Hvac Duct Construction Standards Pdf

Ductwork design considerations 33.

Hvac duct construction standards pdf. 2 500 pa w g. 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. This is the final session in a three part series. A quick overview of the changes is provided in the front of this manual.

T 25a 31 42 24 56 t d c. The types of fittings to be used based on the designer s calculations of fitting. Duct construction reinforcement 20 9 1 duct sheet metal thickness 20 9 2 duct hanger spacing 21. 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.

For all other ducts of any application. For all ducts between the supply fan and variable volume control boxes and 1 250 pa w g. 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. 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. 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. Webinars hvac duct construction standards 103 round and oval duct hangers and casing construction.

Hvac duct construction standards metal and flexible. A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system. A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system.