Sheet metal & Air Conditioning Contractors’ National Association

Technical Resources

Papers and 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.

  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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  • 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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