1 Hour Roof Truss Assembly

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.

1 hour roof truss assembly.

Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c. Resilient channels attached 16 406 mm o c. C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and. See full report for details.

Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. 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. 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 truss council of america floor or roof fire notes 1.

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. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Fire safety building assembly s the period of time the assembly will serve as a barrier to the spread. Hr hour ht height insul insulating or insulation int interior lamin.

Through base layer perpendicular to. Pitched or parallel chord wood trusses spaced 24 max. Figure 17 3 2 figure 17 3 2. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c.

Layer 3 trusses. Engineered joist and truss. Is this possible without using channels and what ul number would i use. 2x4 lumber oriented vertically or horizontally.

Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c. 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. I am looking for a 1 hour roof ceiling assembly for wood truss construction. With 1 25 mm type s drywall screws 12 305 mm o c.

No minimum joist size is given except that it needs to be adequate for structural loads. One hour roof ceiling 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. 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.

O c fabricated from nom. Truss depth shall be 5 1 4 with a min. 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. I would like to apply the drywall directly to the bottom of the truss and also have insulation for sound control.

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