The natural fibers sustainable use in architectonic structural membranes construction is the main question of this dissertation. The association between the Textile Modular Systems and the inter-actions studies between natural fibers, technologies, and environment, aloud to incorporate into conception and manufacturing strategies of Architecture & Design objects , textile craftsmanship technologies and sustainable environment parameters. Social and environment footprints perceived, industrial and craftsmanship technologies of natural fibers uses, their relations to the social and material environment, and the strategies learned from Nature and reproduced through experiences in Architecture & Design, are investigated here. The consumation of the Experimental Methodology through prototypes aloud to elaborates the principles that conceived the basis of the Textile Modular Systems. The investigations accomplished contribute to improve and adequate the textile craftsmanship technologies and the available non-patterned natural fibers, adapting them to several contexts through the Textile Modular Systems.