Papers & Guidelines

SMACNA Technical Papers and Guidelines review processes, specifications and requirements in various documents and standards, providing reviews, recommendations, clarifications and some useful tips for contractors. 

All papers and guidelines are copyrighted by SMACNA and SMACNA grants members single user permission to download and use. Any other use or distribution require SMACNA’s permission.

Technical Resources Apr 27 2021

EPA Signs SNAP Rule 23

On April 23, the U.S. Environmental Protection Agency (EPA) signed the Significant New Alternatives Policy (SNAP) Rule 23 - New listings for refrigeration and air conditioning; revised listing for fire suppression.

Technical Resources Apr 22 2021

Rooftop Ductwork – Round or Rectangular?

This technical resources bulletin discusses the differences between round and rectangular duct types, and factors to consider when choosing the appropriate duct type for rooftop ductwork applications.  

Technical Resources Jan 01 2021

ICC/International Code Adoption

This file is an updated (2021)  International Code Council (ICC) State Adoption of the I-Codes.

Technical Resources Sep 17 2020

HVAC COVID-19 Guidance

This technical resource bulletin includes SMACNA’s recommended Guidelines to open existing buildings with more specific emphasis on the building’s HVAC System.

Technical Resources Oct 18 2019

Hanger Straps Embedded in Concrete

The SMACNA Testing and Research Institute (STRI) completed load tests on three different combinations of strap embedded in concrete.

Technical Resources Jul 31 2018

Soldering Copper Flat Lock Roof Seams

This study tests the use of 1/2 inch wide flat lock seam soldered joints. The industry’s current recommended widths are 5/8-inch-wide flat lock seams (Architectural Sheet Metal Manual by SMACNA) and 3/4-inch-wide flat lock seams (Copper and Common Sense by Revere Copper).

Technical Resources Feb 16 2017

2017 Update for Architectural Fascia and Coping Wind Tests Report

SMACNA’s Technical Resources Committee completed wind uplift testing on custom-fabricated fascia and coping architectural elements constructed in accordance with the SMACNA Architectural Sheet Metal Manual.

Technical Resources Jan 12 2014

Effects of Imposing a Universal Requirement of (G-60, G-90) Coating on All Components of Ductwork

This technical paper reviews the HVAC Duct Construction Standards, 2nd edition, 1995, specifications and requirements for zinc coating on galvanized steel ducts.

Technical Resources Jul 01 2002

Test Standards for Fire, Smoke and Combination Fire/Smoke Dampers

On July 1, 2002, damper manufacturers were required to provide fire, smoke and combination fire/smoke dampers that are tested to new Underwriters Laboratories (UL) testing requirements.

Technical Resources Jul 01 2001


The “SMACNA CAD Standard,” second edition, 2001, articulates in greater detail the CAD standards that will enable members of the AEC community to apply CAD effectively to mechanical, fire protection, and plumbing design and construction.

Technical Resources Jan 12 2001

Custom Fabricated Sheet Metal Test Report

SMACNA's Custom Fabricated Sheet Metal Roof Test Report describes the performance of the double lock standing seam and batten seam metal roof conforming to the SMACNA Architectural Sheet Metal Manual.

Technical Resources Jan 01 2000

Duct Cleanliness for New Construction Guidelines

This guideline is intended to help the commercial duct installation contractor, design engineers and building owners to become more familiar with guidelines to control and reduce contamination.

Technical Resources Jan 01 2000

Improper Fire Damper Installation

SMACNA is increasingly advised that contractors are being required to provide elements of fire damper and combination fire/smoke damper installations which are both unnecessary and not allowed.

Technical Resources

Technical Guideline on Through Penetration Firestopping

This paper was prepared in response to increasing concerns and lack of understanding of this issue by designers, code officials and contractors.