Structural opportunities of ethylene tetra fluoro ethylene

Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Civil and Environmental Engineering, 2005.Includes bibliographical references (leaves 53-54).An exploration of ETFE (ethylene tetra fluoro ethylene) foil cushions was performed in its use for building cladding. ETFE foil cushions consist of alternating layers of ETFE film and air cavities. An inflation system pressurizes the foil cushions prestressing the film layers to carry applied load. The ETFE cushion system is an extremely lightweight plastic offering considerable advantages over traditional cladding materials. ETFE foil cushions are self-cleaning, highly transparent to light, resistant to weathering and can be manufactured in almost any shape and size. Incorporating ETFE into a building's cladding results in a more efficient and low maintenance structure. ETFE foil cushions are successfully being implemented in cladding for botanical gardens, zoo buildings, and swimming pools. ETFE is currently finding its place as an effective alternative to glass in more traditional buildings as roofing for courtyards, atria, and shopping malls.by Leslie A. Robinson.M.Eng