The SMACNA® Seismic Restraint Manual Guidelines for Mechanical Systems 4th Edition and Rectangular Industrial Duct Construction Standards 3rd Edition are now available for ANSI 45-day public review and comment.
Seismic Restraint Manual Guidelines for Mechanical Systems (45 Day Public Review)
This fourth edition of the Seismic Restraint Manual: Guidelines for Mechanical Systems has been updated to conform to the International Code Council for anchorage capacities.
All Seismic Reinforcement Brace (SRB) tables have been updated to provide users with more SRB options including the addition of new tables. Refreshed instructions for using the guidelines. Chapter 9 expansion anchor tables have been updated with new tables. New Appendix B to assist in determining the weight of the duct or pipe to be braced. Many new and updated details have been included to align with changes made throughout the document.
Click here to participate in the 45-day review for Seismic Restraint Manual Guidelines for Mechanical Systems.
Rectangular Industrial Duct Construction Standards (45 Day Public Review)
This third edition of the Rectangular Industrial Duct Construction Standards includes many of the same assumptions as the first and second edition with a number of added features.
Expanded panel pressure capacity tables and stiffener spacing options for carbon and coated steel, stainless steel and aluminum to accommodate larger ducts and allow for added duct construction options. Stainless steel panel pressure capacity tables added for Class 2, 3 and 4 applications with additional stainless steel operating temperature design capabilities. Laboratory testing, physical testing and data analysis on rectangular duct was completed to further evaluate side wall shear capacities of local buckling to those already introduced in the first and second edition.
Apr 1, 2025 — Member Update
Dec 17, 2025 - Director of Operations at Ernest D. Menold, Inc., discusses how to integrate software solutions into the shop floor and what SMACNA members need to be mindful of when selecting a suite that suits their needs.
Dec 17, 2025 - Project Manager with Western Sheet Metal talks about embracing new technology and emerging best practices within a sheet metal shop and how to successfully leverage data in the shop.
Dec 17, 2025 - For the fourth consecutive year, SMACNA’s Executive Director of Government and Political Affairs recognized by The Hill newspaper.