1 Hour Rated Roof Assembly Residential

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 residential.

For example shake roofing with a fire retardant treatment rates class b on its own but achieves a class a rating when combined with specified underlying materials such as type 72 roll roofing material. Thick x 4 ft. 1 hour wall assembly interek design no. Assembly rated class a roof coverings are those that meet class a standards when combined with other elements.

2 hour exterior wall assembly ul design no. Assembly rating 1 hr max loading 1684 lbs. 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. 1 hour exterior wall assembly ul design no.

Use flat horizontal soffits see figure 3 instead of attaching the soffits to the sloped joists which creates sloped soffits. Face layer 5 8 in. Rated from one side and from both sides. Long cup head drywall nails 8 in.

Joint tape and compound vinyl or casein dry or premixed joint compound applied to face. Ul does not appear to list an assembly as described. Is this possible without using channels and what ul number would i use. I am looking for a 1 hour roof ceiling assembly for wood truss construction.

A minimum 1 hour fire resistance rating to prevent embers and hot gases from making contact with the joists rafters or trusses or the underside of the roof decking. Type x gypsum wallboard applied vertically fastened with 1 7 8 in. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. 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.

I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control. In fact there is no. With 1 25 mm type s drywall screws 12 305 mm o c. Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.

No minimum joist size is given except that it needs to be adequate for structural loads. Lp flameblock fire rated osb sheathing is a component of the following code compliant fire rated assemblies.