Carpatec is a company dedicated to Textile Architecture, Mobile Structures and Canopies with design, structural calculation, manufacturing and installation under one roof. Typically, the design of membrane structures and their details are governed by a design brief, the project location, the installation process, and in practice often by economic constraints. Compared to what architecture schools and other project designs usually teach, many of our designs are governed by rather unusual parameters. This paper presents 3 categories of case studies (i) cover roof for children's playgrounds, (ii) energy saving membranes on facades of existing buildings and (iii) textile covers for outdoor gyms and sports courts. All of them are significantly influenced by such unusual design drivers including strictly safety focused aspects, the omission of certain structural elements such as inclined cables and pin-jointed masts, the preference of flat membrane surfaces for optical reasons or specific sport regulations. The examples presented introduce projects between technical requirements, standards and special conditions and open the discussion about constraints, conflicts and creative approaches to solutions.