1 Hour Fire Rated Roof Ceiling Assembly

These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

1 hour fire rated roof ceiling assembly. Substrate roof floor ceiling time assembly ff file no. 2 x 8 f d joists 16 o c 1 layer 3 4 bead board ceiling span 17 18 live load 40 lbs. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1.

3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. The building is constructed as per type ii 222 of nfpa 5000 which means that the roof ceiling assemblies have 1 hour fire rating. 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. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. You can use only the specific type size and. 276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.

No ceiling or suspension system product alone constitutes a fire rated assembly. Supply air and return air ducts are installed through the roof and to the roof top units. Several roof top units are located on the roof. 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.

722 6 2 1 fire resistance rating of wood frame assemblies. 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. 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. Concrete with cellular steel 3 hr.

See full report for details. Ul tests rate an entire assembly.