Practice Exam with 45 Questions, Answers with page numbersEffective July 1, 2022, this books will be on the state exam for Air A, Air B, and Mechanical.
HVAC Duct Construction Standards - Metal and Flexible 4th Edition is intended primarily for commercial and institutional duct construction and contains tables and details for constructing ductwork for ½-inch to 10-inch wg positive and negative pressures. This book improves upon previous editions with expanded pressure class tables, separate tables for TDC/TDF construction and expanded tables for round duct construction including 6-inch wg positive and negative pressure and sizes up to 96 inches. New in this edition is an engineering and design chapter to provide additional information to design professionals, double-wall construction details, new casing construction details and additional accessory items. The standard is applicable for construction using uncoated steel, galvanized and stainless steels and a limited range of aluminum ducts. This standard has been adopted in the International Mechanical Code. Includes soft metrics.