310
summary	The paper presents an algorithmic modeling tool for segmented timber shell structures made of glued wave-edge CLT plates. The goal is to provide a larger bonding area and thereby higher adhesive strength between plates, especially where a higher tension-resistant capacity is required. In addition to a number of contemporary research for exploring stereotomic modules, the inspiration is taken from the long history of the traditional glued finger joints in carpentry where they are used for providing higher interlocking capacity and adhesive strength. The structural performance of regular and glued finger joints is directly proportional to the bonding area between adjoining elements where they are interlocked and glued. Hence, expanding the shared faces would intrinsically magnify the structural performance of the glued finger joints. The paper presents the modeling method of a material-efficient, grain-informed, and structurally-optimized wedge edge joint system for the multi-shaped shell structures where the wave pattern is chosen for generating smoother fabrication toolpaths compared to any sharp-cornered pattern. The algorithm developed by the authors can efficiently maximize the glue bond by optimizing the wave-edge properties dynamically with respect to the geometric design, material system, and structural analysis within a feedback loop. The wave-edge properties directly affect the material waste and fabrication time and cost; therefore, the production parameters could be directly considered and controlled within the design process. The algorithm is able to produce the structural data model for the direct RFEM structural analysis, and fabrication data for automated production of multitude elements. The paper argues the application possibilities and limitations of the joint system for multi-shaped timber plate shells made of a multitude of geometrically-differentiated timber plates.
keywords	Algorithmic Design, Wave-edge Joint System, CLT, Shell Structure, Timber Prefabrication
series	eCAADe
email
last changed	2023/12/10 10:49

_id	ecaade2023_439
id	ecaade2023_439
authors	Adelzadeh, Amin, Karimian-Aliabadi, Hamed, Ahlund, Karl and Robeller, Christopher
year	2023
title	ReciprocalShell: A hybrid timber system for robotically-fabricated lightweight shell structures
doi	https://doi.org/10.52842/conf.ecaade.2023.1.651
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, pp. 651–660
summary	Reciprocal timber systems have been widely studied, however they have never been directly applied to the segmented timber shell structures as cross bracing of the polygonal topologies. For the first time, this paper presents an innovative hybrid timber system developed for design and construction of the robotically-fabricated lightweight timber shell structures. The paper integrates two configurations of wood beams: polygonal framing and reciprocal bracing. While, the polygonal topology of facets enables a constant distance offset for the thickness of the shell, the reciprocal configuration allows for cross bracing of polygonal frames where diagonals within the polygons cannot directly connect corners due to geometric constraints resulted by the free-form surface structure of shell shapes. Joining the cross-bracing elements in the center of the polygons with a reciprocal node reduces the complexity of the connection system at nodes while demonstrating the high load-bearing capacity of joints to withstand structural loads throughout the structure, compared to connecting 5, 6 or 7 beams in a single point. The article discusses the application and limitations of the timber system while presenting the design-to-assembly process of a case study of the small-scale shell demonstrator with the maximum span of 7.5 meters made of 144 wood elements for each polygonal and reciprocal configurations. The results show that the timber system has a great capacity for the rapid and precise assembly and disassembly of prefabricated timber structures. Generation of similar but different solid elements, allowed for the development of a custom CAD data interface for the automated production of numerous pieces, where simple joint details are applied for both alignment and attachment of beams, reducing the design complexity and facilitate the construction phase. As the result, the fabrication process was completely carried out with only a saw blade in a multi-axis robotic fabrication set up that enables the rapid, precise, and accurate cuts and grooves. Both timber configurations generate a uniform distribution of beam size, meaning that the production process created only a minimal amount of offcuts that allows for the use of simple and cost-efficient, short solid wood pieces.
keywords	Hybrid Timber System, Reciprocal Shell, Robotic Fabrication, Timber Shell, Lightweight Structures
series	eCAADe
email
last changed	2023/12/10 10:49

_id	ecaade2023_74
id	ecaade2023_74
authors	Agkathidis, Asterios, Jourdan, David, Song, Yang, Kanmani, Arathi and Thomas, Ansha
year	2023
title	Four-Dimensional Printing on Textiles Evaluating Digital File-to-Fabrication Workflows for Self-Forming Composite Shell Structures
doi	https://doi.org/10.52842/conf.ecaade.2023.1.491
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, pp. 491–498
summary	This design-led research investigates the development of self-forming wearable composite structures by printing embossed patterns out of flexible filament on pre-stretched textiles and releasing the stress after the printing has been completed, whereby time becomes the fourth dimension of the printing process. In particular, the study presents and compares three methods of ‘file-to-fabrication’ techniques for generating self-forming textile shell structures: The first is based on modified geometrical patterns in relation to curvature analysis, the second on printed patterns related to their stress line simulation and the third on an analysis of the anisotropic shrinking behaviour of stripe patterns. The findings emphasize the advantages and challenges of each method as well as present a comparative table chart highlighting the relationship between material properties, pattern geometry and the formal vocabulary of the composite shells.
keywords	4D printing, additive manufacturing, textile wearables, digital materiality
series	eCAADe
email
last changed	2023/12/10 10:49

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