1 Hour Fire Rated Roof Ceiling Assembly

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.

1 hour fire rated roof ceiling assembly. 2 x 8 f d joists 16 o c 1 layer 3 4 bead board ceiling span 17 18 live load 40 lbs. 722 6 2 1 fire resistance rating of wood frame assemblies. Urb concealed grid system and tile. Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Fire rated wood frame wall and floor ceiling assemblies 5 ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251. See full report for details.

Several roof top units are located on the roof. No ceiling or suspension system product alone constitutes a fire rated assembly. This section contains procedures for calculating the fire resistance ratings of walls floor ceiling and roof ceiling assemblies based in part on the standard method of testing referenced in section 703 2. Concrete with cellular steel 3 hr.

Substrate roof floor ceiling time assembly ff file no. The fire resistance rating of a wood frame assembly is equal to the sum of. Supply air and return air ducts are installed through the roof and to the roof top units. The building is constructed as per type ii 222 of nfpa 5000 which means that the roof ceiling assemblies have 1 hour fire rating.

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. Ul tests rate an entire assembly. You can use only the specific type size and. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.