Weidlinger Associates
Thornton Tomasetti is a global engineering consulting firm delivering structural design, forensics, protective design, decarbonization, and infrastructure services across 40+ offices and 150+ countries to developers, governments, defense clients, and cultural institutions.
- Company typePrivate
- Founded1949
- HeadquartersNew York, United States
- Headcount251–500
- GTM typeB2B
- OfferingServices
What Weidlinger Associates does
Thornton Tomasetti is a privately held global engineering consulting firm founded in 1949 and headquartered in New York. The firm delivers structural design, forensics and investigations, protective design and security, restoration, decarbonization, façades, transportation/infrastructure, and specialty disciplines across more than 25 capability areas, serving developers, governments, sports and entertainment clients, defense organizations, and cultural institutions. Notable mandates include 10 Hudson Yards (New York), Battersea Power Station (London), the Jeddah Tower (Saudi Arabia), The Arena in Diriyah (Riyadh), Australian Defence Capabilities, and FIFA World Cup 2026 stadiums, with active projects across 150+ countries and 40+ offices on six continents.
The firm's underlying technology stack centers on its CORE Studio Innovation Engine, an internal R&D division that runs CORE groups for incremental and frontier engineering research. Proprietary technical capabilities highlighted in the source include advanced Computational Fluid Dynamics (CFD) simulation for stadium aerodynamics, flood resilience, and urban planning, as well as a Whole Life-Cycle Carbon Assessment methodology covering construction, use, demolition, and disposal phases of buildings. The firm holds 215+ LEED-accredited professionals and supports a multilingual team spanning 50+ languages. Distribution is direct-to-client via project-based consulting engagements, expert witness services, and a "Find an Expert" portal, with thought leadership delivered through an Insights/News section, podcast series, and broad social media presence.
Commercially, the firm operates a quote-based, project-scoped professional services model typical of engineering consultancies, with no publicly disclosed pricing. Revenue, ownership, and funding information are not disclosed in the source data. Note: the original query referenced Weidlinger Associates; the provided source material pertains entirely to Thornton Tomasetti, the surviving entity following the 2015 Weidlinger/Tornton Tomasetti merger, and no Weidlinger-specific data is present.
Weidlinger Associates firmographics
Firmographics- Name
- Weidlinger Associates
- Legal name
- Thornton Tomasetti
- Website
- https://wai.com
- Company type
- Private
- Founded year
- 1949
- Operating status
- Operating
- Headcount range
- 251–500 employees
- Short description
- Thornton Tomasetti is a global engineering consulting firm delivering structural design, forensics, protective design, decarbonization, and infrastructure services across 40+ offices and 150+ countries to developers, governments, defense clients, and cultural institutions.
- Ownership category
- akta.pro rank
Weidlinger Associates industry classification
Industry- Product category
- Engineering Consulting Services
- NAICS
- Engineering Services (541330), Architectural, Engineering, and Related Services (5413), Engineering Services (54133)
- SIC
- Services-Engineering Services (8711), Services-Engineering, Accounting, Research, Management (8700)
- akta.pro primary industry
- Civil & Structural Engineering Consulting (BPAHAIAA)
- akta.pro secondary industries
- Sustainable/Green Building & LEED Consulting (BPAHAKAG), Sustainability & ESG Consulting (BPAHACAK)
Keywords
Where Weidlinger Associates is headquartered
LocationHeadquarters
- HQ city
- New York
- HQ country
- United States
- HQ region
- North America
Markets served
Weidlinger Associates business model
Business model- GTM type
- B2B
- Offering type
- Services
- Cost components
- Personnel, Operations, Technology or R&D, Marketing or Sales, Infrastructure
Distribution channels1 record
Marketing channels7 records
Weidlinger Associates product offering
Product offeringCore offering
Weidlinger Associates (now operating under Thornton Tomasetti) is an engineering consulting firm that delivers structural design, construction engineering, forensics and investigations, protective design and security, restoration and renewal, decarbonization, and resilience services for buildings and infrastructure. The firm serves enterprise, government, and institutional clients across more than 25 capability areas, supported by a global R&D function (CORE Studio) that develops advanced simulation tools such as computational fluid dynamics and whole life-cycle carbon assessment.
Differentiator
Problem solved
Functional benefit
Products and services
- Structural Design Structural engineering design services for buildings and infrastructure projects of varying sizes and complexity, including megatall and supertall structures.
- Forensics & Investigations Forensic engineering investigations and expert witness services for building failures, structural incidents, and industrial forensics matters.
- Protective Design & Security Engineering services focused on protective design and security for government, defense, and critical infrastructure projects, including preparation for government classified work.
- Restoration & Renewal Engineering services for the restoration and adaptive reuse of existing buildings, including landmark restoration projects such as Battersea Power Station.
- Construction Engineering Construction engineering services supporting building delivery, including construction-stage engineering support and project execution.
- Decarbonization & Sustainability Engineering consulting for decarbonization and sustainability, including whole life-cycle carbon assessment across construction, use, demolition, and disposal phases.
- Façades Engineering Engineering services for building façade design, performance, and enclosure systems.
- Resilience Consulting Engineering services for resilience and flood resilience across urban planning and infrastructure projects, leveraging CFD simulation capabilities.
- Megatall & Supertall Buildings Engineering Specialized structural engineering for megatall and supertall building projects, including work on the Jeddah Tower, set to become the world's tallest building.
- Defense Engineering Engineering services for defense applications, including Australian defence capabilities involving shock testing and related structural work.
- Industrial Forensics Forensic investigation services focused on industrial facilities, equipment failures, and infrastructure incidents.
- Transportation/Infrastructure Engineering Engineering services for transportation and infrastructure projects spanning structural and performance design.
- Aviation Engineering Engineering services for aviation facilities, including structural and performance engineering for airport-related projects.
- Critical Facilities Engineering Engineering services for critical facilities such as data centers, laboratories, and other high-reliability buildings.
- Acoustics, Noise & Vibration Acoustics, noise, and vibration engineering services for buildings and specialized facilities.
- Sports & Public Assembly Engineering Engineering services for sports venues and public assembly facilities, including CFD-based stadium engineering.
- Cultural & Community Engineering Engineering services for cultural and community buildings such as museums, performing arts centers, and civic facilities.
- Healthcare Engineering Structural and performance engineering services for healthcare facilities and hospitals.
- Education Engineering Engineering services for educational facilities including K-12 schools and higher education campuses.
- Government Engineering Engineering services for government projects, including classified work preparation involving personnel security vetting and facility readiness.
- Energy Engineering Engineering services for energy sector projects and energy-related infrastructure.
- Hospitality & Gaming Engineering Engineering services for hospitality and gaming facilities, including hotels, resorts, and casino developments.
- Insurance Engineering Engineering services supporting insurance matters, including forensic investigations and risk-related assessments.
- Residential Engineering Engineering services for residential buildings and multi-family housing developments.
- Commercial Engineering Engineering services for commercial buildings such as offices, retail, and mixed-use developments.
- Special Structures Engineering services for special and non-standard structures requiring customized structural solutions.
- Laboratory & Research Engineering Engineering services for laboratory and research facilities, including vibration-sensitive and high-performance environments.
- CORE Studio Innovation Engine R&D and technology division managing internal research and development efforts, from incremental efficiency improvements to solving challenging engineering problems, including CORE groups and collaborative innovation outputs.
- Expert Witness Services Find-an-Expert-Witness service providing specialized engineering experts for legal and insurance matters.
Quantifiable outcome
- Active projects: 7,000+
- +2 more outcomes
Companies that use Weidlinger Associates
Customer profileIdeal customer profiles3 records
Weidlinger Associates technology and API
TechnologyTechnology focussed No
API detail
- API docs
- API detail
Core technology
AI maturity
App detail
Feature3 records
Weidlinger Associates partnerships and signals
Strategic signalRecent moves5 records
Expansion highlights5 records
Weidlinger Associates competitors and assessment
Company assessmentDirect peers
- Simpson Gumpertz & Heger: Structural engineering and building technology consultancy with deep expertise in forensics, restoration, and failure investigation. Closely comparable niche specialization in structural/forensics work.
- Buro Happold: International engineering consultancy specializing in structural engineering, MEP, sustainability, and facade engineering. Highly comparable in building-focused, design-led engineering with similar mega-project exposure and a global office network.
- Arup: Global multidisciplinary engineering design firm with deep structural, building services, and sustainability practices. Closest direct competitor on megatall buildings, complex facades, and integrated design engineering for landmark projects worldwide.
- Walter P Moore: Structural engineering and diagnostics firm with strong sports, civic, and healthcare building practices. Direct peer in structural design and forensics with comparable mid-sized professional services model.
Broad incumbents
- AECOM: Large diversified infrastructure consulting firm with significant buildings and structural engineering practices. Overlaps on complex building design and program management but is much broader and includes large construction services.
- WSP: Global professional services firm with a large engineering consultancy offering spanning buildings, transportation, and environment. Overlaps with Weidlinger on building and infrastructure design but operates at much greater scale across many other sectors.
- Stantec: International engineering, architecture, and environmental consulting firm with building engineering and infrastructure practices. Overlaps with the subject firm on structural and sustainability advisory but is significantly larger and broader.
- Arcadis: Global design and consultancy firm with sustainability, buildings, and resilience practices. Comparable in resilience/sustainability advisory for the built environment, but operates at greater scale and breadth.
- Jacobs Solutions: Global professional services firm covering critical infrastructure, advanced facilities, and life sciences. Comparable on complex building and mission-critical engineering but with a much broader, more diversified portfolio.
Regional players
- Burns & McDonnell: US-headquartered engineering, architecture, and consulting firm with strong critical infrastructure, energy, and federal practices. Comparable on defense/government work and complex engineering but is regionally concentrated in North America.
Market position
Strengths5 records
Weaknesses4 records
Competitive moat4 records
Key risks5 records
Key highlights6 records
Customer concentration
Weidlinger Associates social profiles
Digital presenceWeidlinger Associates financial estimates
Financial estimateRevenue estimate
Valuation estimate
Weidlinger Associates leadership team
Management profileNumber of profiles
Weidlinger Associates funding detail
Funding detailFunding overview
Funding rounds
Investors
Funding detail is available on the Subscription and Enterprise plan.Contact sales →
Weidlinger Associates M&A and investment
M&A and investmentM&A
Investments
M&A and investment is available on the Subscription and Enterprise plan.Contact sales →
Frequently asked questions about Weidlinger Associates
What does Weidlinger Associates do?
Weidlinger Associates (now operating under Thornton Tomasetti) is an engineering consulting firm that delivers structural design, construction engineering, forensics and investigations, protective design and security, restoration and renewal, decarbonization, and resilience services for buildings and infrastructure. The firm serves enterprise, government, and institutional clients across more than 25 capability areas, supported by a global R&D function (CORE Studio) that develops advanced simulation tools such as computational fluid dynamics and whole life-cycle carbon assessment.
Is Weidlinger Associates a public or private company?
Weidlinger Associates is a private company. It is classified as unknown and is currently operating.
When was Weidlinger Associates founded?
Weidlinger Associates was founded in 1949. It employs 251 to 500 people.
Where is Weidlinger Associates based?
Weidlinger Associates is headquartered in New York, United States, in the North America region.
Who are Weidlinger Associates's main competitors?
Direct peers on record are Simpson Gumpertz & Heger, Buro Happold, Arup and Walter P Moore. Broad incumbents are AECOM, WSP, Stantec, Arcadis and Jacobs Solutions. Burns & McDonnell is listed as a regional player.
What industry is Weidlinger Associates in?
Weidlinger Associates's product category is Engineering Consulting Services. Its primary akta.pro industry code is BPAHAIAA, Civil & Structural Engineering Consulting, with a secondary code of BPAHAKAG, Sustainable/Green Building & LEED Consulting. Its NAICS code is 541330 and its SIC code is 8711.