1 Hour Roof Truss Assembly

Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm.

1 hour roof truss assembly.

I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control. Roof slope of 3 12. 1 one hour and two hour rated assemblies that may be used in the roof cavity and that may be constructed with gable end frames. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.

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. Ul p533 roof ceiling one layer 5 8 15 9 mm fire shield c ga rc 2603 wallboard attached to 1 2 12 7 mm resilient furring channel spaced 12 o c. No minimum joist size is given except that it needs to be adequate for structural loads. O c fabricated from nom.

Figure 17 3 2 figure 17 3 2. 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. Fire safety building assembly s the period of time the assembly will serve as a barrier to the spread. In this case a single layer of 1 2 gypsum wallboard is attached to the side of a single roof truss in the location shown to provide the required draftstop and area separation.

Truss depth shall be 5 1 4 with a min. See full report for details. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. With 1 25 mm type s drywall screws 12 305 mm o c.

Engineered joist and truss. Layer 3 trusses. Hr hour ht height insul insulating or insulation int interior lamin. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses.

Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly. I am looking for a 1 hour roof ceiling assembly for wood truss construction. Through base layer perpendicular to. C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and.

Pitched or parallel chord wood trusses spaced 24 max. Figure 17 3 2 shows an alternative roof detail to that in figure 17 3 1 in which the roof trusses are parallel to the wall assembly. 5 8 15 9 mm toughrock fireguard c gypsum board or 5 8 15 9 mm densarmor plus fireguard c gypsum panels applied perpendicular to i shaped wood joists or wood and steel trusses spaced 19 2 488 mm o c. Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c.

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. Is this possible without using channels and what ul number would i use. Wood truss council of america floor or roof fire notes 1. One hour roof ceiling assembly.

2x4 lumber oriented vertically or horizontally.