Rectangular industrial duct construction standards, 2nd ed. Smacna 1922 rectangular industrial duct construction standards inchpound version ansi 0022011 standard by sheet metal and air conditioning contractors national association, 08012004. Rectangular duct deflection limits as taken from the smacna hvac duct construction standards, 2nd ed. This is to be used for return duct subject to negative pressures greater than 4 inches w. Rectangular industrial duct construction standards, metric. The primary impact the code changes may have on grease duct selection is cost differentiation. Research proved that duct leakage could be well defined as a function of the static pressure and the surface area of the duct. Duct construction, including sheet metal thicknesses, seam and joint construction, reinforcements, and hangers and supports, shall comply with smacnas hvac duct construction standards metal and flexible and performance requirements and design criteria indicated in duct schedule article. This latest publication is based on the exact same theoretical.
Figure 22 rectangular ductlongitudinal seams hvac duct construction standards metal and flexible third edition. Smacna 19222004 rectangular industrial duct construction. Dyn oseal ii is an all purpose industrial grade duct sealant for all types of metal. Rectangular industrial duct construction standards ip. Rectangular industrial duct construction standards metric. The types of fittings to be used based on the designers calculations of fitting losses i. This edition of the rounded industrial duct construction standards expands the scope of the 1977 version, and updates the original text to incorporate a revised theory of design. Hotrolled steel, galvanized steel, stainless steel, and aluminum are among the more popular materials used. The 2004 edition of the rectangular industrial duct construction standards offers a new approach to the selection of material thickness and reinforcing systems for. Foreword this third edition of the smacna commercial metal and flexible. The third edition of the hvac duct construction standards metal and flexible is. Table b compares the cost of a rectangular versus prefabricated grease duct. The first thing we cover is hvac duct construction, and we break that into three programs.
Design of large ductwork structural engineering general. Smacna round and rectangular industrial duct construction standards. The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction. Smacna 19222004 rectangular industrial duct construction standards inch pound the second edition of the rectangular industrial duct construction standards expands the scope of the 1980 version, updating original text to incorporate a revised theory of design, new materials and more ouser friendlyo tables. There has long been a need for industrial duct construction standards for air pollution control and industrial ventilation systems. Our standard of fabrication for typical hvac duct is in accordance with the smacna hvac duct construction standard metal and flexible 2005. These standards provide a simple 3step procedure for the selection of material gage, reinforcement systems, and connections based on clearly defined design parameters.
Rectangular industrial duct construction standards inch pound. Rectangular industrial duct construction standards inch. Errata, rectangular industrial duct construction standards. Included are new tables for stainless steels and aluminum, plus expanded chapters on materials, welding practices, and a guide specification. Corporate headquarters sheet metal connectors, inc. Smacna rectangular industrial duct construction standards. Rectangular industrial duct construction standards second edition, 2004 errata note. Rectangular industrial duct construction standards. Certified copies of these tests are available upon request. If you try to open a pdf cd version of the manual on a different computer, you will not be successful. Errata, rectangular industrial duct construction standards this technical paper contains errata for the rectangular industrial duct construction standards, second edition 2004.
Smacna 19662005 pdf hvac duct construction standards. I second the smacna recommendation rectangular industrial duct construction standards dictates material gage and stiffener choices. Rectangular industrial duct construction standards order no. A comprehensive duct layout indicating sizes, design airflows, pressure class, and routing of the duct system. Smacna 19662005 pdf hvac duct construction standards ansismacna 1966 hvac duct construction standards metal and flexible, 3rd edition smacna 0062006 edition. Rectangular industrial duct construction standards inch pound smacna on. Smacnas manual, entitled round industrial duct construction standards, includes information on all of these types of materials.
To develop new, and collect existing, duct construction practices and data to serve as an authoritative source of accepted industrial practices for contractors, design engineers, facility managers, and pollution control. Rectangular duct is the most common form used for hvac. These duct construction standards are intended for use by contractors, fabricators and designers of air pollution control, pneumatic conveyance and industrial ventilation systems. Rectangular industrial duct construction standards the second edition of the rectangular industrial duct construction standards 2004 expands the scope of the 1980 version, updating original text to incorporate a revised theory of design, new materials and more user friendly tables. Round industrial duct construction standards book, 2nd ed. The first four entries on this list only affect the hard copy version of this publication but not the electronic versions cd or downloadable files. This latest publication is based on the exact same theoretical work and scope of the earlier ip version. Rectangular industrial duct construction standards by smacna. Fibreglass duct board is insulated and sealed as part of its construction. A wide range of materials is available for industrial duct construction. The 2004 edition of the rectangular industrial duct construction standards offers a new approach to the selection of material thickness and reinforcing systems for rectangular industrial duct subject to positive or negative pressures up to and over 100 w. This version of the rectangular industrial duct construction standards, 2nd. This second edition expands the scope of the 1980 version, updating original text to incorporate a revised theory of design, new materials and more user friendly tables. Smacna technical manuals pmsmca plumbing mechanical sheet.
The second edition of the rectangular industrial duct construction standards expands the scope of the 1980 version, updating original text to incorporate a revised theory of design, new materials and more user friendly tables. Fibreglass duct board provides excellent sound attenuation, but its longevity is highly dependent on its closure and fastening systems. Ordinary heating, ventilating, and air conditioning duct systems read air pressures at 0. Spiral pipe of texas has a fully capable shop for fabricating all of your rectangular duct needs, in addition to our core products of round and flat oval ducts. Smacnas technical university sells out smacna greater chicago. Description smacna round industrial duct construction standards. We can also fabricate in accordance with the smacna rectangular industrial duct construction standards 2004 or custom standards. Smacna 19432007 rectangular industrial duct construction. The following tests of rectangular duct sections and transverse joints were conducted in accordance with section vii of the smacna hvac duct construction standards, 2nd ed. I have used the manual for several ducting projects whether the standard covers your particular construction depends make a. Ansismacna 0062006 hvac duct construction standards. Smacna round industrial duct construction standards. Adobe acrobatreader and the fileopen security handler plugin is required to view smacna manuals. 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.
Residential comfort system installation standards manual. Rectangular industrial duct construction standards second. Rectangular industrial duct construction standards, 2nd. Smacna duct construction standards search engineering360. It is usually used to form rectangular supply and return trunks. Included are new tables for stainless steels and aluminum, plus expanded chapters on materials, welding practices, and. Ind duct cons rectangular industrial duct construction standards. Resistance to corrosion and ease of modification are advantages of frp. Rectangular duct for hvac duct systems fabricator fort. The 1980 edition of these standards was the first publication dealing with the selection of duct gauge and reinforcement for rectangular industrial duct systems. Smacnas technical university sells out smacna greater. Smacnahvac duct construction standardsmetal and flexible, third edition 2005.
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