Smacna Sheet Metal Gauge Thickness

Flat seam roofs used in low no slope areas or areas subject to flooding or standing water typically made from 20 x 28 sheets relative geometry is important fro expansion and contraction sheet use efficiency and wind load.

Smacna sheet metal gauge thickness. Panel thickness gage pressure class as specified panel width height joint type spacing. Documents preceding 3rd edition hvac dcs. 1 smacna sheet metal and air conditioning contractors national association recommended gages for circular ducts for heating and general ventilation work. 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.

22 gauge for duct size up to 1200 mm 48 thickness 0 8 mm. Minimum metal thickness for flatness. 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. Here are the few gauge system as per smacna standards.

1 inch 25 4 mm. Low and medium velocity duct system. Minimum metal thickness ducts sheet metal gauges engineering toolbox 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. The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.

Howard iii sheet metal and air conditioning contractors national association. Page 2 technical resources bulletin trb 5 09 update of trb 1 08. The final test reports demonstrate that fascia and coping constructed in accordance with the smacna architectural sheet metal manual resists very high pull off forces. Copper or stainless steel is recommended lock and seal all joints solder joints on slopes less than 3 12.

26 gauge is use for the duct size below 300 mm 12 and thickness 0 5 mm. A the sheet metal and air conditioning contractor s national association smacna provides its product for informational purposes. Ansi smacna 006 2006 hvac duct construction standards eli p.