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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After a brief review of the underlying technology for the implementation of the inference engine, the paper demonstrates an actual design session using a bi-directional thermal simulation tool. Specifically, a use-scenario is described in which the designer explores the tradeoffs between various design variables (glazing area, glazing type, and floor mass) in view of the resulting energy performance of a typical residential building. The paper concludes with a discussion of the potential and limitations of the bi-directional approach toward active convergence support for performance-oriented design development.
The BDA provides a graphical user interface that consists of two main elements: the Building Browser and the Decision Desktop. The Browser allows building designers to quickly navigate through the multitude of descriptive and performance parameters addressed by the analysis and visualization tools linked to the BDA. Through the Browser the user can edit the values of input parameters and select any number of input and/or output parameters for display in the Decision Desktop. The Desktop allows building designers to compare multiple design alternatives with respect to any number of parameters addressed by the tools linked to the BDA.
The BDA is implemented as a Windows-based application for personal computers. Its initial version is linked to a Schematic Graphic Editor (SGE), which allows designers to quickly and easily specify the geometric characteristics of building components and systems. For every object created in the SGE, the BDA supplies “smart” default values from a Prototypical Values Database (PVD) for all non-geometric parameters required as input to the analysis and visualization tools linked to the BDA. In addition to the SGE and the PVD, the initial version of the BDA is linked to a daylight analysis tool, an energy analysis tool, and a multimedia Case Studies Database (CSD). The next version of the BDA will be linked to additional tools, such as a photo-accurate rendering program and a cost analysis program. Future versions will address the whole building life-cycle and will be linked to construction, commissioning and building monitoring tools.
The experimental use of various media is of major Importance for architects. Nevertheless, the author of this article is convinced that architects and designers will continue to make physical models. During the design process. however, the designer might wish to transfer the design idea into the computer. If he has already made a physical model, it will take him much time to recreate the same model on the screen by means of his CAD programs. This would be different if it were possible to digitize the existing physical model and then to continue designing on the computer. In this paper, the author describes some 3D-scanning methods based, on computer tomograms. Also the inverse combination of modeling and digitizing would be useful. So-called 3D-printing methods could help architects to transform their model on the screen into physical models during or at the end of the computer supported design process.
In this paper, the author will give a survey on how designers can use input and output devices to generate digital data from a physical model and - vice versa - to transform a digital design solution into a physical model. The reader will get an impression of both procedures from the examples given.
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