Hvac Duct Construction Standards Pdf

Duct construction reinforcement 20 9 1 duct sheet metal thickness 20 9 2 duct hanger spacing 21.

Hvac duct construction standards pdf.

2 500 pa w g. 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. 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. A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system.

The types of fittings to be used based on the designer s calculations of fitting. A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system. Smacna hvac duct construction standards metal and flexible third edition 2005. Information required for duct construction 1.

Event objectives gain solid understanding of how to construct duct in a resource efficient and sustainable manner that is compliant with smacna s hvac duct construction standard. This is the final session in a three part series. For all other ducts of any application. T 25a 31 42 24 56 t d c.

Most air conditioning and heating systems require some form of duct work to channel or direct the. Duct size duct gauge joint length wide side connector narrow side connector 0 12 26 59 flat slip t 6 24 ga flat drive t 1 24 ga 13 18 26 59 standing slip t 11 26 ga flat drive t 1 24 ga 19 30 26 56 t d c. 10 9 standard duct sizes 32 11 0. Hvac duct construction standards metal and flexible.

For all ducts between the supply fan and variable volume control boxes and 1 250 pa w g. A quick overview of the changes is provided in the front of this manual. Information required for duct construction.