Orange County NC Website
Browse       Search
DocuSign Envelope ID: B94F2D40-3B3C-47A7-86C2-6F1 B4F92C62C <br /> Orange County Emergency Services Building Construction Documents <br /> SECTION 23 31 00 <br /> HVAC DUCTS AND CASINGS <br /> PART 1 GENERAL <br /> 1.01 SECTION INCLUDES <br /> A. Metal ductwork. <br /> 1.02 REFERENCE STANDARDS <br /> A. ASTM A36/A36M - Standard Specification for Carbon Structural Steel; 2014. <br /> B. ASTM A653/A653M - Standard Specification for Steel Sheet, Zinc-Coated (Galvanized)or Zinc-Iron <br /> Alloy-Coated (Galvannealed) by the Hot-Dip Process; 2017. <br /> C. ASTM E84- Standard Test Method for Surface Burning Characteristics of Building Materials; 2018. <br /> D. ICC-ES AC01 -Acceptance Criteria for Expansion Anchors in Masonry Elements; 2015. <br /> E. ICC-ES AC106-Acceptance Criteria for Predrilled Fasteners (Screw Anchors) in Masonry <br /> Elements; 2015. <br /> F. ICC-ES AC193-Acceptance Criteria for Mechanical Anchors in Concrete Elements; 2015. <br /> G. ICC-ES AC308-Acceptance Criteria for Post-Installed Adhesive Anchors in Concrete Elements; <br /> 2016. <br /> H. NFPA 90A- Standard for the Installation of Air-Conditioning and Ventilating Systems; 2018. <br /> I. SMACNA (DCS)- HVAC Duct Construction Standards Metal and Flexible; 2005 (Revised 2009). <br /> J. SMACNA(LEAK)- HVAC Air Duct Leakage Test Manual; 2012. <br /> K. UL 181 - Standard for Factory-Made Air Ducts and Air Connectors; current edition, including all <br /> revisions. <br /> 1.03 SUBMITTALS <br /> A. Product Data: Provide data for duct materials and duct connections. <br /> B. Shop Drawings: Indicate duct fittings, particulars such as gages, sizes, welds, and configuration <br /> prior to start of work for 1/2" pressure class and higher systems. <br /> C. Test Reports: Indicate pressure tests performed. Include date, section tested, test pressure, and <br /> leakage rate, following SMACNA(LEAK). <br /> 1.04 QUALITY ASSURANCE <br /> A. Manufacturer Qualifications: Company specializing in manufacturing the type of products specified <br /> in this section, with minimum three years of documented experience, and approved by <br /> manufacturer. <br /> 1.05 FIELD CONDITIONS <br /> A. Do not install duct sealants when temperatures are less than those recommended by sealant <br /> manufacturers. <br /> B. Maintain temperatures within acceptable range during and after installation of duct sealants. <br /> PART 2 PRODUCTS <br /> 2.01 DUCT ASSEMBLIES <br /> A. Regulatory Requirements: Construct ductwork to NFPA 90A standards. <br /> B. Ducts: Galvanized steel, unless otherwise indicated. <br /> C. Low Pressure Supply(Heating Systems): 2 inch w.g. pressure class, galvanized steel. <br /> D. Low Pressure Supply(System with Cooling Coils): 2 inch w.g. pressure class, galvanized steel. <br /> E. Medium and High Pressure Supply: 6 inch w.g. pressure class, galvanized steel. <br /> F. Return and Relief: 2 inch w.g. pressure class, galvanized steel. <br /> G. General Exhaust: 2 inch w.g. pressure class, galvanized steel. <br /> H. Outside Air Intake: 2 inch w.g. pressure class, galvanized steel. <br /> I. Combustion Air: 1 inch w.g. pressure class, galvanized steel. <br /> PDC Project 18102 HVAC DUCTS AND CASINGS 2331 00- 1 <br /> 12/17/2018 <br />