1 Hour Fire Rated Wall Thickness

Figure 722 2 1 3 1 shows thicknesses of ceramic fiber blankets to be used to insulate joints between precast concrete wall panels for various panel thicknesses and for joint widths of 3 8 inch 9 5 mm and 1 inch 25 mm for fire resistance ratings of 1 hour to 4 hours.
1 hour fire rated wall thickness. 203 mm limestone aggregate concrete masonry wall with a maximum control joint width of in. Lp flameblock is an icc es evaluated component of 1 and 2 hour fire rated wall assemblies and roof deck applications. Go to work with a building solution that meets building code requirements for fire resistent construction while increasing structural ratings. If the designer wants to exceed those limits then the required rating for the window wall assembly is 60 minutes tested to astm e 119.
When specified for these 1 hour fire rated assemblies lp flameblock sheathing reduces dead load and wall thickness versus common alternatives. Also because it is denser than normal gypsum and paper drywall it takes longer for the fire to degrade it. Where the code permits a fire rated window opening in a 1 hour exterior wall the required fire rating for the window and glazing is 45 minutes with the caveat that there are 25 width and length limits. 13 mm a 1 in.
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. 51 mm thickness can be used in the joints of a 4 hour wall. This assembly is fire rated for 1 hour from the interior side only except when brick is the exterior facing. For example for an 8 in.
It combines flame spread and burn through resistance to give your customers. Most type x drywall has a one hour fire rating. Glass fibers are added to the board to help it retard fire. The thickness of this drywall is 5 8 inch including all layers.
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. Once rockwall panels have been installed according to the specific intertek warnock hersey certification guidelines the assembly provides 1 2 and 3 hours of fire resistance with a 4 5 and 6 core thickness respectively. Rockwall fire rated wall panels consist of a unique rockwool mineral fibre core called conrock with laminated sheet steel permanently bonded to both sides.