1 Hour Rated Roof Assembly

Base layer attached with 1 7 8 48 mm galvanized roofing nails 16 406 mm o c.

1 hour rated roof assembly.

In fact there is no. Report number 1 hour rating category illustration construction 24 oc min 18 depth resilient channel 16 oc 1 layer 5 8 type c gypsum sheathing min 15 32 ul l546 floor or roof with damper duct fixtures insulation and metal trim note 1. 6 usg fire resistant assemblies test certification 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. See full report for details.

Ul does not appear to list an assembly as described. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. No minimum joist size is given except that it needs to be adequate for structural loads. Search for georgia pacific assemblies by selecting an assembly type hourly rating stc rating or product type above or type part of a assembly name.

Face layer attached with 2 3 8. I am looking for a 1 hour roof ceiling assembly for wood truss construction. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. Assemblies include ducts dampers lighting or other fixtures in the tested assembly.

These listings are short summaries to serve as a. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. The addition al layer of gypsum board shall be. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.

Helpful documents and resources for usg s roof assemblies can be found on this page. Is this possible without using channels and what ul number would i use. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.