Rectangular Industrial Duct Construction Standards, 3rd Edition: 45-Day Public Review

The 45-Day Public Review draft of the SMACNA Rectangular Industrial Duct Construction Standards, I-P Version, 3rd Edition, is available.

The 45-Day Public Review draft of the SMACNA Rectangular Industrial Duct Construction Standards, I-P Version, 3rd Edition, is available. This 3rd Edition includes many of the same assumptions as the first and second edition, with a number of features indicated below:

  • Carbon and coated steel, stainless steel and aluminum include expanded panel pressure capacity tables and panel pressure capacity tables for reinforcements to accommodate larger ducts with panel widths to 16.0 feet wide.
  • To allow for added duct construction options, 2.5 ft stiffener spacing added to carbon and coated steel, stainless steel, and aluminum panel pressure capacity tables and panel pressure capacity tables for reinforcements.
  • Stainless steel panel pressure capacity tables added for Class 2, 3 and 4 applications
  • In addition to design capabilities for stainless steel operating at 120 °F, 350 °F and 800 °F, this third edition adds 500 °F.

To request a copy of the draft, please complete this form.

Single copy price: N/A

Comment Deadline: June 2, 2022