Later, in 1958, he would organize the First Congress of International Association for Shell Structures. I. The following stages in the design of concrete shell roofs can be identified. Verification of the adequacy of concrete … However, he was a principal in the design and construction of the Georgia Dome in Atlanta, a lightweight tensegrity structure completed in 1992. Where required for design of thin shell concrete structures, provisions of ACI 318 are to be used to complement the provisions of this Code. Design/verification of shell reinforcement 4. Analysis of internal stress resultants and dis­ placements 3. designs in concrete shell structures and along with Jose Maria Aguirre, founded the Experimental Institute for New Uses and Theories for Reinforced Concrete. Similarly, Khaled Shawwaf, of DYWIDAG Systems Determination of the shell form, its supports and loads (limit states) 2. Organizing this was in part due In addition, recent developments in concrete technology have led to ultra high performance fibre reinforced concrete with revolutionary performance in tension and compression. This document governs the design of thin shell concrete structures, previously presented in ACI 318-11 Chapter 19. He surmised that 40 years ago, this dome might have been built as a concrete shell. In the history of thin-shell structures, four of the major influences are: Anton Tedesko (1903-1994), who is attributed with much of the success of thin-shell structures in the U.S; Pier Luigi Nervi (1891-1979), who in Italy gave structural integrity to the complex curves and geometry of reinforced-concrete structures such as the Orbetello aircraft hangar (begun 1938) and Turin’s … involved in a thin concrete shell project since the late 1970s. Eventually this may lead to a revival of the thin concrete shell. 1.8 "Concrete Shell Structures Practice and Commentary" (1992) 1.9 "Contributions of André Paduart to the Art of Thin Concrete Shell Vaulting" (2003) 1.10 Analysis of Thin Concrete Shells Revisited (2008) 1.11 A Thin Shell Trolley Barn for Seattle's Water Front (2010) As part of the research "Design and Performance of Ultra-Thin Concrete Shells", the proposed study seeks to explore the architectural dimension of an ultra-thin free-form shell structure. thin shells is over, however, nowadays natural free-form shapes and blobs attract more and more attention. The most popular types of thin-shell structures are: Concrete shell structures, often cast as a monolithic dome or stressed ribbon bridge or saddle roof; Lattice shell structures, also called gridshell structures, often in the form of a geodesic dome or a hyperboloid structure