The revised round industrial duct construction standards, 3rd edition, 20, an american national standard, ansi smacna 00520, is now available. Soteriades, of the catholic university of america, for his work in developing these standards. Advice to consult the smacna hcva air duct leakage test manual was entered. Minimum gauge of galvanized steel rectangular supply, return and exhaust ductwork shall be 24. As an ansiaccredited standards developing organization, smacna standards and manuals address all facets of the sheet metal industry, from duct construction and installation to. Mid panel gage and smacna hvac design manual pdf or combinations of sample of. Minimum duct gauge shall be 22 for ducts up through 43, 20 gauge up. Also, both options have been shown, so as to provide this manual as a quick reference to smacna standards. Click here to purchase the full version from the ansi store. Smacna cad symbols dxf format 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. As an ansiaccredited standards developing organization, smacna standards and manuals address all facets of the sheet metal industry, from duct construction and installation to air pollution control, energy recovery and roofing. Duct velocity calculate velocities in circular and rectangular ducts imperial and siunits online calculator. Spiral pipe of texas products are manufactured in accordance with the latest smacna, ashrae and spida standards.
Smacna cad standard second edition v notice to users of this publication 1. Fire, smoke, and radiation dampers ashrae iowa chapter. Tdf transverse joints fabricated in accordance with the 1995 smacna hvac duct construction standards duct dimension 0 26 27 36 56 20 56 24 56 22 56 22 56 22 spiral pipe of texas fort worth, texas ph. Corporate headquarters sheet metal connectors, inc. You can carry out the building leakage tests using a gauge, fan and door panel and capture the readings on paper to later enter into fantestic so the software can calculate compliance for you and generate a. In addition to our standard nitrile gasket, nordfab offers special clamp gasket material for high heat, food applications, etc.
A quick overview of the changes is provided in the front of this manual. J connect rolled formed from 20 gage galvanized steel. Smacna testing and research institute verified that sheet metal connectors, inc. Aug 01, 2012 sheet metal and air conditioning contractors national association smacna, inc.
Use material, weight, thickness, gauge, construction, and support and installation methods as outlined in the abovelisted smacna publications. Standard aluminum gauge table for 2005 smacna duct standard up to 2 duct thickness smacna duct flow search engine may 6th, 2018 11 1 2017 give me the perfect smacna standards for the ducting sheet gauges for a specified duct sizesof both factory fabricated and site fabricaspiral duct amp fittings eastern. Submittal forms must be completed to indicate all required elements of duct construction. Ansi smacna 0062006 hvac duct construction standards. The current 2017 state of the art for air leakage in. Nfpa standard 255 method of test of surface burning characteristics of building materials naima fibrous glass duct construction standards smacna hvac duct construction standards, metal and flexible ul heating, cooling, ventilating and cooking equipment directory ul standard 181 factorymade air ducts and air connectors. The results of these certified tests which permit the variation are shown on the back page of this manual.
Fabricate and support in accordance with smacna low pressure duct construction standards and ashrae handbooks, except as indicated. All round spiral duct and fittings shall be manufactured from g90 galvanized steel, conforming to astm and smacna standards. Standard punched angle rings may be substituted at plenums plus discretion. Research proved that duct leakage could be well defined as a function of the static pressure and the surface area of the duct. When double wall or insulated duct occurs, tie rods must pass through the outter shell. Here are the few gauge system as per smacna standards. Lateral section of grooved seam with optional corrugated grooves. University of pennsylvania design standards revision july 2019. Disclaimer of warranties a the sheet metal and air conditioning contractors national association smacna provides its product for informational. 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. Fittings shall have a construction radius of 112 times the diameter.
Ansismacna 0062006 hvac duct construction standards. Free ductwork tables for sizing and construction of hvac air ducts. While the first edition served industry very well for many years, technology has continued to evolve and in response to our memberships request, smacna s rectangular industrial duct. Smacna s industrial duct construction standards committee is indebted to dr. Shop standards must be in accordance with the 2005 third edition of the smacna hvac duct construction standards. Fire rated systems design guide fire rated duct solutions. Minimum yield strength for steel sheet and reinforcements shall be 30,000 psi 207 kpa with a thickness not less than for 24 gauge for duct diameters 250 mm to. Give me the perfect smacna standards for the ducting sheet. Flat seam roofs used in lowno slope areas or areas subject to flooding or standing water typically made from 20 x 28 sheets relative geometry is important fro expansion and contraction, sheet use efficiency, and wind load. Provide duct material, gauges, reinforcing, sealing, etc. Copper or stainless steel is recommended lock and seal all joints, solder joints on slopes less than 3. Standard material for the inner shell of spiral pipe is perforated steel astm a653, with 332 holdes on 316 staggered centers for a free area of 23%.
Hanger spacing, hanger rod diameter and angle support size. Qf ducting is no exception and is not sold as an airtight system. Eastern tight round spiral duct and fittings construction standards gauge selection for galvanized steel astm a653 or paint grip. G90 coated galvanized of lockforming grade conforming to astm a653 and a924 standards. Duct constructions compliant with other editions of the smacna standards that do not meet or exceed the 1985. Ventilation systems for ventilation and air handling air change rates, ducts and pressure drops, charts and diagrams and more. Single wall and double wall, round and flat oval ducts shall be spiral lockseam, spiral lockseam with. The research also led to the development of the smacna hvac air duct leakage test manual 1 st edition. Single wall round 1995 smacna standards standard gauge chart diameter spiral pipe long seam pipe fittings 3 14 17 18 20.
Air duct designed for a duct pressure class of 12 inch w. Smacna hvac duct construction standards metal and flexible, third edition 2005. Standard material for the inner shell of fittings is solid steel. Offer an application for smacna duct size of the calculation requirements. Stainless steel 24 20 gauge a240 304 or 316 48 check with factory for availability of 72 in 26 gauge galvanized note. Round galvanized gauge selection shall be in accordance with table 35 of the smacna duct construction standards metal and flexible, except that the following minimum gauges are required. Ductwork and reinforcements shall be 316l stainless steel, 18 gauge minimum. Smacna hvac duct construction standards metal and flexible 1985 edition. Duct connection products technical information provides a large butylfilled integrated sealant pocket to ensure proper sealing offers a metal shoulder to protect gasket available in 10 and 20 lengths recommended for 14 gauge through 26 gauge ductwork model flg j. The 1980 edition of these standards was the first publication dealing with the selection of duct gauge and reinforcement for rectangular industrial duct systems. Duct sizing and construction tables according to smacna pdf. Smacna is the sheet metal and air conditioning contractors national association. Fittings are assembled with stitch welds, spot welds, or standing seams and are sealed. Industrial duct is a broad classification of ductwork used in industry for many diverse applications.
The smacna cad standard scs, formerly calledcadd symbols and layering. The types of fittings to be used based on the designers calculations of fitting losses i. Gauge 3 14 26 3 10 28 3 14 28 16 26 24 12 14 26 16 26 26 28 36. Hvac duct construction standards metal and flexible third edition iii foreword this third edition of the smacna commercial metal and flexible duct construction standards is another in a long line dating from the 1950s. Spiral pipe 3 16 26 18 26 24 28 40 22 42 50 20 52 84 18 gauge schedule. Smacna members will receive an email shortly with instructions on how to receive their gratis copy. Duct material calculation gi sheet, total sheet required in kgs. Zinccoated metal shall be in accordance with astm a525.
University of pennsylvania design standards revision. A major shift ashrae changed the leakage class in their standard 90. Smacna s hvac air duct leakage test manual6 commentary found in section 5. Aluminum alloy shall be in accordance with astm b209, mill finish.
Hvac training what is smacna standards for ducting. Construct ductwork to meet all functional criteria defined in the 1985 smacna standards except where noted otherwise. Metal and flexible 2nd edition 1995, and the current smacna duct construction standard hvac duct construction standards. For a metal duct joint t1, flat drive slip, use gauge not less than two gauges less than duct gauge, with gauge minimum. Duct constructions compliant with other editions of the smacna standards. The table below can be used to compare equivalent diameters for rectangular and round circular ducts, ductwork sizing, friction loss, sheet metal gauges, etc. The current 2017 state of the art for air leakage in ductwork. 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. Chapter 5 as outlined in the smacna hvac air duct leakage test manual, latest. Jr ated flange 2 0 gauge galvanized steel qvle ets smacna rigidity class j for.
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