Since 1968, Krull Construction Co. Inc. has been specializing in general contracting with a concrete/excavation division. Based in Ann Arbor, Mich., the company is an authorized Ceco building systems dealer. It handles a number of concrete projects, including concrete foundations, walls and columns, interior slab on grade, interior elevated slab on deck and site concrete. The company offers metal building construction as building option that serves a wide range of uses, including commercial, recreational, educational, institutional and industrial.