Building anything at the busiest airport in the world is bound to involve logistical challenges, but planners had a truly ambitious goal in mind for the Atlanta Hartsfield-Jackson International Airport project: Build two soaring canopies — 864 feet long, 72 feet tall and 194 feet wide, arching over eight lanes of traffic each — without disrupting airport operations or the 275,000 passengers who pass through daily. By using high-efficiency HSS and advanced computer modeling, the team was able to create a pair of iconic landmarks for Atlanta’s gateway to the world without impeding the airport’s efficiency. The canopies at Atlanta Hartsfield-Jackson use HSS up to 20” OD, with walls up to 0.5“ thick, giving them high strength at a lower weight than would be possible with other kinds of steel members, such as wide-flange sections.

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