Bob Harris is senior -principal engineer at Structural Services Inc. Known worldwide in the decorative concrete industry, Harris has presented at the World of Concrete for more than 20 years and has conducted training sessions around the world. Harris is the author of several books on decorative concrete and articles for Concrete Network, Concrete Decor and Concrete Construction magazines. Harris was among the first to be inducted into the Decorative Concrete Hall of Fame in 2010 in recognition of his achievements, commitment to excellence and innovations that have helped grow the decorative concrete industry. Harris is a member of the Decorative Concrete Council and the Concrete Polishing Council of the American Society of Concrete Contractors.