Two of the biggest names in engineering, Weidlinger and Thornton Tomasetti, have joined forces

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The merger of Weidlinger Associates and Thornton Tomasetti has been completed. Pictured are (from left) Tom Scarangello, chairman & CEO, and Ray Daddazio and Bob DeScenza, co-presidents. Photo by Bess Adler.

The merger of Weidlinger Associates and Thornton Tomasetti has been completed. Pictured are (from left) Tom Scarangello, chairman & CEO, and Ray Daddazio and Bob DeScenza, co-presidents. (Bess Adler)

Two of the world’s most respected engineering firms, Thornton Tomasetti and Weidlinger Associates, have merged.

Operating under the Thornton Tomasetti name, the deal means that the firm will now offer 10 practices offering a “broader range” of service to its clients as well as employing 1,200 staff and operating in 34 cities across the globe.

The 10 practices will include:

  • Forensics
  • Renewal
  • Weidlinger Applied Science
  • Property Loss Consulting
  • Structural Engineering
  • Construction Engineering
  • Weidlinger Protective Design
  • Facade Engineering
  • Weidlinger Transportation
  • Sustainability

The Weidlinger name was kept in some services due to industry reputation.

The firm will remain headquartered in New York City, with offices at the current 51 Madison Avenue and 40 Wall Street locations.

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