Fire Rated Drywall Ceiling Assembly

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.

Fire rated drywall ceiling assembly.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Selecting the right ul fire rated assembly. Fire tests may be conducted at any one of several recognized facilities. Floor ceiling assemblies ceiling system lighting hvac outlets and other penetrants through the ceiling the plenum structural system subfloor and finish floor.

Urb concealed grid system and tile. Building code requirements. The addition of insulation to any one or two hour fire resistance rated floor ceiling or roof ceiling assembly is permitted provided that one additional layer of gypsum board of the same type specified in the design is added to the ceiling. Determine the existing or planned building elements including structural.

Drywall typically comes in 1 4 inch 3 8 inch and 1 2 inch thicknesses. Type x drywall is 5 8 inches thick. Fire rated wood frame wall and floor ceiling assemblies. Could possibly reduce the fire resistance rating.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. Description 1 1 hr. Finally the gypsum and fiberglass are packed tighter and denser than with regular drywall. Fire safety caution passing a fire test in a controlled laboratory setting and or certifying or labeling a product as having a one hour two hour or any other fire resistance or protection rating and therefore as acceptable for use in certain fire rated assemblies systems does not mean that either a particular assembly system incorporating the product or any given piece of the product.

In addition to the usual gypsum found in regular drywall fire rated drywall contains glass fibers to form a super tough core. Quick selector for fire and sound rated systems gysum wallboard floor ceilings light gauge steel framing no. Tests of building construction and materials is the test standard for determining the fire resistance rating of partitions floor ceiling assemblies roof ceiling assemblies beams and columns. Concrete with cellular steel 3 hr.

Ul l524 two layers 1 2 12 7 mm fire shield c gypsum ga fc 4502 wallboard screw attached perpendicular face layer joints staggered from base layer joints to 7 178 mm. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Establish the hourly rating needed to meet code requirements. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.