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Computer Aided Architectural Design -CAAD
Computer Aided Architectural Design or CAAD software programs are the repository
of precise and comprehensive records of buildings, which are used by architects
and architectural companies. In the 1960's, the first program was installed to
assist architects in saving time by not having to draw blueprints. Computer aided
design (CAD) was originally a program that architects used, however, because CAD
couldn't provide the architects all the tools that they require to complete a project,
CAAD was created. Every CAD systems has a database with geometric as well as some kind of graphic
user interface in which to manipulate a visual representation rather than the database.
In addition, all CAD are more or less concerned with assembling designs from (non)
standard pieces. The only significant distinction, between CAAD and CAD, lies in
the domain knowledge embedded in the system such as architecture-specific objects,
techniques, data, and process support. A CAAD system contains these two main differences from CAD:
1.CAAD has an explicit object database of building parts and construction knowledge.
2.CAAD explicitly supports the creation of architectural objects. CAAD has two structure types in its program, the first being surface structure.
This system provides a graphics medium to represent 3-D objects using 2-D representations.
It also contains algorithms that permit the creation of patterns and their analysis
using programmed criteria. In addition, this system has data banks, which store
information about the problem and the standards and regulations that applies to
it. The second system of CAAD is deep structure, meaning that the operations performed
by the computer have natural limitations. The computer hardware and machine languages
supported by these make it simpler to perform arithmetical operations accurately
and quickly. CAAD has another advantage, which is its two ways mapping of activities and functionalities.
The two types of mapping are indicated to be between the surface structures and
the deep structures. Both mappings are abstractions, which are present in order
to discuss the process of design and deployment of CAAD systems. An architect's work involves mostly visually represented data, where problems are
outlined and handled with in a graphical approach. Therefore, the designer should
have maximum visual control over the processes taking place with in the design continuum.
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