"The new code represents the first comprehensive revisions to the building code in 70 years and will make construction in Chicago more affordable by expanding options to design and build with a wider range of materials and technologies. Though there have been several modifications to the Chicago Building Code over the years, the last comprehensive overhaul to the code was adopted in 1949. The code update approved by City Council moves Chicago closer to national standards in several significant areas, including building planning, fire and life safety, enclosures and materials, structural, small residential, and rehabilitation of existing buildings." Read the full article in the link below...
Chicago City Council approves major building code modernization - ICC
Chicago City Council approves major building code modernization - ICC