2 Hour Roof Truss Assembly

Roof slope of 3 12.

2 hour roof truss assembly.

Shaft wall limiting heights spans. Layer 3 trusses. O c fabricated from nom. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm.

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. 2 hour fire endurance assembly for mpcwt structural floor and roof framing systems educational overview revised 10 2 2017. Find usg product specific cad and revit files.

Pitched or parallel chord wood trusses spaced 24 max. 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. Sbca endeavors to expand component manufacturers.

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. 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. 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. 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. A two hour assembly has been calculated and a copy of the report is available from sbca sbca srr 1509 02. Truss depth shall be 5 1 4 with a min. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.

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. 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.