Sheet metal & Air Conditioning Contractors’ National Association

Technical Resources

Overview

Technical standards and manuals developed by SMACNA members have worldwide acceptance by the construction and code community, as well as local and national government agencies. ANSI, the American National Standards Institute, has accredited SMACNA as a standards-setting organization. SMACNA standards and manuals address all facets of the sheet metal and HVAC industry – including duct construction and installation, indoor air quality, energy recovery, roofing and architectural sheet metal, welding, and commissioning.

Technical Inquiry

SMACNA develops and publishes more than 30 technical documents with more being added to the library each year and several in review and revision cycles. In accordance with SMACNA Policy, a formal interpretation of the literal text of SMACNA's technical manuals, guides or standards is available but only on the basis of written request or inquiry. The request must pertain to a specifically identified portion of a SMACNA technical document that does not involve published text which already provides the requested information. In considering such requests, SMACNA will not review or judge products or components as being in compliance with the document or publication.

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Technical Papers/Guidelines

These papers are copyrighted by SMACNA. SMACNA grants single user permission to download and use. Any further use in part or in whole requires permission.

Read our technical papers and guidelines

Resources

  • News SMACNA introduces first ‘Phenolic Duct Construction Standard’

    SMACNA’s first edition of the “Phenolic Duct Construction Standard” provides basic phenolic duct fabrication and installation standards that sheet metal contractors, code officials and design engineers will find useful. It is a new American National Standard.

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  • News SMACNA's New Architectural Manual offers quality assurance methods

    SMACNA’s new “Architectural Sheet Metal Quality Assurance Guide,” 1st edition, is a tool for evaluating exterior sheet metal building components—roofing systems, exterior walls, flashing, copings, etc.—during initial construction and for ongoing condition assessments and maintenance. SMACNA teamed up with RCI, an international association of professional building envelope consultants, to write this book.

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  • News Introducing SMACNA’s Round Industrial Duct Construction App

    Now there’s an app for SMACNA’s “Round Industrial Duct Construction Standard” (RIDCS). This powerful app, available today, is actually Web-based. Best of all it is free to SMACNA members. Click here to access the App. Scroll to “SMACNA’s Round Duct Construction App.” Login to your member’s only account and you will automatically arrive on the App landing page.

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  • News Members receive latest edition, free − SMACNA “Energy Systems Analysis and Management Manual” available

    With the long-term rising cost of fossil fuels, reducing the energy consumption of HVAC systems is increasingly important.

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  • Technical Paper Effects of Imposing a Universal Requirement 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. Paragraph and page references from the HVAC-DCS manual are provided along with the text. Commentary in the form of italicized text has been added to clarify the meaning, scope or intent of the manual. In addition the paper reviews zinc coating thickness variations, as commonly used in trade practice, for sheet, reinforcements, tie rods and fasteners. Also included in the paper are the burdensome effects of imposing a universal requirement of G-60 and/or G-90 coating for all components. Wide distribution of this technical paper in the construction community is encouraged.

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  • Technical Paper Custom Fabricated Sheet Metal Test Report

    Achieving uniqueness in building construction should start at the top. When choosing a roofing style, many architects choose custom fabricated metal roofs. 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. Members are encouraged to provide copies of this paper to building owners and architects, so that all parties gain a better understanding as to the performance of custom metal roofing.

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  • Technical Paper ICC/International Code Adoption

    This file is an updated (2012) International Code Council (ICC) State Adoption of the I-Codes. SMACNA National has long been involved in the code setting process to ensure that the SMACNA Standards currently being utilized would be included into the Model Building Codes. SMACNA will continue our work with the Model Building Codes and provide future updates concerning code adoptions.

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  • Technical Paper Air Duct Leakage HVAC 2011 Technical Paper

    SMACNA published the HVAC Air Duct Leakage Test Manual in conjunction with the SMACNA HVAC Duct Construction Standards. Research proved that duct leakage could be well defined as a function of the static pressure and the surface area of the duct. This allowed for the introduction of leakage classes that could be used to calculate and accurately represent the leakage of air from ducts of various sizes and configurations.

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  • On Demand Webinar NEMI presents: HVAC Fire Life Safety Certification webinar

    SMACNA and the National Energy Management Institute (NEMI) are presenting a webinar on the NEMI HVAC Fire Life Safety certifications exclusively for SMACNA members only on Jan. 26 at 11:00 a.m. (EST).

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  • On Demand Webinar HVAC Duct Construction Standards 103 - Round and Oval Duct, Hangers, and Casing Construction

    Event Objectives Gain solid understanding of how to construct duct in a resource efficient and sustainable manner that is compliant with SMACNA’s HVAC Duct Construction Standard. This is the final session in a three part series.

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  • On Demand Webinar HVAC Duct Construction Standards 102 - Rectangular Duct Tie Rods, New Tables (TDC/TDF), and Rectangular Duct Over 120'

    Event Objectives Gain solid understanding of how to construct duct in a resource efficient and sustainable manner that is compliant with SMACNA’s HVAC Duct Construction Standard. This is the second session in a three part series.

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  • On Demand Webinar HVAC Duct Construction Standards 101 - Rectangular Duct External Reinforcement

    This presentation will cover the following (with respect to rectangular duct): - Basic definitions used to properly describe rectangular duct - Limits and proper application of various joints and seams - Use of the manual to determine proper construction options - and more

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  • On Demand Webinar SMACNA Fire, Smoke & Radiation Damper

    Session highlights the considerations in specifying and installing fire dampers, smoke dampers, combination fire and smoke dampers and ceiling dampers in HVAC systems.

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  • On Demand Webinar SMACNA Seismic Restraint Manual - Webinar

    Session highlights the SMACNA Seismic Restraint Manual – Guidelines For Mechanical Systems 3rd Edition (ANSI) means and methods for seismically bracing ducts and pipes to meet the requirements of the regionally appropriate seismic hazard levels so that ducts/pipes are more likely to maintain their integrity and remain attached to the building’s structure during a seismic event.

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  • On Demand Webinar HVAC Air Duct Leakage

    This webinar presentation on duct air leakage will define what duct air leakage is and how it relates to equipment air leakage, accessory air leakage, and HVAC system air leakage.

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  • Technical Paper HVAC Duct Sealant Usage Requirements on USGBC LEED® Projects - UPDATE

    The following bulletin is an update to TRB #4-09 issued March 27, 2009 with the Subject: HVAC Duct Sealant Usage Requirements on USGBC LEED® Projects. In response to the following Credit Interpretation Request (CIR): “How does a project team classify duct sealants for application under EQc4.1?” the USGBC issued the following ruling: “Project teams may classify duct sealants under “Other”, as listed in the SCAQMD VOC Limits table.”

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  • Technical Paper ERRATA for the Task Force Page in HVAC Duct Construction Standards, 3rd Edition 2005

    This file replaces the current Task Force page in the HVAC Duct Construction Standards – Metal and Flexible, Third Edition. Due to a printing error some of the former committee members were incorrectly identified.

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  • Technical Paper Architectural Fascia and Coping Wind Tests Report

    SMACNA’s Technical Resources Committee, with the guidance of the Architectural Sheet Metal Council Steering Committee, conducted wind testing of custom-fabricated gravel stop fascia and coping designs shown within the SMACNA Architectural Sheet Metal Manual. This report has been updated with copper results (MAY 2009).

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  • On Demand Webinar HVAC Duct Construction Standards

    This webinar will demonstrate how to use SMACNA's Third Edition of the HVAC Duct Construction Standards to determine the proper range of construction options of rectangular duct used in today's commercial market.

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  • Technical Paper 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. The requirements of the Model Code groups have been identified and the responsibilities of architects, engineers/designers, code officials and contractors have been outlined. The use of this paper will assist contractors in those situations where they are being forced to provide products, which are not adequately specified and detailed on the project plans and specifications and, which were not included in contractors' estimates for the project. This guideline is intended to be a generic educational tool for use by all parties to the construction process. We encourage all members to provide copies of this paper to building owners, architects, engineers and code officials so that all parties gain an understanding as to the requirements of the codes, their respective responsibilities and the technical complexity and costs associated with this issue.

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  • Technical Paper ERRATA for HVAC Duct Construction Standards, 3rd Edition 2005

    This technical paper contains ERRATA for the HVAC Duct Construction Standards, Third Edition 2005. The corrections are noted in shading for those cells in the tables affected. Please download and include this listing of corrections with your copy of the manual and reference it as needed.

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  • Technical Paper SMACNA Master Index of Technical Publications

    The Master Index provides contractors, design professionals, and code officials with a centralized resource of SMACNA technical documents. The index includes key words or phrases from all SMACNA technical standards, manuals and guides.

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  • Technical Paper ERRATA, Rectangular Industrial Duct Construction Standards

    This technical paper contains ERRATA for the Rectangular Industrial Duct Construction Standards, Second Edition 2004. Please download and include this listing of changes with your copy of the manual and reference it as needed.

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  • Technical Paper New Test Standards for Fire, Smoke and Combination Fire/Smoke Dampers

    On July 1, 2002, damper manufacturers are required to provide fire, smoke and combination fire/smoke dampers that are tested to new Underwriters Laboratories (UL) testing requirements. A description and summary of these new test standards and some possible issues resulting from these standards is given in this paper.

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  • Technical Paper SMACNA CAD Standard

    As an organization with contributing members on the National CAD Standard (NCS) Committee, SMACNA is committed to improving electronic communication between members of the architect/engineer/contractor (AEC) community, and the overall quality of construction. The “SMACNA CAD Standard,” second edition, 2001, articulates in greater detail the CAD standards that will enable SMACNA Contractors, and other members of the AEC community to apply CAD effectively to mechanical, fire protection, and plumbing design and construction. Additionally, the CAD Project Protocol and checklist included as appendices help contractors work in greater harmony with all members of the construction project team and avoid some of the pitfalls that can surprise even the experienced CAD user.

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  • Technical Paper Improper Fire Damper Installation

    SMACNA is being 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. Specifically we refer to requirements to seal the retaining angles to the wall/floor fire rated assembly and to other directives to fill the expansion space with materials such as mineral wool, ceramic fiber or firestopping caulks. This paper will address these issues individually and clarify these requirements in light of standard installation procedures as required by damper manufacturers. Contractors are encouraged to provide copies of this paper to building owners, architects, engineers and code officials so that all parties gain a better understanding as to the proper and approved methods of fire damper installation.

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  • Technical Paper 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 during duct installation, and to provide reasonable installation recommendations that can be implemented to meet these goals.

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  • Technical Paper ERRATA, Guide for Steel Stack Construction, 2nd Edition 1996

    This technical paper contains ERRATA for the Guide for Steel Stack Construction, Second Edition 1996. Please download and include this listing of changes/corrections with your copy of the manual and reference it as needed.

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  • Technical Paper Building Code Update

    This technical paper reviews the Model Building Code process of the International Code Council (ICC) and National Fire Protection Association (NFPA) Building 5000 Code and addresses SMACNA National's position with regards to the efforts of the code community to develop a single set of comprehensive and coordinated national codes. SMACNA National has long been involved in the code setting process to ensure that the SMACNA Standards currently utilized by the HVAC industry would be included as the basis for duct construction.

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