Check with factory for availability of 72 in 26 gauge galvanized note.
Sheet metal smacna duct gauge chart.
Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator.
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A quick overview of the changes is provided in the front of this manual.
Tdc duct constructed per smacna standards first edition 1995 2.
Howard iii sheet metal and air conditioning contractors national association.
Ansi smacna 006 2006 hvac duct construction standards eli p.
Documents preceding 3rd edition hvac dcs hvac duct construction standards metal and flexible.
All duct stiffened by machine formed beads spaced at 12 o c.
Ventilation systems for ventilation and air handling air change rates ducts and pressure drops charts and diagrams and more.
Shop standards comply with the 2005 3rd edition of the smacna hvac duct construction standards.
Sheet metal standards duct guage and enforcing for 1 ess drive gauge of metal duct dimensions 5 joint 4 joint 2 5 joint 2 joint joint construction.
Sheet metal connectors inc.
26 gauge is use for the duct size below 300 mm 12 and thickness 0 5 mm.
Duct fabricated using pittsburg seams.
Sheet metal and air conditioning contractors.
Ansi smacna 006 2006 hvac duct construction standards metal and flexible sheet metal and air conditioning contractors national association inc.
The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.
Sheet metal gauge size chart gauge or gage sizes are numbers that indicate the thickness of a piece of sheet metal with a higher number referring to a thinner sheet.
Here are the few gauge system as per smacna standards.
Low and medium velocity duct system.
As per smacna the gauges of ducting sheet varies and depends upon the width of the duct and type of application of a particular project.
Smacna testing and research institute verified that sheet metal connectors inc.
Ductwork seal classes ductwork prone to air leakages.
Replaced in a 1900 renovation.
Metric conversion chart a 6 duct surface area in square feet per lineal foot.
This second edition of the smacna commercial metal and flexible duct construction standards is another in a long line dating from the 1950s.
