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.
1 hour rated wood roof assembly.
Descriptions of successfully tested i joist floor as.
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.
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.
No minimum joist size is given except that it needs to be adequate for structural loads.
Concrete with cellular steel 3 hr.
3 4 fr 83 12 x 12 z runners fluorescent type none 2 1 2 concrete.
Wood truss council of america floor or roof fire notes 1.
6 usg fire resistant assemblies test certiļ¬cation 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.
Table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies.
Screw fastened perpendicular to lower chord of wood trusses of 2 x 4 38 mm x 89 mm.
In addition sbca s metal plate connected wood truss handbook is a comprehensive reference book that contains information about.
Ibc table 722 6 2 2 allows 10 minutes for wood floor or roof joists at 16 o c.
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.
For details about rated truss assemblies see sbca research report 1509 01.
There is no tested assembly that matches in all regards.
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.
Wood joists wood i joists floor trusses and flat or pitched roof trusses spaced a maximum 24 o c.
These listings are short summaries to serve as a.
Gypsum wallboard roof ceilings wood framing pitched roof truss 11 1 hr.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project.
Ibc section 722 6 could be used to calculate up to a 1 hour rating for a wood frame wall floor or roof assembly.
One hour roof ceiling assembly.
Assemblies include ducts dampers lighting or other fixtures in the tested assembly.
American softwood lumber standard ps 20.
Urb concealed grid system and tile.
Fire resistance rated truss assemblies.
See full report for details.
