Brent Gabby, P.E., is a senior principal at national engineering firm Simpson Gumpertz & Heger Inc. (SGH). He is a professional structural engineer with more than 20 yrs of experience in building investigation, design, repair, and mediation support. He has performed building investigations, designs, and repairs on museums, educational facilities, and public and religious structures. Brent has authored dozens of articles, including “Monitoring and Repair of the Milwaukee City Hall Masonry Tower,” the Most Outstanding Paper of the Year, 2008 to 2009, ASCE Journal of Performance of Constructed Facilities, July/August 2008. He has been a guest lecturer at the University of Texas at Austin, Massachusetts Institute of Technology, and Northeastern University. He has lectured for associations such as the International Concrete Repair Institute, the Association of Preservation Technology, and the American Arbitration Association.