San Diego International Airport New Terminal 1
Background
The New T1 project at San Diego International Airport will replace the outdated Terminal 1 with a more modern and efficient facility that will enhance the traveler experience. The project also includes airfield and transportation improvements to make it easier to get to and from the airport.
The New T1 will have upgraded amenities – including 30 new gates and more security checkpoints and gatearea seating to provide a seamless and comfortable traveler experience. New restaurants and shops will ensure travelers experience a taste of San Diego and have an opportunity to purchase items needed for their trip. Additionally, Terminal 1 and Terminal 2 will be connected post security eliminating passengers from having to go in and out of security for connecting flights. The project is a joint venture with Flatiron.
Challenge
During the initial design phase, the project encountered a significant challenge due to the unforeseen impact of the Covid-19 pandemic. The pandemic caused disruptions in the steel industry, leading to a surge in steel prices and availability issues. This presented a budgetary challenge for the project, as the rising costs of structural steel threatened to strain the financial feasibility of the new terminal.
Solution
In response to the escalating steel prices, the ARRIVE JV team of Turner and Flatiron, proposed a strategic shift from the initially planned structural design to a braced frame structure. The rationale behind this proposal was to reduce the overall weight of the structure, thereby mitigating the financial challenges posed by the volatile steel market.
Upon the presentation of the braced frame proposal, San Diego International Airport Authority (SDIAA) expressed valid concerns related to potential intrusions into pathways and door locations, as well as issues such as tripping
hazards and low clearances. These concerns highlighted the need for a thorough evaluation and reassessment of the proposed structural changes.
Acknowledging the concerns raised by SDIAA, the ARRIVE JV team undertook a comprehensive analysis. The team not only addressed the safety issues associated with braced frames but also presented examples of terminals successfully built with similar structural elements. The focus was on integrating the brace frames into core walls and compartmentalization walls while ensuring the safety and architectural integrity of the terminal.
Structural steel dashboard
As a result of the collaborative efforts, the revised structural scheme saw the elimination of dozens of columns, exceeding 100 in total, due to the adoption of the braced frame structure. This structural modification not only addressed budgetary concerns but also had a positive impact on passenger experience. The reduction in columns contributed to improved wayfinding for passengers, clearer view corridors, and enhanced natural light penetration into public spaces.
The decision to transition to a braced frame structure proved to be a successful adaptation to the challenges posed by the Covid-induced disruptions in the steel market. The revised design not only met safety standards but also resulted in a more aesthetically pleasing and passengerfriendly terminal. This effort underscores the importance of collaboration, adaptability, and innovative problem-solving in the successful execution of large-scale construction projects, especially in the face of unforeseen external factors like a global pandemic.
10,000 tons of steel eliminated
$9,000,000 of concrete & earthwork eliminated (fewer pile caps/grade beams)
$4,000,000 in column covers eliminated
$50,000,000+ saved on the entire project