Under the umbrella of Emporis, II in One Contractors is a Chicago general contractor that specializes in concrete, earth work and reinforcing steel. The company is also a builder of high-rises and is well known to companies and organizations around the world. Its clients include both large-scale and medium-sized businesses that operate in the financial, real estate, construction, architectural, engineering or supplying markets. Some of the larger projects completed by II In One include Chicago s reservoir construction, the maintenance for Chicago s O Hare International Airport and the completion of Chicago s Wacker Drive post- tensioning project.