Sheet Metal & Air Conditioning Contractors’ National Association


Updated “Thermoset FRP Duct Construction Manual” available

Jul 06, 2017

Thermoset FRP Duct_168x225The second edition of SMACNA's “Thermoset FRP Duct Construction Manual” is now available. The 228-page book is an authoritative resource that design engineers, industrial engineering departments, pollution control authorities, FRP manufacturers, and installation contractors can rely upon for the proper selection, manufacture, and installation of FRP duct systems.

This American National Standard (ANSI/SMACNA 011-2017) contains language, tables, and details for the construction of hand lay-up, spray-up, and filament wound FRP ductwork from 30 inch wg negative pressure to 30 inch wg positive pressure. Round ductwork sizes are expanded to include up to 96 inches diameter. For rectangular ductwork, new duct stiffener tables are added for easier selection.

Recognizing the increased popularity of FRP ductwork, this expanded edition includes commercial/HVAC applications. Supporting this, an underground installation section is added as well as added language on testing and balancing, duct sealing, and duct leakage. Duct hangers and support information has been expanded and organized into a separate chapter which now includes: upper attachments, hanger selection tables, channel (strut) used as trapeze, riser support details, and more. Appendices cover extended hanger spacing, general information on safe handling of thermoset fiberglass reinforced plastic duct, and allowable FRP defects.

The “Thermoset FRP Duct Construction Manual,” 2nd edition, 2016, is available in both book and PDF formats. Subscriptions are also available. Order online at:

Member price is $23 for the book, $23 for the PDF, and $38 for the book/PDF combination. Discounted prices for architects, engineers, government, and code officials are $110 for the book, $110 for the PDF, and $182 for the two formats purchased together. Non-member list price for the book is $159 and $262 for the book/PDF combo.

The discounted price is available only to architectural and engineering firms and their employees provided they are not in the contracting business as well. (Government agencies, schools, and universities also qualify for the discount.)