Article: AEC interoperability and the BLIS project: turning theory into practice-AEC design tools get smarter. (Cover Story).

Dutch-born computer scientist Jan L.A. van de Snepsheut (1953-1994), late of CalTech, was fond of saying, "In theory, there is no difference between theory and practice. But, in practice, there is!" That practical gap between theory and practice has been the bane of AEC software developers and users for nearly 30 years. As early as 1975, Dr. Chuck Eastman, then at Carnegie-Mellon and now at Georgia Tech, published a proof of concept or working prototype for an integrated, 3D, object-model CAD system for AEC that was theoretically capable of describing every component and material and of serving up graphical and non-graphical views and reports of model data on demand (this ...

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