The basics: The 8,375-square-foot, $1.4 million expanded entry lobby enclosure to the 200 W. Madison office building in Chicago features all-glass walls and an all-glass roof. Completed in November 2005.
The players: Architect, Powell/Kleinschmidt, Chicago; contract glazier, Harmon Inc., Eden Prairie, Minn.; glass supplier, Viracon, Owatonna, Minn.; system supplier, Novum Structures LLC, Menomonee Falls, Wis.
The glass and systems: PSG-System, ASG-System, AES-System with 50 low-iron, laminated glass panels for the wall and 70 low-iron, laminated and insulating units for the skylight glass. All glass has a low-emissivity coating on the No. 2 surface, with a custom frit pattern used for shading on the No. 3 surface.