Thornton Tomasetti optimizes the design and performance of structures, materials and systems for projects of every size and level of complexity. An employee-owned organization of engineers, scientists, architects and other professionals collaborating from offices worldwide, we support clients by drawing on the diverse expertise of our integrated practices. We are committed to being a sustainable and enduring organization and the global driver of innovation in our industry.

Thornton Tomasetti’s Philadelphia office, established in 2001, has successfully delivered various projects including commercial, office, healthcare, laboratory and research, industrial, educational, cultural, residential, sports and transportation.

Mark A. Coggin, P.E., LEED AP is the Senior Principal and Philadelphia Office Director.