San Francisco Int'l Airport Air Traffic Control Tower


Federal Aviation Administration and San Francisco International Airport


Construction Cost: $122 million
Completion Date: Aug 2015

Size: 55,000 SF integrated base facility

Height: 231 ft control tower

Sustainability:  LEED Gold

Feature: tallest control tower utilizing vertical post-tensioning

San Francisco Int'l Airport Air Traffic Control Tower

San Francisco

The seventh-busiest airport in North America, San Francisco International (SFO) is also one of the most challenging for air traffic controllers who safely guide more than 1,000 aircraft daily on four runways. New technologies and a seismically vulnerable existing tower — just four miles from the San Andreas Fault — led SFO to develop a new facility that exemplifies structural engineering innovation as it provides a safe, stable, and best-in-class workspace for controllers.

The Air Traffic Control Tower and Integrated Base Facility represent several firsts for the Federal Aviation Administration (FAA) — the first tower delivered with the airport in the lead, first delivered using a Design-Build bridging documents package, and the first to offer an observation cab with a 235-degree unobstructed view.

The tower’s structural system, a cast-in-place reinforced concrete core cylinder was selected employing performance-based seismic design. The tower was designed using vertical post tensioning to provide a self-centering action in the event of a major earthquake as well as a tuned mass damping system to mitigate accelerations due to wind. At the tower base, a three-story Integrated Base Facility (IBF) serves as office and administrative space for both the airport and the FAA. The IBF incorporates blast resistant design along the roadway and performance-based seismic design. We performed a nonlinear time history response analysis with Perform 3D to verify that the expected behavior of the structure would meet the airport’s performance objective of remaining operational at the Maximum Considered Earthquake.

For more detail about the San Francisco International Airport Air Traffic Control Tower, see our case study.

Click to view the ACEC 2016 Engineering Excellence Grand Conceptor Award video