Steel Shots: Seamless Structure

The new roof structure at Austin‐Bergstrom International Airport’s Terminal East infill. (Photo: Joel Blok) 

Austin-Bergstrom International Airport’s 55,000-sq.-ft terminal expansion honors the vocabulary of the existing terminal building while adopting a fresh and bold new aesthetic to reflect the vibrancy of the city the airport serves.

A key component of the new space is a grand hall on the concourse level that will include up to 10 screening lanes for passengers. It was essential that this space be kept free of interior columns in order to facilitate passenger queueing and preserve sightlines for TSA security requirements. The two‐way oval high roof system – 50 ft above the concourse floor – is comprised of a central spine that runs nearly 200 ft between the east and west ends of the building. From this spine, symmetric pairs of roof box beams flare out to perimeter box columns spaced at 12 ft on center around the perimeter of the space. Each pair of beams joins the spine in a seamless “node,” with welded connections providing an elegant transition between roof elements. Similarly, the roof beams are welded seamlessly to the tops of the box columns at the perimeter.

Hirschfeld Industries, San Angelo, Texas (an AISC Member and Certified fabricator) was the steel fabricator for the project and Patriot Erectors, Dripping Springs, Texas (an AISC Member and Advanced Certified Steel Erector) was the project’s steel erector. The design‐build team was led by Hensel‐Phelps Construction Company (HPCC); Page (formerly Page Southerland Page) is the architect of record, and Architectural Engineers Collaborative (AEC) provided structural engineering services. 

The terminal expansion, including the main hall at the concourse, opened to the public on July 1. Renovations to the existing terminal will be complete in September. 

You’ll be able to read more about the project in the September issue of MSC