Layer 3 trusses.
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.
Our cad and revit library of design drawings of wall intersections joints and other construction details.
A two hour assembly has been calculated and a copy of the report is available from sbca sbca srr 1509 02.
Helpful documents and resources for usg s roof assemblies can be found on this page.
Find usg product specific cad and revit files.
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.
And technical information disseminating industry news and facilitating networking opportunities for manufacturers of roof trusses wall panels and floor trusses.
2 hour fire endurance assembly for mpcwt structural floor and roof framing systems educational overview revised 10 2 2017.
Sbca endeavors to expand component manufacturers.
Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm.
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.
Breakaway clip facings and height of wall differ between ul design u373 and whi gp wa 120 04.
2x4 lumber oriented vertically or horizontally.
O c fabricated from nom.
Truss depth shall be 5 1 4 with a min.
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.
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.
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.
Roof slope of 3 12.
Shaft wall limiting heights spans.
One basis for this type of analysis is harmathy s ten rules of fire endurance rating written in 1965.
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.
