Linx industries ductwork is designed and constructed in accordance with the requirements of this duct construction standard. Fabricate, support, install, and seal in accordance with smacna s hvac duct construction standards, metal and flexible. Nonwelded double wall grease ducttype ht chimney systems. Smacna s mission is to provide products, services, and representation to enhance members businesses, markets, and profitability. Repair torn or damaged vapor barrierjacket with duct tape listed and labeled to standard. This authoritative manual is one that design engineers, industrial engineering departments, pollution control authorities, fiberglass manufacturers and installation contractors can rely upon for the proper selection, manufacture, and installation of frp duct systems. Revised to be in compliance with smacna hvac duct construction standards, 2nd ed. Smacna technical manuals pmsmca plumbing mechanical sheet. Smacna round industrial duct construction standards updated. It is intended to help commercial duct installation contractors, engineers and building owners towards achieving a clean, fullperformance duct system.
Underwriters laboratories standard 181 a supersedes them. Hvac duct support smacna standard autodesk community. Adequate clearances between ducts and roof penetration openings should be provided. Another function is to serve as an expansion joint for thermal expansion in larger duct runs. Book by sheet metal and air conditioning contractors national association, 2005 view all product details. Product detail sheet metal and air conditioning contractors. Smacna hangers and supports free download as pdf file. Please contact your nearest representative for specific details.
Resin used shall be the hetron 197 for its fire retardant and corrosion resistant properties. History of architectural metals first used by the ship building industrylead used in the 1500s with rolled copper use starting in late 1600s new york city hall used copper for roofing circa 1764. Reseal and retest as required to achieve the specified leakage class. Many new provisions for fitting reinforcement are in cluded. Ansismacna 0062006 hvac duct construction standards. Va standard details div 23 hvac steam all details 1 of 2 wbdg. Book by sheet metal and air conditioning contractors national association, 2006. Hvac duct support detail cad drawing cadblocksfree cad. This adaption also applies to the strut channel support in figure 5 6. Hello everyone, i am new to revit, and working in hvac field. Disclaimer of warranties a the sheet metal and air conditioning contractors national association smacna provides its product for informational.
Attachment of supports should use a minimum number of duct penetrations. Ductwork support spacing tech brief 1 questioncan we use 14 foot support spacing for round spiral ductwork. For additional tightness, place sealant between the angle and duct or seal the weld. Nonwelded grease duct systems installation, operation, and. Earlier this month, smacna announced the availability of the revised round industrial duct construction standards, 3rd edition, 20, an american national standard, ansismacna 00520. Va standard details div 23 hvac steam all details 1 of 2. Air duct leakage hvac 2011 technical paper pdf file smacna published the hvac air duct leakage test manual in conjunction with the smacna hvac duct construction standards.
Duct shall also pass an audible and touch test 2 from duct, conducted by the owners representative, regardless of pressure class. Where fittings of configurations not shown in the hvacdcs are shown on the contract drawings, they shall be constructed as though they were therein. Smacna cad standard second edition v notice to users of this publication 1. Smacna hvac duct construction metal and flexible 2005 table 52 allows for a maximum spacing of 12 feet. Va standard details div 23 hvac steam all details 2 of 2. The support distance for ductwork is typical based upon deflection, stress and cylinder buckling analysis. Welded black iron grease ducts nfpa 96 makes exception for factorybuilt slope to be installed per its ul instructions. Galvanized g60 and g90 phosphatized paint grip 304l stainless steel 316l stainless steel polyvinyl cated pcd aluminum special materials may be available. According to smacnas website, the standard expands the scope of the. Smacna hvac duct construction standards free download.
The american national standard ansi smacna 0112017 contains language, tables and details for the construction of hand layup. The details shall, as a minimum, indicate curbs, flashing, counterflashing, fire. When used in systems of any orientation, it can perform both functions simultaneously. Technical, safety and business publications from sheet metal and air conditioning contractors national association smacna. Duct construction, including sheet metal thicknesses, seam and joint construction, reinforcements, and hangers and supports, shall comply with smacna s hvac duct construction standards metal and flexible and performance requirements and design criteria indicated in duct schedule article. Research proved that duct leakage could be well defined as a function of the static pressure and the surface area of the duct. They, along with other details and the inspec tion list, are adapted from research and documenta. The types of fittings to be used based on the designers calculations of fitting losses i. Penetration into the qduct system duct is not permitted.
Smacna hvac duct construction standards metal and flexible, 3rd ed. A comprehensive duct layout indicating sizes, design airflows, pressure class, and routing of the duct system. Download this free hvac duct support cad detail for use in your mechanical design cad drawings. By conducting joint performance testing as described in chapter 11 of the smacna hvac duct construction standards, 3rd ed. In addition smacna 2005 stipulates the required wire size, rod, or strap required for proper support. Supports are available in any of the version in revit inbuilt or have to d. Upload your own cad models to make money or help the community with their cad designs. Nonexclusive, royaltyfree permission is granted to government and private sector advice to consult the smacna hcva air duct leakage test manual was. Install sleeves and seal and bare duct or insulated duct as specified herein and as shown in the details on the drawings.
Each detail is available in pdf and autocad dwg formats, go to our secure ftp site for the dwg format drawings. The cad details on this page are just some of the cad details available in this categorylibrary. Terminal devices shall be supported independently of the flexible duct. Spiral pipe 3 16 26 18 26 24 28 40 22 42 50 20 52 84 18 gauge schedule. Fd06 rooftop metal air shaft curb detail fd07 rooftop wood air shaft curb detail fd08 roof skylight detail fd09 rooftop chimney pipe detail fd10 rooftop plumbing vent pipe detail fd11 sheet metal pipe enclosure detail fd12 rooftop pipe roller support detail fd structural roof deck penetration detail fd14 metal covered expansion joint detail.
They address all facets of the business, from duct construction and installation to indoor air quality and air pollution control, from energy recovery to roofing. The standard contains tables and details for constructing ductwork for. Smacna technical manuals the sheet metal and air conditioning contractors national association smacna creates multiple standards and technical manuals used by the sheet metal industry. Smacna third edition 2005 smacna 2005 3rd edition smacna standard 3rd edition. This limitation of liability applies even if smacna has been advised of the possibility of such damages. By conducting joint performance testing as described in section vii of the smacna hvac duct construction standards, 2nd ed. Duct hangers and support information have been expanded and organized into a separate chapter which now includes. Duct specified as seal welded shall demonstrate zero leakage. Jun 26, 2001 the sheet metal and air conditioning contractors national association smacna recently published duct cleanliness for new construction guidelines. With, you can upload files to the internet and share them to users via websites, forums, social networks facebook, twitter, etc. Drawings below are generic details to show design intent only.
Flex ducts consist of a duct inner liner supported on the inside by a helix wire. With respect to hvacdcs figure 55, caddy speed link universal support system referenced above may be adapted to any of the illustrated support configurations except the two tier trapeze method in the lower right. Va standard details were updated in early 2009, div 22 and div 26 in early 2014, and the steam portion of div 23 in late 2017. Lowvelocity design will lead to larger duct sizes, but it may be worth since, doubling of duct. The drawings will help you gain a better understanding of engineered system design options, but these. The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction. Follow sealant manufacturers recommendations for application of the sealant. Guidelines and standards standard and guide details. Phenolic duct construction standards this is the first edition of the smacna phenolic duct construction standards. Duct construction to conform to the appropriate smacna publications. Duct support systems the mapa master base assembly is designed for use as the platform from which various support configurations may be manufactured. Pdf smacna commercial duct design vuong le academia.
Highvelocity hv duct systems are characterized by air velocities in the range of 2500 to 3500 fpm. 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. Hvac air duct leakage test manual, 2nd edition, 2012. Principle of duct design in hvac systems cedengineering. Although the mb815 is the standard base for duct supports. This american national standard ansi smacna 0222015 contains instruction, tables and details intended to provide basic phenolic duct fabrication and installation standards to the industry. Comply with ashrae fundamentals handbook and ashrae systems and equipment for design and fabrication of ductwork. If the designer does not designate pressure class for duct construction on the contract drawings, the basis of compliance with the smacna hvac duct construction standards is as follows. Duct system design guide first edition 2003 mcgill airflow corporation mcgill airflow corporation one mission park groveport, ohio 43125 duct system design. Refer to figure 2 for adjustable duct assembly details.
Cleanliness for ducts detailed in new smacna guidelines. All ductwork shall be designed, constructed, supported and sealed in. The standard includes model project specifications, duct performance characteristics, specifications and closures, fittings and connections, reinforcement. The tables below contain downloadable standard design detail drawings for typical unistrut applicationsmedical supports, rooftop walkways, and ceiling grid systems.
History of architectural metals first used by the ship building industrylead used in the 1500s with rolled copper use starting in late 1600s new york city hall used copper for roofing circa 1764 a copper roof was used on the rebuilt old senate chamber in 1819. September 1, 2015 erico international corporation 34600 solon. Ifthe faces of flanges are flush, thickconsistency sealant may be used in lieu of gasket. Duct leakage shall not exceed smacna leakage class 3. Contains guidelines for inspection of commercial hvac duct systems for compliance with smacna ansi hvac duct construction standards, metal and flexible, 3rd edition and fibrous glass duct construction standard 7th edition. Smacna approved duct supports shall be utilized in accordance with smacna standards for phenolic duct.
Spiral duct and fittings construction standards air distribution corporation air distribution corporation spiral duct and fittings are manufactured in accordance with applicable smacna, ashrae and spida standards. Typical vertical supports per local building code must be used. Smacna 3rd edition duct support free pdf file sharing. See double angle exterior reinforcement for oval duct chart for contractor furnished and installed reinforcinghangers. Thermal expansion not given but must be considered.
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