1 Hour Fire Rated Wall Metal Building

The wall ratings are applicable with 1 hour rated gypsum board and steel stud wall assembly in any u400 or v400 series design.

1 hour fire rated wall metal building.

Sagan ul w447 is a result of applying previous testing for an exterior wall assembly to a new interior wall assembly. Depending on the construction and thickness of the wall a brick wall can achieve a 1 hour to 4 hour fire resistance rating. Install 5 8 inch type c drywall on the interior surface and 1 2 inch gypsum sheathing on the exterior. Panel is tested by blasting with a flame for one hour followed by a blasting from a fire hose.

According to the engineered wood association a one hour rating indicates that a wall constructed in a manner similar to the one tested will contain flames and high temperatures and support its full load for at least one hour after the fire begins. It can be covered with the sheeting of your choice. This bulletin was previously released as insurance bulletin 16. Fire resistance ratings are expressed in the number of minutes or hours a structure can withstand a fire simulation test.

The new fire resistance rated non load bearing metal building interior wall assembly will be acceptable where one or two hour ratings are required by building codes. U489 bearing wall rating 1 1 and 2 hr. Build a two hour exterior wall with steel studs rather than wood and special metal stud fiberglass insulation between the studs. Finish the wall with a 1 inch coat of portland cement gypsum plaster.

Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Fire 1 hour rated walls are designed to match all standard awip facing panels and finishes so you won t have. Fire 1 hour rated exterior wall and interior partition panels are factory assembled from a unique combination of tried and true cladding components resulting in a building composite that delivers superior performance in all categories compared with mineral wool core sandwich panels.

The testing demonstrated that the fire will not travel to the wall s unexposed side via the vapor barrier. As with the fire rated columns mbma considers this a breakthrough in fire protection research of great importance to the designers and users of eco nomical light steel frame buildings. The roof insulation is continuously draped over the top of the wall. The wall must then remain intact.

Continued on next page note.