This seminar explores the design of tensile membrane structures and their potential to address contemporary environmental issues. Through lectures and practical exercises, students learn basic design principles, become familiar with digital and physical form-finding techniques, understand detailing, manufacturing and installation procedures, as well as the potential and limitation of the different materials typically used in this type of constructions. Students are required to individually develop an architectural project related with membrane structures in order to demonstrate their understanding of this kind of building technology. In addition, the seminar is currently proposing to design, manufacture and install a membrane roof for the California College of the Arts San Francisco campus entrance courtyard. This design-build exercise will offer students the possibility of developing a project all the way from its conceptual design to its final erection, to handle construction materials directly and work in scale 1 to 1.