1 Hr Fire Rated Wall

The american wood council awc and its members have tested a number of wood frame fire rated assem blies.
1 hr fire rated wall. Descriptions of successfully tested lumber wall assemblies are provided in table 1 for one hour rated wall assemblies and table 2 for two hour rated wall assemblies. Elements of buildings the fire resistance rating classifies the ability of an assembly to confine and isolate fire within a zone comprised of fire resistance rated walls ceiling and floor assemblies. Where to install type x drywall. 2009 irc requires walls built within 5 of a property line or within 5 of another building on the same property to have a 1 hour fire resistance rating with fire exposure from the exterior of the building note.
Wall board assemblies consist of wood steel or concrete block framing insulation and gypsum wall board. Using different combinations of board and insulation various system options are available with fire resistances of 30 60 90 or 120 minutes. This assembly is fire rated for 1 hour from both sides. Type x gypsum board is wallboard to which non combustible fibers have been added.
Usg provides resources here for our ul wall assemblies for seamless integration into any construction project. This assembly allows for 2x4 wall construction and is fire rated for 1 hour from both sides. Please refer to white book c04 s11 p02 for more. This intertek listed assembly is commonly used in 1 hour exterior walls along the property line including single family construction.
Gyproc 12 5mm wallboard fixed either side of minimum 63mm x 38mm timber studs at 600mm centres creates a 30 minute fire rated partition to bs476. The ratings relate to fire tests designed to determine how quickly fire can raise the temperature to unacceptable levels. For this reason a fire rated drywall is sometimes called one hour fire wallboard. According to the book commercial drafting and detailing a typical one hour fire rated wall consists of 2x4 studs spaced 16 inches from the center of one stud to the center of the next covered by 5 8 inch type x gypsum board.
Code requirements vary an addendum to the assembly allows for the use of common claddings including smartside fiber cement and t1 11 panels.