1 Hour Rated Corridor Ceiling Assembly

Cr 201 2 hour corridor assembly.

1 hour rated corridor ceiling assembly. These designs are identified in the ul fire resistance directory which is updated yearly and. 2 1 3 4 2. Cad drawings search for cad details for your project needs. Second the purpose of a fire rated ceiling is to keep a fire in the building areas from encroaching on the corridor.

The double layer gwb assembly gypsum association rc 2601. Steel stud partitions with framing 16 o c. Fr 83 2 x 2 dxlf fluorescent type 113 sq. Penetrations through rated wall and floor assemblies.

Cr 102 1 hour corridor assembly. The system must be tested and approved in the orientation of final use. Sheathing 5 8 in. Fl edge 2 x 2 24.

Gr 1 ilt edge dxlta dxltza 2 x 4 24 8 bar joists 24 o c. Cr 103 1 hour corridor assembly. Cr 203 2 hour corridor assembly. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels.

Type x gypsum wallboard 4 ft. Ul floor ceiling assemblies are tested for the entire floor ceiling and as i understand are to be continued to all exterior walls not just across a corridor or room that has rated enclosing walls. O c double top plates single bottom plate. Although the code allows you to rate a floor ceiling assembly from one rated corridor wall to the other rated wall across the span of the corridor i do not endorse such a practice with ul floor.

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. The old ubc used to allow the corridor ceiling to be constructed of materials approved for fire resistive wall assembly. I don t find any reference to that allowance in the ibc but the ibc commentary says that an alternative for the ceiling of the exit passageway could be a top shaft enclosure see section 707 12. Horizontal joints are unblocked.

To confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. Rated steel column assemblies. Cr 204 2 hour corridor assembly. The image below from ibc code commentary figure 708 4 2 b illustrates this exception option.

The membrane on the corridor side of the wall is carried up to the underside of the corridor ceilings provided the corridor ceiling is constructed of materials that have been tested as part of a 1 hour assembly. Rated steel beam assemblies. First of all a wall assembly on its side as a ceiling assembly negates its testing and approval. Astro fr incandescent type 6 1 2 diam.

Fire rated assemblies are tested and certified in their entirety. Fire sound selector. Framing nominal 2x4 wood studs spaced 16 in. 8 bar joists 24 o c.