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.

Smacna hvac duct construction standards table 5 1.

2 500 pa w g. Information required for duct construction 1. Information required for duct construction. The third edition of the hvac duct construction standards metal and flexible is intended primarily for commercial and institutional duct construction.

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 american national standard ansi smacna 006 2006 contains tables and details for constructing ductwork for to 10 wg positive and negative pressures. This edition improves upon the second edition with expanded pressure class tables.

1966 3 rd edition 2005 396 pages. A comprehensive duct layout indicating. A quick overview of the changes is provided in the front of this manual. Duct over 120 inches.

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

For all other ducts of any application. Figure 2 13 in hvac dcs use standard tables for sizes 120 in.