26 Gauge Sheet Metal Fire Rating

The equivalent thicknesses differ for each gauge size standard which were developed based on the weight of the sheet for a given material.

26 gauge sheet metal fire rating. The mbma fire tests of exterior walls in 1997 resulted in a new uldesign no. Most metal panel manufacturers have tested their roof assemblies and most if not all metal panels and shingles can be used in class a fire rated roof systems. The sheet metal and air. On average wood structural members or framing rank third as the first ignited material in home fires according to the national fire protection association.

The nonfire side of a fire rated assembly exceeds 325 degrees above its ambient temperature. But when it is used one on each side of a properly framed wall it can become a fire rated wall. To give a perspective on steel thickness differences from 29 gauge to 26 gauge the difference in thickness is 0045 of an inch. I am not aware of a fire rated wall assembly using sheet metal.

1 restrained beam rating based on the period of fire exposure where the beam sustains the applied design load but not more than twice the corresponding unrestrained beam rating and provided the later is 1 hour or. Fire ratings are based on an assembly. Pole buildings are normally produced with a thinner roof and wall panel consisting of 29 gauge steel. This specially designed fire resistant wall panel is composed of 5 8 fire shield gypsum board with a mineral wool insulated core and held in place with 26 gauge galvanized steel studs.

The code requirements for fire resistance of metal panels are logical and not overly burdensome. 20 gauge steel channel is used to secure the wall panels and an optional steel skin may cover encase both sides of the panel. The ratings are for unsymmetrical walls that require ratings from both sides. Steel is a non combustible fire resistant material and will not feed a fire.

V421 which pro vides 1 and 2 hour fire resistance ratings for exteri or walls in metal buildings. A specific field erected construction of an assemblage of materials designed to prevent the spread of fire through openings. Sheet metal penetrations are used in rated assemblies and when correctly fire caulked. All hansen steel buildings offer 26 gauge roof and wall panels with strength of 80 000 psi.

Building with fire safety in mind. Support spacing for 22 gauge 1 1 2 inch or 3 inch fluted steel deck. Fire resistance steel framing won t feed a fire fast facts. For 1 hour restrained assembly rating.

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. The thickness and number of the layers of type x gypsum wallboard are specified for each.