Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly.
1 hour rated roof assembly.
Face layer attached with 2 3 8.
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.
See full report for details.
The addition al layer of gypsum board shall be.
Helpful documents and resources for usg s roof assemblies can be found on this page.
Assemblies include ducts dampers lighting or other fixtures in the tested assembly.
Ul does not appear to list an assembly as described.
Ther batt or loose fill to any 1 or 2 hour fire resistance rated floor ceil ing or roof ceiling system having a cavity deep enough to accept the in sulation is permitted provided that one additional layer of either 1 2 inch or 5 8 inch type x gypsum board is applied to the ceiling.
In fact there is no.
Base layer attached with 1 7 8 48 mm galvanized roofing nails 16 406 mm o c.
Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.
Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.
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.
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.
Is this possible without using channels and what ul number would i use.
I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.
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.
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.