Who is ctl group? We are an internationally recognized engineering, architecture, and materials science consulting and testing firm. Throughout the life-cycle of structures and infrastructure, CTLGroup experts evaluate the cause of problems, implement strategies to manage performance, and develop integrated solutions to resolve technical challenges.What is ctctl group? CTLGroup is an internationally recognized expert consulting engineering and materials science firm, providing engineering, architecture, and scientific testing to our clients across the globe. Our engineering expertise is complemented by one of the largest and most comprehensive ...Will changes to my profile be saved in ctlgroup? Changes wont be saved until you sign up for an Enhanced Profile subscription. CTLGroup is an internationally recognized expert consulting engineering and materials science firm, providing engineering, architecture, and scientific testing to our clients across the globe.Who is ctl engineers construction technology consultants? Services for clients in New York, Michigan, and North Carolina are provided through CTL Engineers & Construction Technology Consultants. CTLGroup began in 1916 as the research and development laboratory for the Portland Cement Association (PCA), which had recently moved to Chicago.