1 Hour Rated Roof Assembly

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

1 hour rated roof assembly.

Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. These listings are short summaries to serve as a. With 1 2 wood structural panels with exterior glue applied at right angles to top of joist or top chord of trusses with 8d nails. Assemblies include ducts dampers lighting or other fixtures in the tested assembly.

Gypsum panel end joints located midway between continuous channels and attached to additional pieces of channels 54 1372 mm long with screws 12 305 mm o c. See full report for details. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. I am looking for a 1 hour roof ceiling assembly for wood truss construction.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Ul does not appear to list an assembly as described. Urb concealed grid system and tile. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly.

2 hour exterior wall assembly ul design no. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies. In fact there is no. Is this possible without using channels and what ul number would i use.

American softwood lumber standard ps 20. Assemblies are provided in. Generic fire rated assembly listing construction elements 1 5 hr rating 1 hour notes 1. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 1 2 12 7 mm toughrock fireguard c or 1 2 12 7 mm densarmor plus fireguard c gypsum panel applied perpendicular to resilient channels 24 610 mm o c. Concrete with cellular steel 3 hr. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.

No minimum joist size is given except that it needs to be adequate for structural loads. Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with the.

12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.