1 Hour Roof Assembly

Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.

1 hour roof assembly.

1 hour rating category illustration wh tsc fca 60 08 floor or roof suspended ceiling fixtures note 1 24 oc min 12 depth steel runner system dropped 7 1 2 1 layer 5 8 type c gypsum sheathing min 23 32 wh tsc fca 60 04 ul l529 floor or roof with insulation wh tsc fca 90 02 calculated assembly report available ul l556 showing. Framing nominal 2x4 wood studs spaced 16 in. C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and steel roof deck. 2 1 3 4 2.

Fc4 fc9 1 hour wood rafter floor assembly. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr. Urb concealed grid system and tile. In fact there is no.

Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. As the global safety science leader ul helps companies to demonstrate safety enhance sustainability strengthen security deliver quality manage risk and achieve regulatory compliance. Fw1 fw2 fw3 fw4 fw5 fw6 fw7 fw8 fw9 fw12 2 hour wood rafter floor assembly. Concrete with cellular steel 3 hr.

O c double top plates. I am looking for a 1 hour roof ceiling assembly for wood truss construction. 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. Wood framed including dimensional lumber engineered joist and truss.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. Helpful documents and resources for usg s roof assemblies can be found on this page. Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04.

No minimum joist size is given except that it needs to be adequate for structural loads. Ul does not appear to list an assembly as described. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control. Lumber shall be identified by the grade.

Ws4 1 1 one hour fire resistive wood frame wall assembly 2x4 wood stud wall 100 design load astm e 119 nfpa 251. Wood and gypsum floor ceiling and wood roof assemblies 1 hour floor ceiling assembly. Fc1 fc2 fc3 fc6 fc7 fc8 2 hour floor ceiling assembly. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c gypsum wallboard or densarmor plus fireguard c panels each side of assembly and 3 1 2 89 mm fiberglass insulation in stud space both sides.