1 Hour Roof Assembly Ga

19th edition ga 600 2009 ga 600 2009 fire resistance design manual y p s m a s o c i a t i o n g u s j u e 2 0 9 n 0 fire resistance design manual sound control gypsum association.

1 hour roof assembly ga. 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. No minimum joist size is given except that it needs to be adequate for structural loads. Two layers 5 8 15 9 mm densglass fireguard sheathing applied vertically to min. Keep in mind that most of the wood truss fire rated assemblies call for a minimum depth of 12 in.

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. Helpful documents and resources for usg s roof assemblies can be found on this page. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 3 1 2 89 mm corrosion resistant 20 gauge 30 mils steel studs 24 610 mm o c.

Do the plans call for a 1 hour assembly or a 2 hour assembly. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. If trusses are specified then these assemblies can be used to achieve the desired fire rating as long as all the details of the assembly requirements are met. Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.

Base layer attached with 1 25 mm type s 12 corrosion resistant bugle head screws 8 203 mm o c. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. 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.