1 Hour Roof Truss Assembly

Maximum with 1 5 8 41 mm type s drywall screws 8 203 mm o c.

1 hour roof truss assembly.

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. Resilient channels attached 16 406 mm o c. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Engineered joist and truss.

With 1 25 mm type s drywall screws 12 305 mm o c. Roof slope of 3 12. See full report for details. 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.

C roof ceilings45 51 steel framed including steel bar joist framing steel c joist framing steel truss and. Ibctable 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. One hour roof ceiling assembly. 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.

Figure 17 3 2 figure 17 3 2. O c fabricated from nom. Layer 3 trusses. 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.

Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. No minimum joist size is given except that it needs to be adequate for structural loads. 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. Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c.

Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. Fire safety building assembly s the period of time the assembly will serve as a barrier to the spread. Truss depth shall be 5 1 4 with a min. 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.

Hr hour ht height insul insulating or insulation int interior lamin. 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.

Pitched or parallel chord wood trusses spaced 24 max. Is this possible without using channels and what ul number would i use. 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. 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.