Thornton Tomasetti

Thornton Tomasetti (formerly The Thornton-Tomasetti Group, Thornton Tomasetti Engineers, LZA Technology) is a 700+ person structural engineering consulting firm headquartered in New York City. Founded in 1956 as Lev Zetlin & Associates, the 50-year old company has office locations throughout the world.

With practices in building structure, building skin, building performance, construction support services and property loss consulting, Thornton Tomasetti addresses the full life cycle of a structure. The engineering firm provided the structural design for several of the world's tallest building structures, including the Petronas Towers in Kuala Lumpur, Malaysia and Taipei 101 in Taiwan. Other recognizable structures designed by the firm include Soldier Field in Chicago, PETCO Park in San Diego, and the Minneapolis Public Library in Minneapolis. Thornton Tomasetti has collaborated with several high profile architects including Cesar Pelli, Santiago Calatrava, Renzo Piano, and Rafael Vinoly.

Thornton Tomasetti is also committed to advancing sustainable design and construction practices. Approximately one third of Thornton Tomasetti’s staff are LEED accredited professionals (LEED AP). Thornton Tomasetti was also the first structural engineering company to sign the AIA 2030 Commitment.