HVAC Duct Construction Standards -- Metal and Flexible contains tables and details for constructing ductwork from ½ to 10 Wg positive and negative pressures. It also gives information about pressure class tables, separate tables for TDC/TDF construction and expanded tables for round duct construction, including 6 Wg positive and negative pressure and sizes up to 96. This book also provides additional information to design professionals like double-wall construction details, casting construction details, and additional accessory items.
This book is very helpful when taking the exam especially with the tabs that I purchase from the contractor campus.Joanna Gonzalez
So much information that this book provided me with for my exam ! and also all the information that Contractor Campus provided me with made this entire process so much easier on me!
Jess Marie