More than 3,000 affiliated architects, engineers, contractors, manufacturers and others with an interest in building enclosures participate in Building Enclosure Councils (BECs) around the country.

The Councils promote the exchange of information and encourage discussion on matters concerning building enclosures and related science, such as training, education, technology transfer, weather conditions and local issues and cases.

The Building Enclosure Technology and Environment Council (BETEC) of the National Institute of Building Sciences and the American Institute of Architects signed an agreement to establish the BEC initiative on May 18, 2004.

Their initial goal was to have local AIA components establish at least nine BECs by May of 2007. Since then, the program has founded 26 chapters, representing both cities and states. There are currently BEC Chapters in:

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