Smacna Hvac Duct Construction Standards Table 5 1

The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction.

Smacna hvac duct construction standards table 5 1.

For all ducts between the supply fan and variable volume control boxes and 1 250 pa w g. Duct over 120 inches. Example 4 duct is 140 x 70 inches at negative 2 in. A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system.

The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction. 1966 3 rd edition 2005 396 pages. If the designer does not designate pressure class for duct construction on the contract drawings the basis of compliance with the smacna hvac duct construction standards is as follows. Hvac duct construction standards metal and flexible third edition iii foreword this third edition of the smacna commercial metal and flexible duct construction standards is another in a long line dating from the 1950s.

Information required for duct construction. Figure 2 13 in hvac dcs use standard tables for sizes 120 in. This american national standard ansi smacna 006 2006 contains tables and details for constructing ductwork for to 10 wg positive and negative pressures. Hvac duct construction standards metal and flexible.

This edition improves upon the second edition with expanded pressure class tables. A quick overview of the changes is provided in the front of this manual. This american national standard ansi smacna 006 2006 contains tables and details for constructing ductwork for to 10 wg positive and negative pressures. A comprehensive duct layout indicating.

For all other ducts of any application. Duct over 120 inches.