View Product DetailsHome | Air Conditioning A | HVAC Duct Construction Standards, 4th Edition, 2020
This edition of the HVAC Duct Construction Standards - Metal & Flexible is primarily for commercial and institutional projects and contains first time ratings for the TDF and the TDC connectors. Schedules have been standardized on "minimum" thickness rather than "nominal" thickness of sheet metal - a major change. The new construction standards contain re-rated rectangular, round, oval and flexible duct constructions for positive or negative pressures up to 10" water gauge (2500 Pa). Widths go to 120" in gauges 26 to 16. Diameters go to 84" in gauges 28 to 16. New performance requirements facilitate equivalent ratings for non-illustrated construction. The data have been reorganized for easy use and reference; includes metrics. Other revisions occur in duct liner, hangers, fittings, vanes, dampers, tie rods, joints and tests. Lead shielding has been added. Seal classes, casings, louvers, rooftop vents, sheet gauge (thickness) tolerances and accessories are retained. For uncoated steel, galvanized steel, stainless steel and some aluminum ducts. Covers new rectangular duct reinforcement options for using tie rods at mid-panel in lieu of external intermediate reinforcements - as Addendum No. 1, 11/97. Adopted in the 1996, 1998 ,2000 and 2005 ICC International Mechanical Code. This book is required for the Florida State Certified Contractor's exams for Air Conditioning A & B, Mechanical and Sheet Metal.
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