Steve Freihon/Related-Oxford
New York, New York
Here's How
We apply scientific and engineering principles to solve the world’s challenges — starting with yours. Whether we’re focusing on the design, construction and performance of buildings or expanding into new disciplines, we never limit ourselves, applying our expertise to all types of projects across a range of industries.
1949
Year Founded
40+
Offices Worldwide
7,000+
Active Projects
150+
Countries Worked In
50+
Languages Spoken
215+
LEED Professionals
What We Do
Whatever issue you face, we have your solution. We get to the heart of every problem—digging deep to understand its intricacies and nuances, so we can help you achieve your goals, together.
Flood Resilience
We go beyond building-code compliance to protect your assets from current and future flood risks.
Venue Concert & Event Rigging
We're the leading industry expert in rigging engineering and structural load evaluation services for touring concerts, shows and special events.
Envelope Renewal
From hands-on investigation and analysis to repair or restoration for any material or building type, we can help you meet all your building enclosure renewal needs.
Deconstruction Engineering
Our 60+ years of experience in design and forensics combines with unequaled expertise in modeling and simulation to reengineer the demolition process.
Hydrogen Engineering
From risk assessment and advanced modelling to energy storage and supply, we work across the hydrogen spectrum to support your structural, safety, regulatory and resilience priorities.
Embodied Carbon
We help you make decisions that reduce the life-cycle impact of building materials on climate change – without compromising performance or cost.
Our Work
We are conquering complex problems - on six continents - and finding better ways to tackle even the most straightforward undertakings.
Courtesy Gensler
Courtesy Gensler
Courtesy Foster + Partners
Courtesy Gensler
Thornton Tomasetti
Recent News & Insights
600 Fifth Featured in Modern Steel Construction
January 30, 2026
Thornton Tomasetti’s renovation of 600 Fifth Street shows how strategic steel integration enabled major structural transformation within an existing building.
Fatigue Prediction for Welded Structures
January 29, 2026
Accurately predicting weld fatigue requires more than conventional assumptions. Learn how advanced, stress-based fatigue analysis improves failure location prediction and fatigue life estimates for complex welded structures under real-world loading.
City of London Planning for Sustainability SPD
January 28, 2026
The City of London Corporation has adopted its Planning for Sustainability SPD, making whole life-cycle carbon, retrofit-first strategies, circular economy principles, and climate resilience enforceable planning requirements. Here’s what developers and design teams need to know to stay compliant and avoid planning risk.
Netflix’s "Skyscraper Live" Spotlights Taipei 101
January 23, 2026
As climber Alex Honnold ascends Taipei 101 live on Netflix, the tower’s seismic-resilient structural design takes center stage.
Integrated Nondestructive Testing for Aging Infrastructure
January 20, 2026
Learn how integrating GPR and ultrasonic testing improves nondestructive evaluation of aging infrastructure beyond single-method NDT.