1 Hour Fire Rated Drywall

It also providesbetter substrate for securely fastening exterior facing materials.

1 hour fire rated drywall.

Where to install type x drywall. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Type x gypsum board is wallboard to which non combustible fibers have been added.

And it s not just thickness that makes the difference. If a conventional 1 2 inch thick sheet of drywall will stand up to 30 minutes of fire then the added 1 8 inch found in the type x drywall along with its other properties will double your margin of safety to 60 minutes. This assembly is fire rated for 1 hour from the interior side only except when brick is the exterior facing. Urb concealed grid system and tile.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Has a minimum fire rating for the assembly of 1 hour which is a typical requirement for many building codes. For this reason a fire rated drywall is sometimes called one hour fire wallboard. Gypsum panel end joints located midway between continuous channels and attached to additional pieces of channels 54 1372 mm long with screws 12 305 mm o c.

The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. Type x fire rated gypsum drywall that is 5 8 inch 15 9mm thick and installed on each side of nominal 2 inch x 4 inch 38x89mm wood studs spaced 16 inch 400mm o c. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. Concrete with cellular steel 3 hr.

With 1 25 mm type s drywall screws 12 305 mm o c. When specified for these 1 hour fire rated assemblies lp flameblock sheathing reduces dead load and wall thickness versus common alternatives. 1 2 12 7 mm toughrock fireguard c or 1 2 12 7 mm densarmor plus fireguard c gypsum panel applied perpendicular to resilient channels 24 610 mm o c. According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board.

The 5 8 inch fire code drywall called type x increases a wall s fire rating to a minimum of 1 hour from the 30 minute rating for standard inch drywall. 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. Type x has a denser core and contains glass fibers that keep it from crumbling in the heat.