Corporate headquarters sheet metal connectors, inc. Engineering standards manual std 342 100 chapter 6mechanical section d30 hvac, heating, cooling, hvac distribution, and tab. Principle of duct design in hvac systems cedengineering. Smacna round industrial duct construction standards. Also, both options have been shown, so as to provide this manual as a quick reference to smacna standards. Offers options methods, materials and construction for solving energy costs and conservation. The seismic hazard tables with this special edition are limited to the. 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. Source book for efficient air duct systems in europe. Hvac duct construction standards metal and flexible third edition.
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. Exhaust ducts must withstand a negative pressure of 1. Linx industries ductwork is designed and constructed in accordance with the requirements of this duct construction standard. Earlier this month, smacna announced the availability of the revised round industrial duct construction standards, 3rd edition, 20, an american national standard, ansismacna 00520. Hvac air duct leakage test manual, 2nd edition 2005 smacna. The fourth edition of hvac systems duct design presents the basic methods and procedures. Test methods for pressure sensitive tapes pressure sensitive tape council. They were placed on your computer when you launched this website. Cleanliness for ducts detailed in new smacna guidelines. Ordinary heating, ventilating, and air conditioning duct systems read air pressures at 0. Smacna standards and manuals address all facets of the sheet metal industry, from duct construction and installation to air pollution control, from energy recovery to roofing. System design includes proper selection and sizing.
According to smacnas website, the standard expands the scope of the. Use a supply duct rated at a minimum positive working pressure of 112 inches of water. Ansi, the american national standards institute, has accredited smacna as a standardssetting organization. The types of fittings to be used based on the designers calculations of fitting losses i. Smacnaansi hvac duct construction standardsmetal and flexible, 3rd ed. Raw duct is fabricated for proprietary duct connection systems. Guide for free standing steel stack construction 2011 smacna.
Nonexclusive, royaltyfree permission is granted to government and private sector specifying. Disclaimer of warranties a the sheet metal and air conditioning contractors national association smacna provides its product for informational. How are the duct designers, and other participants, working with duct design and requirements today. A brand new duct system filled with construction dust and debris cannot be expected to operate to clean air standards and can impact performance of the buildings mechanical system. However, proprietary products such as the aircon flange 4 bolt system represent advances in the. Provide balancing dampers at supply, return, and general exhaust branches when connected to larger ducts, as required, for air balancing. Recognizing the increased popularity of frp ductwork, this edition is expanded to include commercialhvac applications. This has included active participation in technical and standards committees for professional organizations that serve the hvac industry, such as ashrae, astm, amca, and smacna. This manual provides the hvac system designer detailed information on duct design and u. As a result, it is expected that sealing and testing duct systems will play an increasingly significant role in commercial building construction and remodeling. A comprehensive duct layout indicating sizes, design airflows, pressure class, and routing of the duct system.
Smacna 0162012 hvac air duct leakage test manual, 2nd edition. In addition to the basic engineering guidelines for the sizing of hvac ductwork systems, the manual also. Fabricate, support, install, and seal in accordance with smacnas hvac duct construction standards, metal and flexible. Ae duct designs shall, at minimum, be in general compliance with smacna standards. Seismic restraint manual guidelines for mechanical oshpd. 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%. Smacna round industrial duct construction standards updated.
Fibrous glass duct liner standard hereinafter referred to as naima fgdls, or of the sheet metal and air conditioning contractors national association hvac duct construction standards metal and flexible hereinafter referred to as smacna hvac dcs or. Our policy towards the use of cookies techstreet, a clarivate analytics brand, uses cookies to improve your online experience. This design standard has the purpose of creating a consistent application of ductwork requirements throughout the east side union high school district therefore achieving a. 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. For rectangular ductwork, new duct stiffener tables are added for easier selection. In addition to the basic engineering guidelines for the sizing of hvac ductwork systems, the. Comply with ashrae fundamentals handbook and ashrae systems and equipment for design and fabrication of ductwork. Standard material for the inner shell of fittings is solid steel. Standard for safetyfactorymade air duct materials and air duct connectors ul 181 underw riters laboratories, inc. Guide for free standing steel stack construction, 3rd. Revised to be in compliance with smacna hvac duct construction standards, 2nd ed. Code changes for duct system standards you should know.
The 660 pagebook includes expanded tables for stainless steel and aluminum, expanded tables for duct sizes up to 96 inches in diameter, plus class 5 systems handling corrosives and spiral lockseam pipe. The aes duct specification shall state that duct construction shall, at minimum, meet smacna duct construction standards the aes duct specification shall state tha. This american national standard ansismacna 0062006 contains tables and details for constructing ductwork for. The smacna hvac system duct design manual offers new loss coefficients for elbows with 45degree throats on square and radius heels and radius throats with square heels. The results of these certified tests which permit the variation are shown on the back page of this manual. Hello everyone, i am new to revit, and working in hvac field. Material thickness astm type duct end treatment galvanized 26 18 gauge a653 g60g90 48, 60, 72 paint grip 24 18 gauge a653 a60 60 pvs 24 18 gauge a653 4 x 1, 4 x 4 60 raw both ends aluminum. 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.
It is presented in the format of the 1993 ashrae fundamentals handbook, load and energy. Includes a new educational chapter for designers and. Supporting this, an underground installation section is added as well as added language on testing and balancing, duct sealing, and duct leakage. The current 2014 state of the art for air leakage in. It is intended to help commercial duct installation contractors, engineers and building owners towards achieving a clean, fullperformance duct system. Theauthorityhavingjurisdictionshouldbereferencedtodeterminewhatlaw, ordinanceorcodeshallapplyintheuseofflexibleairductsand. Supports are available in any of the version in revit inbuilt or have to d. The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction. Smacna standards and manuals address all facets of the sheet metal and hvac industry, from duct construction and installation to indoor air quality, from energy recovery to roofing, from solar energy to welding. To retrace your path within a pdf document, click the. Static pressure plus velocity pressure equals total pressure. Fibrous glass duct liner standard hvac duct construction.
Codes and standards that are standard at the university. Research proved that duct leakage could be well defined as a function of the static pressure and the surface area of the duct. Smacna cad standard second edition v notice to users of this publication 1. Rectangular duct construction standards aircon flange. This special edition of the smacna seismic restraint manual oshpd edition has been developed to meet the specific requirements of the california office of statewide health planning and development oshpd for hospital and health care facilities construction.
Download file hvac duct contruction standards smacna. The fourth edition of hvac systems duct design presents the basic methods and procedures required to design hvac air distribution systems. Use table d30gen1 local climate information for hvac system sizingdesign. Pressure in the ductwork is measured in inches of water column inwc. The round industrial duct construction standards, 3rd edition, 20, is. With, you can upload files to the internet and share them to users via websites, forums, social networks facebook, twitter, etc. Ductwork is an essential element of the mechanical space cooling and heating systems.
Residential duct systems for new and retrofit homes design and. 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. Smacnas technical resources department fields several thousand technical questions annually from architects, engineers, manufacturers and government personnel. Furnish duct listed by ul at flame spread rate of not over 25 and smoke developed rate of not over 50, and complying with nfpa. Losses compare favorably with elbows with double wall turning vanes in several cases. Smacna hvac duct construction standards free download. Rectangular duct construction standards the duct construction standards manual provided to the sheet metal industry by smacna is the most widely used construction guide for engineers and contractors. Hvac duct support smacna standard autodesk community. In addition, mills reports that 30% of the estimate of 1. A quick overview of the changes is provided in the front of this manual. Ansismacna 0062006 hvac duct construction standards. Ductwork taps shall be conical or clinch collar with 45 degree or boot connections.
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