NAIMA-AH116-2002.pdf
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1、FIBROUS GLASS DUCT CONSTRUCTION STANDARDS FIFTH EDITION COPYRIGHT c 2002, NAIMA, ALL RIGHTS RESERVED $20.00 LOW VELOCITY SYSTEMS 2 INCHES (500Pa) MAXIMUM STATIC PRESSURE Copyright North American Insulation Manufacturers Association Provided by IHS under license with NAIMALicensee=University of Texas
2、/5626000001 Not for Resale, 12/24/2006 01:09:00 MSTNo reproduction or networking permitted without license from IHS -,-,- FIBROUS GLASS DUCT CONSTRUCTION STANDARD FIBROUS GLASS DUCT CONSTRUCTION STANDARD LOW VELOCITY SYSTEMS 2“ w.g. (500 Pa) Maximum Static Pressure FIFTH EDITION, 2002 Copyright Nort
3、h American Insulation Manufacturers Association Provided by IHS under license with NAIMALicensee=University of Texas/5626000001 Not for Resale, 12/24/2006 01:09:00 MSTNo reproduction or networking permitted without license from IHS -,-,- FIBROUS GLASS DUCT CONSTRUCTION STANDARD ii PREFACE The North
4、American Insulation Manufacturers Association (NAIMA) presents this Standard as a recommended method of fabricating and installing air transmission ducts in buildings using fibrous glass material as specified herein. Rectangular ducts covered by this Standard are designed to operate at 2“ w.g. (500
5、Pa) static pressure or less and 2,400 feet per minute (12 m/sec) internal air velocity or less. Other duct configurations have been qualified for higher pressures and/or velocities. Underwriters Laboratories Inc. Standard for Closure Systems For Use With Rigid Air Ducts and Air Connectors UL 181A in
6、corporates key provisions of the UL 181 Standard, as well as additional provisions developed by NAIMA and various closure material manufacturers. The resultant standard provides the means for assuring the contractor and building owner that the selected closure system will, when properly applied, per
7、form within varied environmental conditions. NAIMA acknowledges SMACNAs Fibrous Glass Duct Construction Standards, Fifth Edition, 1979 as a basis for the scope and content of the present document. This Standard was developed using reliable engineering principles and research, plus consultation with
8、and information obtained from manufacturers, contractors, testing laboratories, and others having specialized experience. They are subject to revision as further experience and investigation may show is necessary or desirable. Construction and products which comply with this Standard will not necess
9、arily be acceptable if, when examined and tested, they are found to have other features which impair the result contemplated by these requirements. Dimensional data on 2 (51mm) thick fibrous glass duct board, with an R-value of 8.7 (RSI of 1.53), not having been widely used until recently, was not p
10、rovided in previous editions of this Standard, including the Fourth Edition (2001). This revised Fourth Edition includes thermal, acoustical, and dimensional data for 2“ (51mm) duct board. For more complete dimensional details, refer to supplement, Pub. No. AH-136. The North American Insulation Manu
11、facturers Association assumes no responsibility and accepts no liability for the application of the principles or techniques contained in this Standard. In particular, NAIMA makes no warranty of any kind, express or implied or regarding merchantability or fitness for any particular purpose, in conne
12、ction with the information supplied herein. Authorities considering adoption of this Standard should review all Federal, state, local and contractual regulations applicable to specific installations. This Standard is not intended to preclude alternate methods and materials of fabrication, closure, r
13、einforcement and support, when such methods and materials can be documented as providing equivalent performance. The North American Insulation Manufacturers Association extends its thanks to the member companies of its Air Handling Technical Subcommittee who have contributed their time and talents i
14、n the development of this Standard. NAIMA Air Handling Member Companies: CertainTeed Corporation800-233-8990 P.O. Box 860 Valley Forge, PA 19482 Johns Manville Corp.800-654-3103 P.O. Box 5108 Denver, CO 80217 Knauf Fiber Glass800-825-4434 One Knauf Drive Shelbyville, IN 46176 Owens Corning800-GET-PI
15、NK One Owens Corning Parkway Toledo, OH 43659 Copyright North American Insulation Manufacturers Association Provided by IHS under license with NAIMALicensee=University of Texas/5626000001 Not for Resale, 12/24/2006 01:09:00 MSTNo reproduction or networking permitted without license from IHS -,-,- FI
16、BROUS GLASS DUCT CONSTRUCTION STANDARD iii CONTENTS Preface. ii Contents iii, iv, v SECTION I. PERFORMANCE CRITERIA General requirements of air ducts . 1-2 Analysis and determination of requirements for fibrous glass ducts 1-2 Reinforcement 1-3 UL Class 1 Air Duct Rating 1-3 Longitudinal seams, tran
17、sverse joints . 1-4 Duct support 1-4 Thermal performance 1-4 Acoustical performance. 1-4 Leakage 1-4, 1-5 Characteristics and limitations, fibrous glass ducts . 1-6, 1-7 Fibrous glass duct system installation check list 1-8, 1-9 SECTION II. FABRICATION OF STRAIGHT DUCT MODULES Principle of modular d
18、uct construction 2-2 Fabrication logistics. 2-3 Layout methods; hand fabrication methods 2-4 Hand grooving tools 2-5 Hand fabrication - Centerline method 2-6, 2-7 Hand fabrication - Guide edge method 2-8, 2-9 Machine fabrication of straight duct modules . 2-10 Typical machine grooving tools; machine
19、 fabrication . 2-11 Fabrication dimensions, one piece duct . 2-12 Fabrication dimensions, two piece U-style duct 2-13 Fabrication dimensions, two piece L-style duct 2-14 Fabrication dimensions, four piece duct . 2-15 Stretch-out dimensions, 1“ (25mm) duct board. 2-16 Duct board utilization, 1” (25mm
20、) duct board . 2-17 Stretch-out dimensions, 1” (38mm) duct board . 2-18 Duct board utilization, 11/2” (38mm) duct board 2-19 Stretch-out dimensions, 2 (51mm) duct board 2-20 Duct board utilization, 2” (51mm) duct board . 2-21 Fabrication of duct module 2-22 Joining two duct modules 2-23 SECTION III.
21、 FABRICATION OF FITTINGS FROM MODULES OR FLAT BOARD 90 elbow with rail mounted metal turning vanes from module. 3-2 90 elbow with turning vanes from flat duct board 3-3 Three piece 90 elbow from duct board module. 3-4 Elbows of less than 90 from duct board module . 3-5 Tee from duct board module wit
22、h rail mounted turning vanes 3-6 Tee from flat duct board with fibrous glass turning vanes. 3-7 One way 30 offset from duct board module 3-8 One way offset of any angle from duct board module 3-9 One way transition from duct board module, reducing square edge panel . 3-10 One way transition from duc
23、t board module, reducing shiplapped panel 3-11 Two way transition from duct board module, reducing square edge and shiplap panels 3-12 Copyright North American Insulation Manufacturers Association Provided by IHS under license with NAIMALicensee=University of Texas/5626000001 Not for Resale, 12/24/2
24、006 01:09:00 MSTNo reproduction or networking permitted without license from IHS -,-,- FIBROUS GLASS DUCT CONSTRUCTION STANDARD iv One way transition from flat duct board, reducing shiplapped panel . 3-13 Focal (centerline) transitions 3-14 Transformers from one piece of flat duct board 3-15 Transfo
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