Clad with 800000 sq ft of Hypalon c...
Clad with 800000 sq ft of Hypalon chlorosulfonated polyethylene roofing, the Smithsonian National Air and Space Museum's Steven F Udvar-Hazy Center at Washington's Dulle International Airport will unclose in December. Resembling a large aviation hanger, the center's barrel-vault design rises 10 stories tall and flows the length of 2 1/2 football fields. It contains an archival resource center a large-format theater, and restaurants and museum workshops The ...
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