Sheet Metal Smacna Duct Gauge Chart

Tdc duct constructed per smacna standards first edition 1995 2.

Sheet metal smacna duct gauge chart.

This second edition of the smacna commercial metal and flexible duct construction standards is another in a long line dating from the 1950s. Duct velocity calculate velocities in circular and rectangular ducts imperial and si units online calculator. 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.

The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material. A quick overview of the changes is provided in the front of this manual. Here are the few gauge system as per smacna standards. Check with factory for availability of 72 in 26 gauge galvanized note.

Smacna testing and research institute verified that sheet metal connectors inc. May 5th 2018 sheet metal gauges used in ductwork sheet metal gauge sheet thickness inches welded ductwork 0 smacna 1 ductwork 16 0 0625 17 0 0560 18 hvac duct construction standards public resource org may 6th 2018 each size in a pressure class has a minimum duct wall thickness and a minimum the basis of compliance with the smacna hvac. Shop standards comply with the 2005 3rd edition of the smacna hvac duct construction standards. Howard iii sheet metal and air conditioning contractors national association.

Ansi smacna 006 2006 hvac duct construction standards eli p. 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. Duct fabricated using pittsburg seams.

Low and medium velocity duct system. Located in headquarters outside washington d c the sheet metal and air conditioning contractors national association smacna an international association of union contractors has 1 834 members in 103 chapters throughout the united states canada australia and brazil. Replaced in a 1900 renovation. Metric conversion chart a 6 duct surface area in square feet per lineal foot.

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. Is proud to be a member or affiliated with the following. Documents preceding 3rd edition hvac dcs hvac duct construction standards metal and flexible. Ductwork support ductwork support and recommended.

26 gauge is use for the duct size below 300 mm 12 and thickness 0 5 mm. 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.