A grammar-based system for chair design: from generic to specific shape grammars

A shape grammar-based computational system for chair design is presented. The paper focuses on the development of a methodology for modelling the definition stage of the design process. It is achieved by incorporating a specific grammar into a generic grammar to assist the designer in the convergence activities during the definition stage. Both grammars and their respective implementations were previously developed by different authors. The purpose is to enable the generation of a generic design solution that encompasses characteristics of a specific style, thus permitting subsequent exploration in the development stage.