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
Hits 1 to 20 of 519
Reformat results as:
short into frame
detailed into frame
Within contemporary digital environments, there are increasing
opportunities to explore and evaluate design proposals which integrate
both architectural and landscape aspects. The production of integrated
design solutions exploring buildings and their surrounding context is now
possible through the design development of shared 3-D and 4-D virtual
environments, in which buildings no longer float in space.
The scope of landscape design has expanded through the application of
techniques such as GIS allowing interpretations that include social,
economic and environmental dimensions. In architecture, for example,
object-oriented CAD environments now make it feasible to integrate
conventional modelling techniques with analytical evaluations such as
energy calculations and lighting simulations. These were all ambitions of
architects and landscape designers in the 70s when computer power
restricted the successful implementation of these ideas. Instead, the
commercial trend at that time moved towards isolated specialist design
tools in particular areas. Prior to recent innovations in computing, the
closely related disciplines of architecture and landscape have been
separated through the unnecessary development, in our view, of their
own symbolic representations, and the subsequent computer
applications. This has led to an unnatural separation between what were
once closely related disciplines.
Significant increases in the performance of computers are now making it
possible to move on from symbolic representations towards more
contextual and meaningful representations. For example, the application
of realistic materials textures to CAD-generated building models can then
be linked to energy calculations using the chosen materials. It is now
possible for a tree to look like a tree, to have leaves and even to be
botanicaly identifiable. The building and landscape can be rendered from
a common database of digital samples taken from the real world. The
complete model may be viewed in a more meaningful way either through
stills or animation, or better still, through a total simulation of the lifecycle
of the design proposal. The model may also be used to explore
environmental/energy considerations and changes in the balance
between the building and its context most immediately through the growth
simulation of vegetation but also as part of a larger planning model.
The Internet has a key role to play in facilitating this emerging
collaborative design process. Design professionals are now able via the
net to work on a shared model and to explore and test designs through the
development of VRML, JAVA, whiteboarding and video conferencing. The
end product may potentially be something that can be more easily viewed
by the client/user. The ideas presented in this paper form the basis for the
development of a dual course in landscape and architecture. This will
create new teaching opportunities for exploring the design of buildings
and sites through the shared development of a common computer model.
Prior to the experiment an extensive literature search was carried out to explore the relationship between
the design process, visual thinking, conventional sketching (interactive imagery) and Computer Aided
Design. Out of this search a number of design variables were identified, developed and then tested
through a series of observations and interviews with the students while they were engaged in the design
of the Graphic Designer’s Studio. Questionnaires were also administered to students to explore their
views on issues including, using CAD instead of conventional tools, design areas where CAD is most
effective, and how CAD can improve design skills.
Pairs of participants were set a design problem and asked to solve it in face-to-face settings. The same problem was then tackled by participants in settings using two different modes of computer-supported communication: email and an electronic whiteboard. Protocols were collected and analyzed in terms of the constraints of each tool relative to the task and to each other. The GOMS methodology was used as a way to represent the collaborative design process in a way that yields information on both the productivity and performance of participants in each of the three experimental conditions. It also yielded information on the component elements of the design process, the basic cognitive building-blocks of design, thereby suggesting fundamentally new tools that might be created for interaction in virtual environments.
A further goal of the study was to explore the nature of task differences in relation to alternative platforms for communication. It was hypothesized that design processes involving significant negotiation would be less aided by computer support than straight forward design problems. The latter involve cooperative knowledge application by both participants and are therefore facilitated by information-rich forms of computer support. The former, on the other hand, requires conflict resolution and is inhibited by non face-to-face interaction. The results of this study point to the fact that the success of collaboration in virtual space is not just dependent on the nature of the tools but also on the specific nature of the collaborative task.
The main reasons that may explain this situation can be identified rather easily, although there will be
significant differences of opinion. Mine is that it is a mistake trying to advance too rapidly and, for
instance, propose integrated design methods using expert systems and artificial intelligence resources
when do not have still an adequate tool to generate and modify simple 3D models.
The modelling tools we have at the present moment are clearly unsatisfactory. Their principal limitation is
the lack of appropriate instruments to modify interactively the model once it has been created. This is a
fundamental aspect in any design activity, where the designer is constantly going forward and
backwards, reelaborating once and again some particular aspect of the model, or its general layout, or
even coming back to a previous solution that had been temporarily abandoned.
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.
For more results click below: