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LAX Terminal 1.5

A significant project design element included structural design of the terminal building’s foundation system to span the existing City of Los Angeles Central Outfall Sewer (COS), a brick and mortar sewer pipeline constructed in the late 1930’s that crosses diagonally beneath the building.  Ninyo & Moore won the ACEC California Honor Award for Los Angeles International Airport (LAX) Terminal 1.5 and received an ENR California “Award of Merit” in the Airport/Transit – Southern California category.

Project Highlights:

  • Geotechnical Engineering
  • Geotechnical Observation and Testing
  • 5-Story Terminal Building

Ninyo & Moore provided geotechnical services for the design and construction of Southwest Airlines’ new Terminal 1.5 at Los Angeles International Airport (LAX). The new terminal has a footprint of approximately 52,000 square feet and consists of a five-story structure, including four above-grade levels and one basement level. The new structure connects Terminals 1 and 2, which were previously separated by an undeveloped, open-space area. The new structure is supported by a combination of shallow and deep foundations consisting of a combination of over 300 concrete cast-in-drilled hole (CIDH) and torque-down piles. Piles adjacent to the COS were deepened and constructed with steel sleeves around their upper portions to transfer new building loads beneath the COS. Zero lot line construction required special attention during design, and underpinning of portions of the existing structures, to see that new building loads and construction would not impact existing terminal buildings. The project included the removal and reconstruction of a new approximately 375-foot-long by 20-foot-high retaining wall along the north side of the lowest floor to account for ground elevation differences on each side of the building. The retaining wall excavation and building excavations, including the basement, extended to depths of up to approximately 44 feet and required the use of temporary shoring. The shoring consisted of 122 soldier piles with wood lagging and up to two rows of tie-back anchors (122 anchors). Other site work included construction of temporary crane pads, design of a temporary pad to bridge construction loads over the COS, construction of new aircraft pavements, and installation of new utilities.  

Please click the following link to view the 2022 Engineering Excellence Award Winners, including the Los Angeles International Airport LAX Terminal 1.5.
https://www.acec-ca.org/general/custom.asp?page=2022EEAWinners 

LAX Terminal 1.5 in the News
Article: LAX Terminal 1.5 Cited in National Engineering Competition

 

Project Details

Client:

Southwest Airlines c/o PGAL

Location:

Los Angeles, California

Client Testimonials

Paul Brown
"For over 25 years, Ninyo & Moore has performed in an outstanding manner on SDUPD as-needed environmental consulting services… Among Ninyo & Moore’s major attributes are a strong understanding of public sector client needs, innovative technical solutions, detailed understanding of regulations, and a proactive, professional relationship with regulators and consultants in the region."
Paul Brown
Program Manager
Environmental San Diego Unified Port District
Michael Grossman, P.E.
"I wanted to personally congratulate you and your team on wrapping up an extremely complex geotechnical project... The Bureau of Engineering, site soils conditions, and complex/revised structural system did not make for an easy scope of services… When faced with adversity your team was up to the task. It worked through a tough re-design/compressed time line, difficult series of approvals, and persevered…"
Michael Grossman, P.E.
Managing Director
AvAirPros: Milestone for Terminal 1.5 at Los Angeles International Airport (LAX)
Glenn Young
"Thank you for the incredible value, service, quality and impact… We are so appreciative of your commitment, expertise and experience in preparing plans and reports, obtaining superb field contracting services and providing professional field work. You are the best of the best."
Glenn Young
California Department of Resource and Recycling
Mark D. Claussen, PE
"Services provided include hazardous material investigation and documentation; geotechnical evaluation, testing and observation; and, special inspections and testing services. …I highly recommend Ninyo & Moore for all these services to any government agency tasked with the public safety, and providing timely and professional data to support both project schedule and budget development."
Mark D. Claussen, PE
Bond Program Manager
Southwestern Community College
Mark Stapledon
"Ninyo & Moore’s team is responsive, collaborative, and technically knowledgeable… I highly recommend Ninyo & Moore for these services to any other school district due to their excellent service, technical abilities, timely response to any request, and ability to support our schedules and budgets."
Mark Stapledon
Construction Management Supervisor
San Diego Unified School District
Mark Law
"Ninyo & Moore’s staff responded to the City’s needs and worked closely with our Capital Improvement Division to ensure cost effective recommendations and services. Ninyo & Moore’s team services are professional, client oriented, and provide quality reports."
Mark Law
Project Manager
City of Missouri City
Kay Khadem, CCM, PMP, LEED ®AP
"I wanted to take the time to thank you for the service your company provided to ours. We sincerely appreciate your customer service, how you’re always available to handle challenging issues, the excellent work you have demonstrated on every project, and the professional way you conduct business."
Kay Khadem, CCM, PMP, LEED ®AP
Senior Project Manager
Santa Monica-Malibu Unified School District
Kevin Huber
"Ninyo & Moore’s consultants have been efficient and extremely responsive and have demonstrated excellent communication skills and quality of work. I am pleased with the value of Ninyo & Moore’s services and am happy to refer them to my associates and other entities in need of their services. We would highly recommend using Ninyo & Moore for any of their services…"
Kevin Huber
Executive Director
Cooperative Strategies

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