CHANTILLY, Va. - The American National Standards Institute (ANSI) announced that the Sheet Metal and Air Conditioning Contractors' National Association's (SMACNA's) "Round Industrial Duct Construction Standards," second edition, has been approved as an American National Standard.

According to the association, ANSI recognition increases the potential that SMACNA's standards are internationally adopted for industry and regulatory use. The approval is also expected to encourage wider domestic use of SMACNA's standard by state- and local-code governing bodies as well as the design and engineering community.

The 642-page "Round Industrial Duct Construction Standards" offers a standardized, engineered basis for design and construction of industrial ducts of Classes 1 to 5. It includes a spiral duct chapter for Classes 1 and 2 and covers design pressures ranging from 30 inches water gauge negative to 50 inches water gauge positive, plus carbon and galvanized steel tables. Also included are expanded tables for stainless steel and aluminum, plus expanded tables for duct sizes up to 96 inches in diameter, introduction of a new Duct Class 5 for systems handling corrosives, and spiral lockseam pipe. As alternatives to using tables, the publication has a manual calculation procedure using equations and fully developed examples, and offers optional calculation software.

SMACNA members may purchase the "Round Industrial Duct Construction Standards," second edition, at the member price of $64 for the book, $77 for the CD-ROM, and $64 for the PDF download. Architects and engineers may purchase the publication at the discounted price of $177 for the book, $212 for the CD-ROM, and $177 for the PDF download. The list price for the book is $246, $295 for the CD-ROM, and $246 for the PDF download.

To order, call SMACNA's Publications Department at 703-803-2989 or visit www.smacna.org/bookstore/.

Publication date: 11/17/2003