The GLIDE Language for CAD

by Charles M. Eastman, Prof.; Inst. of Building Sciences, Dept. of Architecture, Dept. of Computer Sci., School of Urban and Public Affairs, Carnegie-Mellon Univ., Pittsburgh, Pa.,
Max Henrion, Doctoral Candidate; School of Urban and Public Affairs, Carnegie-Mellon Univ., Pittsburgh, Pa.,

Serial Information: Journal of the Technical Councils of ASCE, 1980, Vol. 106, Issue 1, Pg. 171-184

Document Type: Journal Paper


This paper presents GLIDE, an integrated design database facility, that supports implementation of systems capable of incorporating all the information needed for the design and construction of large engineering projects. GLIDE is a computer language incorporating database, geometric modeling, graphics and command processor facilities. Some facilities have been described and others suggested that seem to be desirable for a general purpose engineering design database. In most facilities the importance of maintaining generality and flexibility are described, partly because of the great diversity of engineering practices, but partly also because of the lack of understanding of the design process. The ability to develop practical applications based on such systems will be strongly dependent on the development of better models of designing. It is for this reason that a section on the notion of abstraction hierarchies is included, as an indication of the kind of conceptual models that may be required. The development of a new generation of CAD applications must go hand in hand with the development of a better understanding of the design process.

Subject Headings: Computer aided design | Databases | Construction engineering | Computer models | Systems engineering | Computer languages | Geometrics | Graphic methods

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