2010 Small Business of the Year Columbia Chamber of Commerce THHinc is an engineering firm specializing in the design of buildings, site development, municipal infrastructure, subdivision and land planning, and surveying. ------ Merged with McClure Engineering Co in June 2015 ------ We provide 'quality technical solutions and personal service' We work with a varied client base – large, small – local and national – architects, contractors, developers, and other engineers. Our clients have one thing in common – they tell us that they appreciate our solution oriented approach – meeting budgets and schedules – and that we are good team players. Our work directly with contractors is a direct benefit to YOU – it sets us apart from most engineers in that we design solutions that are buildable rather than having text book solutions. This approach minimizes construction delays and saves you money.