2 Hour Roof Truss Assembly

Pitched or parallel chord wood trusses spaced 24 max.

2 hour roof truss assembly. 1 5 hours nominal 2x3 24 oc min 10 depth truswal truss plates trusgard protective channels applied to bottom chord of each truss fire rated suspended ceiling min 7 1 2 below the truss sheathing min 3 4 nominal 2x3 24 oc min 10 depth truswal truss plates fire rated suspended ceiling min 7 1 2 below the truss sheathing min 3 4 fr. Helpful documents and resources for usg s roof assemblies can be found on this page. Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04. Fire rated cold formed steel truss assemblies to properly design a building for fire safety building designers must recognize and accurately follow building fire code regulations.

Shaft wall limiting heights spans. Our cad and revit library of design drawings of wall intersections joints and other construction details. Find usg product specific cad and revit files. Sound tested with 2 x 4 stud wall with 1 2 12 7 mm toughrock fireguard c gypsum wallboard or densarmor plus fireguard c panels each side of assembly and 3 1 2 89 mm fiberglass insulation in stud space both sides.

One basis for this type of analysis is harmathy s ten rules of fire endurance rating written in 1965. 2 hour fire endurance assembly for mpcwt structural floor and roof framing systems educational overview revised 10 2 2017. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. A two hour assembly has been calculated and a copy of the report is available from sbca sbca srr 1509 02.

2x4 lumber oriented vertically or horizontally. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. Truss depth shall be 5 1 4 with a min. Achieving a 2 hour floor ceiling assembly from the underside only home articles achieving a 2 hour floor ceiling assembly from the underside only one of our current projects is a change of occupancy where the change will require a 2 hour rating between the main level a 2 occupancy and the r 2 occupancy above.

Sbca endeavors to expand component manufacturers. Roof slope of 3 12. And technical information disseminating industry news and facilitating networking opportunities for manufacturers of roof trusses wall panels and floor trusses. Layer 3 trusses.

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. O c fabricated from nom.