John Duntemann, PE - Wiss Janney Elstner Associates

Wiss, Janney, Elstner Associates (WJE) was founded in 1956 on the principle that delivering better solutions requires a better understanding of the problem. The company is a firm of structural engineers, architects and materials scientists that provide practical and technically sound solutions to problems in existing structures. From the start, WJE has brought a hands-on technical approach, comprehensive testing capabilities and an enthusiasm for problem solving to each construction challenge. After a half-century of solving construction related problems, the company is proud of its contribution to the built world. Wiss, Janney, Elstner Associates is based in Northbrook, Ill., and has provided consulting and research services on more than 50,000 projects throughout the United States and abroad for public and private sector clients. The company has been in business since 1956.

The Structural Group is an award-winning structural engineering firm based in Deerfield, Illinois, with over 25 years of experience providing innovative and collaborative solutions for new construction and renovation restoration projects. They specialize in serving owners, architects, and contractors in various sectors including commercial, residential, educational, healthcare, hospitality, industrial, and institutional projects. With a focus on developing economical designs, The Structural Group works closely with their clients to deliver pragmatic and cutting-edge solutions. Their expertise and dedication to excellence have earned them a reputation as a trusted partner in the industry.Generated from the website

Leopold Consulting Ltd, based in Buffalo Grove, Illinois, is a professional design corporation specializing in structural and architectural engineering. Founded in 2003 by Scott Leopold, the firm focuses on investigating structures related to property damage and design failures, offering remedial design services for architectural and structural building components. With a strong background in civil engineering, Scott Leopold has been a licensed structural engineer since 1988, bringing extensive experience from his work in building design and construction phases during the 1980s and 1990s. The firm serves a diverse clientele, including architectural and engineering design firms, construction contractors, insurance companies, and attorneys, addressing critical issues related to life safety and construction safety. Generated from the website