A comprehensive duct layout indicating sizes design airflows pressure class and routing of the duct system.
Smacna standards for duct supports pdf.
For all ducts between the supply fan and variable volume control boxes and 1 250 pa w g.
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.
Download view smacna hangers and supports as pdf for free.
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 losses i e square versus 45 entry taps conical versus straight taps etc.
Smacna hangers and supports october 2019 183.
The 1980 edition of these standards was the first publication dealing with the selection of duct gauge and reinforcement for rectangular industrial duct systems.
A quick overview of the changes is provided in the front of this manual.
Hvac duct construction standards metal and flexible.
These duct construction standards are intended for use by contractors fabricators and designers of air pollution control pneumatic conveyance and industrial ventilation systems.
Information required for duct construction.
2 500 pa w g.
Information required for duct construction 1.