Claudio F Guerri - Facultad de Arquitectura, Diseño y Urbanismo - Universidad de Buenos AiresPrivate address: Gral. Lemos ۲۷۰ - ۱۴۲۷ Buenos Aires - Argentina

In this paper, I propose a two-part answer to fundamental problems in architectural design. First, a newgraphic language—the Graphic Language TSD (Theory of Spatial Delimitation)—allows control ofpure-form design operations and is available to use with the free graphic software package CA-TSD.Second, an operative semiotic model—the Semiotic Nonagon, derived from the philosophical logic ofCharles S. Peirce—enables control of the innumerable variables of any architectural project. Throughthe semiotic nonagon, the need for a third graphic language—the TSD, after Perspective and theMonge System—is demonstrated.

Architecture, Design, Peircean Semiotics, Semiotic Nonagon, Graphic Language TSD,Graphic Software CA-TSD