Harrison-Hamnett, P.C. Consulting Structural Engineers was established in 1989 to provide creative structural design services for clients with emphasis on service. Our vast experience includes the structural design for additions to existing buildings as well as new construction for educational and institutional facilities, commercial, industrial, municipal, religious and residential buildings. We also have an extensive background in the study of historic and older structures and the structural design and detailing for the restoration and renovation work needed for these projects.