Expert Systems for Structural Design

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Abstract
This paper considers the role the computer can have in less‐formalized phases of the structural design process, particularly during preliminary design. Since preliminary design is based largely on the designers experience, an expert systems approach to developing computer aids is appropriate. Four expert systems are presented HI‐RISE, FLODER, LOCATOR, and STRUPLE. HI‐RISE was the first system developed and serves as the basis for current research. HI‐RISE identifies a formalization for preliminary structural design as a synthesize, analyze, and evaluate paradigm. HI‐RISE illustrates that although computer aids can be developed for preliminary design, much work needs to be done before such aids can be practical. FLODER is an expert system that addresses the decisions made in generating a structural grid for a building. LOCATOR proposes a methodology for generating alternative placement schemes for a lateral load resisting system on a given grid. STRUPLE serves as a preprocessor to the synthesis part of the preliminary design by using past experience to identify the structural subsystems and materials relevant to the current design.

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