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https://nccashrae.org/images/meeting/031616/march_dinner_preso.pdf
ANSI/SMACNA 006-2006 HVAC Duct Construction Standards Eli P. Howard, III Sheet Metal and Air Conditioning Contractors’ National Association
https://law.resource.org/pub/us/cfr/ibr/005/smacna.duct.1995.html
NOTES FOR SPECIFIER; 1.0 DUCT CONSTRUCTION Ductwork and supports shall conform to the HVAC Duct Construction Standards, Metal, and Flexible, Second Edition, 1995. Where fittings of configurations not shown in the HVAC-DCS are shown on the contract drawings, they shall be constructed as though they were therein.
https://www.scribd.com/document/84920812/Smacna-Hangers-and-Supports
Smacna Hangers and Supports - Free download as PDF File (.pdf), Text File (.txt) or read online for free.3.5/5(5)
https://www.grbx.com/ipin/scans/2012/0900-A/Specs/233113.pdf
for static-pressure class, applicable sealing requirements, materials involved, duct-support intervals, and other provisions in SMACNA's "HVAC Duct Construction Standards - Metal and Flexible." 1. Fabricate round ducts larger Than 90 inches in diameter with butt-welded longitudinal seams.
https://www.engineeringtoolbox.com/ductwork-spacing-d_927.html
Support systems for ductwork may provide restraint in three directions against displacement and rotation. Consideration must be given with restraining ducts to avoid development of excessive internal duct stresses caused by expansion or contraction due to temperature variations.
https://pmcservices.utexas.edu/dcstandards/divisions/SubgroupAppendices/5.23.31HVACDucts.pdf
A. Codes and Standards that are Standard at the University: 1. SMACNA Standards: Fabricate, support, install, and seal in accordance with SMACNA's "HVAC Duct Construction Standards, Metal and Flexible". 2. ASHRAE Standards: Comply with ASHRAE Fundamentals Handbook and ASHRAE Systems and Equipment for design and fabrication of ductwork. 3.
https://www.phpsd.com/rooftop-support-systems/duct-supports
PHP duct supports are designed and engineered to adhere to your unique specifications and solve every rooftop issue you have. PHP is the leading designer, manufacturer, and supplier of innovative and sustainable roof, pipe, and, equipment support systems in the nation. Schedule a roof evaluation.
Located in headquarters outside Washington, D.C., the Sheet Metal and Air Conditioning Contractors' National Association (SMACNA), an international association of union contractors, has 1,834 members in 103 chapters throughout the United States, Canada, Australia and Brazil.
https://suburbansheetmetal.com/_documents/Suburban%20Sheet%20Metal%20Ltd%20SPECS.pdf
notes: 1. tdc duct constructed per smacna standards-first edition 1995 2. duct fabricated using pittsburg seams. 3. all duct stiffened by machine formed beads spaced at 12” o.c. 4. duct work to be sealed per smacna hvac table 1-2 5. tdc cnt-jnt-condu-loc @ tdc connector center of duct & @ tdc connector
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