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Addressing the Challenges of Climate Change

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.

Thornton Tomasetti
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. 

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 & Insight

An Update on RAAC in the UK
July 24, 2025
Reinforced Autoclaved Aerated Concrete (RAAC), a lightweight construction material from the mid-1900s, is prone to structural failures due to its limited 30-year lifespan and manufacturing inconsistencies. This article highlights recent safety concerns, such as hidden defects in public buildings, and outlines current research, AI-assisted defect detection and remediation strategies to manage RAAC risks in aging infrastructure.