1 Hour Rated Wood Roof Assembly

Fire resistance rated truss assemblies.

1 hour rated wood roof assembly.

With 1 2 wood structural panels with. Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof 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. American softwood lumber standard ps 20.

Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c. Lumber shall be identified by the grade mark of a lumber grading or inspection agency that has been approved by an accreditation body that complies with the. 3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete. Concrete with cellular steel 3 hr.

276 fire rated ceiling assemblies suspension ceiling designs floor ceiling designs a003 3 hr. Urb concealed grid system and tile. Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm. 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.

Wood joists supporting 1 25 4 mm nominal wood subfloor and 1 25 4 mm nominal wood finish floor or 19 32 15 1 mm plywood finished floor with long edges t g and 15 32 11 9 mm interior plywood with exterior glue subfloor perpendicular to joist with joints staggered. Wood truss council of america floor or roof fire notes 1. Assemblies include ducts dampers lighting or other fixtures in the tested assembly. Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.

Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. In addition sbca s metal plate connected wood truss handbook is a comprehensive reference book that contains information about. These wall assembly files are used for planning and estimation purposes for many ul wall types such as fire rated wall assemblies. These listings are short summaries to serve as a.

For details about rated truss assemblies see sbca research report 1509 01. Descriptions of successfully tested i joist floor as. There is no tested assembly that matches in all regards. 12 x 24 2 x 4 8 w10 x 25 beam floor units and beam support 3 hr.

Ibc table 721 3 item 21 1 1 describes a single prescriptive 1 hour rated floor or roof assembly that includes wood trusses. See full report for details. Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr. 6 usg fire resistant assemblies test certification test conditions and fire and sound tested assemblies listed in this selector are based on characteristics properties and performance certificationof materials and systems obtained under controlled test conditions as set forth in the appropriate astm standard in effect at the time of test.