Credits

Owner: Smithsonian Institute

Client: Hensel Phelps Construction Co.

Architect: Hellmuth, Obata & Kassabaum (HOK)

Structural Engineer: Spielgel, Zamenick & Shah Inc.

Fabricator: ADF Group

Total Height:
Hangar: 103-foot high
Tower: 200-foot high

DTI's: 1 1/8" A490 and larger