The original design of the Inland Steel Building included double-paned glass for better insulation.
Alexandra Lange writes, "Other features of the original building sound like they could have been specified yesterday. Graham moved the support piers to the perimeter-where they form striking stainless-steel ribs on the exterior of the building along South Dearborn Street-to create 58-by-178-foot open floors. He integrated electricity and telephone lines into the floor as part of a modular system called 'Inland Cellufloor,' which shares much in common with today's energy-efficient floor delivery systems."
