330 North Wabash is a 51-story, steel-framed office building originally constructed in 1972. The exterior wall is an aluminum and fixed glass curtain wall system, comprised of a grid of extruded aluminum mullions with a dark bronze anodized finish.
Scope of Services
CDC and its processor firm have been providing exterior wall consulting services to 330 North Wabash since 1993, including a three-year exterior restoration project consisting of sealant replacement at the tower curtain wall system (floors 2-50/roof), cleaning of all exterior aluminum at the curtain wall system, and limited repair of original construction damage at exterior metal surfaces. CDC has continued to provide 330 North Wabash's Owners with ongoing exterior consultation, including "hands-on" bi-annual evaluation of the condition of the curtain wall system, including glass, glazing, and sealant systems. CDC also provided consulting services, including the development of Construction Documents, writing of specifications, observation of mock-up testing, and site observations for the glass replacement work that took place in 2011-2013.
Prime Group Realty Services
Miles van der Rohe
Date of Completion