2 Hour Roof Truss Assembly

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.

2 hour roof truss assembly.

Our cad and revit library of design drawings of wall intersections joints and other construction details. One basis for this type of analysis is harmathy s ten rules of fire endurance rating written in 1965. Building codes may require construction assemblies to have a fire resistance rating such as 1 hour 1 hour and 2 hour in specific construction types and occupancies. Truss depth shall be 5 1 4 with a min.

Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. Roof slope of 3 12. 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. 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.

Shaft wall limiting heights spans. Pitched or parallel chord wood trusses spaced 24 max. A two hour assembly has been calculated and a copy of the report is available from sbca sbca srr 1509 02. Find usg product specific cad and revit files.

2x4 lumber oriented vertically or horizontally. Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. O c fabricated from nom.

Sbca endeavors to expand component manufacturers. Layer 3 trusses. All new fire rated roof ceiling assembly files. Helpful documents and resources for usg s roof assemblies can be found on this page.

Refer to our roof ceiling assembly documents which includes ul fire rated roof assemblies for easy guidance through the assembly of a roof or ceiling on your next project. 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.