Smacna Hvac Duct Construction Standards Table 5 1

Example 4 duct is 140 x 70 inches at negative 2 in.

Smacna hvac duct construction standards table 5 1.

A quick overview of the changes is provided in the front of this manual. For all other ducts of any application. Duct over 120 inches. This american national standard ansi smacna 006 2006 contains tables and details for constructing ductwork for to 10 wg positive and negative pressures.

2 500 pa w g. Figure 2 13 in hvac dcs use standard tables for sizes 120 in. 1966 3 rd edition 2005 396 pages. The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction.

This edition improves upon the second edition with expanded pressure class tables. 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 sizes design airflows pressure class and routing of the duct system. Duct over 120 inches.

A comprehensive duct layout indicating. 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 1. The types of fittings to be used based on the designer s calculations of fitting losses i e square versus 45 entry taps conical versus straight taps etc.

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