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.

Year Founded
1949
Offices Worldwide
40+
Projects
90,000+
Countries Worked In
150+
Languages Spoken
50+
LEED Professionals
215+
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.
Our Work
We are conquering complex problems - on six continents - and finding better ways to tackle even the most straightforward undertakings.
Recent News & Insight
EVs and Parking Design in the Latest Issue of Parking Today
July 11, 2025
As more electric vehicles take to the road, parking structures must evolve to accommodate them. Thornton Tomasetti Principal Todd Neal writes about safety, accessibility, increased vehicle weight and other challenges impacting facility design in the latest issue of Parking Today.
Principal Michael Wesolowsky Talks Venue Acoustics on Moore in the Morning
July 10, 2025
On the Moore in the Morning podcast, Principal Michael Wesolowsky explained how vibrations are natural for venues and, if properly designed, can safely accommodate fans dancing and enjoying the show.
What England's Building Safety Act Means for Forensic Engineers and Insurers
July 07, 2025
The Building Safety Act (BSA) 2022, which came into force on 28 June 2022, represents a significant legislative shift in England’s approach to building safety and risk management.
Factory of the Future Tops Out in Maine
July 01, 2025
An innovative mass-timber research facility at the University of Maine will embody the goals of its Green Energy & Materials (GEM) initiative.
Neutral Edison Breaks Ground in Milwaukee
June 26, 2025
On track to become the tallest mass timber building in North America, the 31-story residential tower is pursuing both Passive House and Living Building Challenge Core certifications.