Airport Concourse Construction Standards: Structural Design, Phased Delivery, and Sustainability in Modern Aviation Terminals

Los Angeles International Airport is undertaking one of the most ambitious aviation infrastructure modernization programs in the United States. As part of this multi-billion-dollar initiative, the construction of a new 450,000-square-foot concourse at the site of the former Terminal 3 satellite represents a landmark project in airport construction. This concourse, featuring 12 new gates with the capacity to handle over 5 million passengers annually, demonstrates how modern airport terminals are designed, engineered, and built under the constraints of an active airport environment. Understanding the construction standards, structural systems, and delivery methods behind this project provides valuable insights for building professionals working on large-scale infrastructure. This article examines the key construction disciplines involved, from structural steel framing and glass curtain wall systems to design-build project delivery and sustainability certification.

Structural Systems and Materials for Airport Concourse Construction

Modern airport concourses require structural systems that balance long clear spans for passenger circulation with efficient load paths for roof systems, mechanical equipment, and dynamic crowd loads. The LAX concourse project employs a steel-frame structural system, which is the predominant choice for large-span airport terminals worldwide.

Steel Frame Design for Long-Span Terminal Spaces

The structural design of an airport concourse must accommodate several critical requirements simultaneously. The steel frame at the new LAX concourse supports a roof system that provides column-free zones in passenger waiting areas, allowing flexible seating arrangements, retail kiosks, and unobstructed sightlines for wayfinding. Key structural design considerations include:

• Long-span steel trusses or girders that span 80 to 120 feet between columns in passenger hold rooms
• Composite steel deck and concrete slab systems for upper-level floor plates that support mechanical rooms and airline operations
• Lateral load resistance systems, typically braced frames or moment frames, designed to meet California seismic code requirements
• Deep foundation systems, including driven piles or drilled shafts, to transfer loads through existing apron pavement and subsurface utility conflicts

The structural engineer must also coordinate with the architectural curtain wall system, which at LAX consists of a glass and aluminum panel facade. The interface between the steel frame and the curtain wall requires careful detailing to accommodate thermal movement, wind loads, and seismic drift without compromising the building envelope.

Glass Curtain Wall and Building Envelope Systems

The building envelope of a modern airport concourse serves both aesthetic and functional purposes. The LAX concourse features a glass curtain wall that maximizes natural daylight in passenger areas while providing thermal performance appropriate for Southern California’s climate. The curtain wall system incorporates several performance features:

1. Low-emissivity coated glazing to reduce solar heat gain while maintaining visible light transmittance
2. Thermally broken aluminum frames to minimize condensation risk and improve overall envelope thermal performance
3. Structural silicone glazing for a clean exterior appearance with minimal visible mullions
4. Impact-resistant laminated glass in ground-level areas to meet airport security and blast resistance requirements

The design of glass and ceramic cladding systems for large public buildings requires coordination between the structural engineer, facade consultant, and glazing contractor to ensure proper load transfer, weather sealing, and long-term durability. Airport concourses place additional demands on building envelope performance due to jet blast, fuel vapor exposure, and frequent cleaning protocols.

Design-Build Delivery and Phased Construction at Operating Airports

Building a new concourse at one of the world’s busiest airports while the facility remains fully operational presents unique construction management challenges. The LAX project team selected a design-build delivery approach to accelerate the construction schedule and maintain operational continuity.

Design-Build Project Delivery for Complex Airport Projects

The design-build model, with Corgan serving as architect and PCL Construction as general contractor, integrates design and construction under a single contract. This delivery method offers several advantages for airport construction projects:

• Overlapping design and construction phases reduce overall project duration compared to traditional design-bid-build delivery
• Single-point responsibility for cost, schedule, and quality eliminates disputes between separate design and construction entities
• Early contractor involvement in design decisions improves constructability and reduces change orders during construction
• Integrated project teams can respond more quickly to operational constraints discovered during demolition or excavation

The new concourse was built on the footprint of a demolished satellite concourse that contained only six gates. The replacement structure doubles gate capacity to 12 while improving operational efficiency through a linear configuration that simplifies aircraft maneuvering and passenger flow.

Phased Construction in Active Airport Environments

Construction phasing at an operating airport requires meticulous planning and coordination with airline operations, airport security, and air traffic control. The project team developed a phased approach that included the following strategies:

1. Sequential demolition: Existing structures were demolished in stages to maintain apron access for aircraft parking at adjacent gates
2. Noise and vibration monitoring: Continuous monitoring ensured that demolition and pile driving did not exceed thresholds that could disrupt terminal operations or damage adjacent structures
3. Utility relocation: Existing fuel lines, electrical conduits, communications cables, and baggage handling tunnels were identified, protected, or rerouted before new foundation work began
4. Logistics coordination: Material deliveries, crane operations, and concrete pours were scheduled during low-traffic periods to minimize conflicts with aircraft ground operations

The project also required close coordination with the Tom Bradley International Terminal connection. The new concourse connects to TBIT via an elevated walkway and underground tunnel, enabling seamless passenger transfer between domestic and international flights. This connection required careful structural integration with existing buildings that were built decades apart using different construction standards.

MEP Systems and Security Infrastructure in Modern Airport Terminals

The mechanical, electrical, and plumbing systems in an airport concourse must support 24-hour operations, high occupant density, and stringent security requirements. The LAX concourse incorporates several advanced MEP systems designed for reliability, energy efficiency, and passenger comfort.

Heating, Ventilation, and Air Conditioning for Large Public Spaces

Airport concourses have unique HVAC requirements due to high ceiling volumes, large glazed areas, fluctuating occupancy levels, and the need to maintain comfort conditions at passenger boarding doors that open frequently to the apron. The HVAC design for the new concourse includes:

• Dedicated outdoor air systems that precondition ventilation air for improved humidity control and energy recovery
• Underfloor air distribution in boarding areas to deliver conditioned air directly to occupied zones rather than conditioning the entire volume of the high-ceiling space
• Displacement ventilation at gate seating areas to improve air quality and thermal comfort for waiting passengers
• Building management system integration that adjusts setpoints based on flight schedules and real-time occupancy data

The specification of energy-efficient HVAC systems in large public buildings reduces operational costs and supports sustainability certification. Airport terminals operate around the clock, making HVAC energy consumption a significant portion of total building operating expenses.

Electrical Systems and Standby Power Infrastructure

Airport terminals require electrical systems that can maintain critical operations during utility power interruptions. The LAX concourse includes 100 percent standby power coverage for critical systems. The electrical design incorporates the following components:

• Multiple utility feed sources with automatic transfer switches for seamless power source transitions
• Diesel generator sets sized to support security systems, baggage handling, boarding bridges, lighting, and life safety systems
• Uninterruptible power supply systems for security screening equipment, flight information displays, and data center operations
• Emergency lighting systems with battery backup meeting NFPA 101 life safety code requirements

Security Screening and Baggage Handling Integration

Modern airport concourses require integrated security infrastructure that meets Transportation Security Administration standards while maintaining efficient passenger throughput. The new LAX concourse features a full TSA checkpoint with advanced screening technology:

• Automated screening lanes that increase passenger throughput per square foot of checkpoint space
• Computed tomography scanners for carry-on baggage screening, reducing the need for secondary bag searches
• Integrated baggage handling systems that connect the new concourse to the existing Terminal 3 baggage sortation system
• Electronic access control systems throughout the concourse, segregating sterile and non-sterile zones

The baggage handling system represents a significant mechanical engineering challenge. The system must process luggage for both domestic and international flights, interface with existing infrastructure, and accommodate the baggage volumes generated by 12 gates serving widebody aircraft.

Sustainability Standards and Certification for Airport Construction Projects

Sustainability has become a central requirement in airport construction, driven by both owner sustainability goals and regulatory requirements. Los Angeles World Airports has committed to achieving LEED Silver certification or higher for new construction projects, and the new concourse is designed to meet this benchmark.

LEED Certification Strategies for Airport Terminals

Airport concourses face unique challenges in achieving LEED certification due to their high energy intensity, large glazed areas, and 24-hour operational schedules. The LAX concourse incorporates multiple strategies to earn LEED credits across several categories:

The project team conducted energy modeling early in the design phase to optimize the building envelope, glazing selection, and mechanical system efficiency before construction documents were finalized. This integrated design approach is a hallmark of high-performance building projects. Understanding LEED certification standards for building materials and design is essential for project teams pursuing sustainability goals in large-scale infrastructure projects.

Sustainable Construction Practices and Waste Management

Beyond building design, the construction phase of the LAX concourse incorporates sustainable practices that reduce the environmental impact of the building process itself. Key construction-phase sustainability measures include:

• Construction waste diversion targeting 75 percent or higher, with separate recycling streams for concrete, metal, wood, cardboard, and gypsum board
• Use of recycled-content materials in concrete mixes, including supplementary cementitious materials such as fly ash and slag cement
• Low-emission construction equipment and vehicle idling restrictions to reduce air quality impacts during construction
• Erosion and sedimentation control measures that exceed regulatory minimums, protecting stormwater systems from construction runoff
• Commissioning of all major building systems before occupancy to verify that energy performance meets design targets

The LAX concourse project also benefits from the airport’s broader sustainability framework, which includes a climate action plan, water conservation targets, and a zero-emission vehicle fleet transition. Airport construction projects that align with these broader organizational sustainability goals often achieve higher certification levels and greater operational savings over the building lifecycle.

The construction of new airport concourses like the one at LAX demonstrates how complex building projects integrate structural engineering, phased construction management, advanced MEP systems, and sustainability certification into a single cohesive delivery. Building professionals involved in large-scale infrastructure projects can apply the construction standards, delivery methods, and sustainability strategies used in airport terminal construction to a wide range of commercial and institutional building types. The lessons from LAX’s modernization program show that successful large-scale construction requires integrated teams, meticulous phasing, and a commitment to performance-based design standards.