John Gajda, PE, PEng, FACI
Senior Principal Engineer, CTLGroup

John Gajda is a Senior Principal Engineer at CTLGroup in Skokie, IL and is a licensed professional engineer in 27 states.  John is also licensed in 4 Canadian provinces, and is a fellow of the American Concrete Institute.
CTLGroup is a world renowned consulting firm specializing in cement and concrete, and is also former R&D lab of the Portland Cement Association
John is the former chairman of the American Concrete Institue’s ACI 207 committee on “Mass and Thermally Controlled Concrete”, chairman of the ACI 301 subcommittee responsible for specification requirements for “mass concrete.  He has published over a dozen papers and publications on mass concrete for various industry journals and associations. 
Over the past 25 years, John worked on more than 800 mass concrete projects across North America and throughout the world, most of which are in the USA. 
Some of the more notable projects include: World Trade Center reconstruction project in New York City, TappanZee Bridge in New York, the Ohio River Crossing in Louisville, the San Francisco – Oakland Bay Bridge, I-35 Minnesota Replacement Bridge in Minneapolis, and the Wilshire Grand Hotel in Los Angeles where 21,000 cubic yards of concrete was placed in 21 hours.