Fire resistance assembly rating.
Roof ceiling assemblies.
General the following information is applicable to all fire resistive designs described in this directory.
Concrete with cellular steel 3 hr.
Fire partitions shall extend from the top of the foundation or floor ceiling assembly below to the underside of the floor or roof sheathing slab or deck above or to the fire resistance rated floor ceiling or roof ceiling assembly above and shall be securely attached thereto.
12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.
You can use only the specific type size and.
Channels spaced 12 305 mm o c.
However floor ceiling designs that specify a finish floor are typically not used as roof ceiling assemblies.
6 usg fire resistant assemblies test certiļ¬cation test conditions and fire and sound tested assemblies listed in this selector are based on characteristics properties and performance certificationof materials and systems obtained under controlled test conditions as set forth in the appropriate astm standard in effect at the time of test.
Roof ceiling and floor ceiling construction assemblies which are tested and assigned hourly ratings mandated by building codes or other building safety requirements.
These listings are short summaries to serve as a.
276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr.
Two types of fire rated construction assemblies pertain to acoustical ceiling systems.
When insulation is used or.
Roof ceiling steel framed one layer 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 15 9 mm densarmor plus fireguard c gypsum panels applied at right angles to resilient or rigid furring channels with 1 25 4 mm type s drywall screws 12 305 mm o c.
N beam designs for floor ceiling assemblies p roof ceiling designs s beam designs for roof ceiling assemblies u or v wall and partition designs x or y column designs ii.
Ul tests rate an entire assembly.
Refer to our roof ceiling assembly documents which includes ul fire rated roof assemblies for easy guidance through the assembly of a roof or ceiling on your next project.
Ibc item 4 or item 5 would allow use of assemblies tested as floor ceiling or roof ceiling in the other application even if not specified as such in the listing based upon rational design provided to the building official.
Stud sizes specified in wood or steel stud assemblies are minimums.
No ceiling or suspension system product alone constitutes a fire rated assembly.
These ratings are based on astm standards and compliance is determined by several independent non government testing services such as underwriters laboratories inc.
Urb concealed grid system and tile.
3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.
